# 1 "src/btree.c"
# 1 "<built-in>"
# 1 "<command-line>"
# 1 "src/btree.c"
# 16 "src/btree.c"
# 1 "src/btreeInt.h" 1
# 216 "src/btreeInt.h"
# 1 "src/sqliteInt.h" 1
# 59 "src/sqliteInt.h"
# 1 "src/msvc.h" 1
# 60 "src/sqliteInt.h" 2


# 1 "src/vxworks.h" 1
# 65 "src/sqliteInt.h" 2
# 167 "src/sqliteInt.h"
# 1 "./sqlite3.h" 1
# 35 "./sqlite3.h"
# 1 "/usr/local/google/home/eliben/eli/pycparser/utils/fake_libc_include/stdarg.h" 1
# 1 "/usr/local/google/home/eliben/eli/pycparser/utils/fake_libc_include/_fake_defines.h" 1
# 2 "/usr/local/google/home/eliben/eli/pycparser/utils/fake_libc_include/stdarg.h" 2
# 1 "/usr/local/google/home/eliben/eli/pycparser/utils/fake_libc_include/_fake_typedefs.h" 1


typedef int size_t;
typedef int __builtin_va_list;
typedef int __gnuc_va_list;
typedef int va_list;
typedef int __int8_t;
typedef int __uint8_t;
typedef int __int16_t;
typedef int __uint16_t;
typedef int __int_least16_t;
typedef int __uint_least16_t;
typedef int __int32_t;
typedef int __uint32_t;
typedef int __int64_t;
typedef int __uint64_t;
typedef int __int_least32_t;
typedef int __uint_least32_t;
typedef int __s8;
typedef int __u8;
typedef int __s16;
typedef int __u16;
typedef int __s32;
typedef int __u32;
typedef int __s64;
typedef int __u64;
typedef int _LOCK_T;
typedef int _LOCK_RECURSIVE_T;
typedef int _off_t;
typedef int __dev_t;
typedef int __uid_t;
typedef int __gid_t;
typedef int _off64_t;
typedef int _fpos_t;
typedef int _ssize_t;
typedef int wint_t;
typedef int _mbstate_t;
typedef int _flock_t;
typedef int _iconv_t;
typedef int __ULong;
typedef int __FILE;
typedef int ptrdiff_t;
typedef int wchar_t;
typedef int __off_t;
typedef int __pid_t;
typedef int __loff_t;
typedef int u_char;
typedef int u_short;
typedef int u_int;
typedef int u_long;
typedef int ushort;
typedef int uint;
typedef int clock_t;
typedef int time_t;
typedef int daddr_t;
typedef int caddr_t;
typedef int ino_t;
typedef int off_t;
typedef int dev_t;
typedef int uid_t;
typedef int gid_t;
typedef int pid_t;
typedef int key_t;
typedef int ssize_t;
typedef int mode_t;
typedef int nlink_t;
typedef int fd_mask;
typedef int _types_fd_set;
typedef int clockid_t;
typedef int timer_t;
typedef int useconds_t;
typedef int suseconds_t;
typedef int FILE;
typedef int fpos_t;
typedef int cookie_read_function_t;
typedef int cookie_write_function_t;
typedef int cookie_seek_function_t;
typedef int cookie_close_function_t;
typedef int cookie_io_functions_t;
typedef int div_t;
typedef int ldiv_t;
typedef int lldiv_t;
typedef int sigset_t;
typedef int __sigset_t;
typedef int _sig_func_ptr;
typedef int sig_atomic_t;
typedef int __tzrule_type;
typedef int __tzinfo_type;
typedef int mbstate_t;
typedef int sem_t;
typedef int pthread_t;
typedef int pthread_attr_t;
typedef int pthread_mutex_t;
typedef int pthread_mutexattr_t;
typedef int pthread_cond_t;
typedef int pthread_condattr_t;
typedef int pthread_key_t;
typedef int pthread_once_t;
typedef int pthread_rwlock_t;
typedef int pthread_rwlockattr_t;
typedef int pthread_spinlock_t;
typedef int pthread_barrier_t;
typedef int pthread_barrierattr_t;
typedef int jmp_buf;
typedef int rlim_t;
typedef int sa_family_t;
typedef int sigjmp_buf;
typedef int stack_t;
typedef int siginfo_t;
typedef int z_stream;


typedef int int8_t;
typedef int uint8_t;
typedef int int16_t;
typedef int uint16_t;
typedef int int32_t;
typedef int uint32_t;
typedef int int64_t;
typedef int uint64_t;


typedef int int_least8_t;
typedef int uint_least8_t;
typedef int int_least16_t;
typedef int uint_least16_t;
typedef int int_least32_t;
typedef int uint_least32_t;
typedef int int_least64_t;
typedef int uint_least64_t;


typedef int int_fast8_t;
typedef int uint_fast8_t;
typedef int int_fast16_t;
typedef int uint_fast16_t;
typedef int int_fast32_t;
typedef int uint_fast32_t;
typedef int int_fast64_t;
typedef int uint_fast64_t;


typedef int intptr_t;
typedef int uintptr_t;


typedef int intmax_t;
typedef int uintmax_t;


typedef _Bool bool;


typedef void* MirEGLNativeWindowType;
typedef void* MirEGLNativeDisplayType;
typedef struct MirConnection MirConnection;
typedef struct MirSurface MirSurface;
typedef struct MirSurfaceSpec MirSurfaceSpec;
typedef struct MirScreencast MirScreencast;
typedef struct MirPromptSession MirPromptSession;
typedef struct MirBufferStream MirBufferStream;
typedef struct MirPersistentId MirPersistentId;
typedef struct MirBlob MirBlob;
typedef struct MirDisplayConfig MirDisplayConfig;


typedef struct xcb_connection_t xcb_connection_t;
typedef uint32_t xcb_window_t;
typedef uint32_t xcb_visualid_t;
# 2 "/usr/local/google/home/eliben/eli/pycparser/utils/fake_libc_include/stdarg.h" 2
# 36 "./sqlite3.h" 2
# 162 "./sqlite3.h"
 extern const char sqlite3_version[];
 const char *sqlite3_libversion(void);
 const char *sqlite3_sourceid(void);
 int sqlite3_libversion_number(void);
# 190 "./sqlite3.h"
 int sqlite3_compileoption_used(const char *zOptName);
 const char *sqlite3_compileoption_get(int N);
# 233 "./sqlite3.h"
 int sqlite3_threadsafe(void);
# 249 "./sqlite3.h"
typedef struct sqlite3 sqlite3;
# 278 "./sqlite3.h"
  typedef long long int sqlite_int64;
  typedef unsigned long long int sqlite_uint64;

typedef sqlite_int64 sqlite3_int64;
typedef sqlite_uint64 sqlite3_uint64;
# 334 "./sqlite3.h"
 int sqlite3_close(sqlite3*);
 int sqlite3_close_v2(sqlite3*);


typedef int (*sqlite3_callback)(void*,int,char**, char**);
# 406 "./sqlite3.h"
 int sqlite3_exec(
  sqlite3*,
  const char *sql,
  int (*callback)(void*,int,char**,char**),
  void *,
  char **errmsg
);
# 677 "./sqlite3.h"
typedef struct sqlite3_file sqlite3_file;
struct sqlite3_file {
  const struct sqlite3_io_methods *pMethods;
};
# 776 "./sqlite3.h"
typedef struct sqlite3_io_methods sqlite3_io_methods;
struct sqlite3_io_methods {
  int iVersion;
  int (*xClose)(sqlite3_file*);
  int (*xRead)(sqlite3_file*, void*, int iAmt, sqlite3_int64 iOfst);
  int (*xWrite)(sqlite3_file*, const void*, int iAmt, sqlite3_int64 iOfst);
  int (*xTruncate)(sqlite3_file*, sqlite3_int64 size);
  int (*xSync)(sqlite3_file*, int flags);
  int (*xFileSize)(sqlite3_file*, sqlite3_int64 *pSize);
  int (*xLock)(sqlite3_file*, int);
  int (*xUnlock)(sqlite3_file*, int);
  int (*xCheckReservedLock)(sqlite3_file*, int *pResOut);
  int (*xFileControl)(sqlite3_file*, int op, void *pArg);
  int (*xSectorSize)(sqlite3_file*);
  int (*xDeviceCharacteristics)(sqlite3_file*);

  int (*xShmMap)(sqlite3_file*, int iPg, int pgsz, int, void volatile**);
  int (*xShmLock)(sqlite3_file*, int offset, int n, int flags);
  void (*xShmBarrier)(sqlite3_file*);
  int (*xShmUnmap)(sqlite3_file*, int deleteFlag);

  int (*xFetch)(sqlite3_file*, sqlite3_int64 iOfst, int iAmt, void **pp);
  int (*xUnfetch)(sqlite3_file*, sqlite3_int64 iOfst, void *p);


};
# 1164 "./sqlite3.h"
typedef struct sqlite3_mutex sqlite3_mutex;
# 1174 "./sqlite3.h"
typedef struct sqlite3_api_routines sqlite3_api_routines;
# 1345 "./sqlite3.h"
typedef struct sqlite3_vfs sqlite3_vfs;
typedef void (*sqlite3_syscall_ptr)(void);
struct sqlite3_vfs {
  int iVersion;
  int szOsFile;
  int mxPathname;
  sqlite3_vfs *pNext;
  const char *zName;
  void *pAppData;
  int (*xOpen)(sqlite3_vfs*, const char *zName, sqlite3_file*,
               int flags, int *pOutFlags);
  int (*xDelete)(sqlite3_vfs*, const char *zName, int syncDir);
  int (*xAccess)(sqlite3_vfs*, const char *zName, int flags, int *pResOut);
  int (*xFullPathname)(sqlite3_vfs*, const char *zName, int nOut, char *zOut);
  void *(*xDlOpen)(sqlite3_vfs*, const char *zFilename);
  void (*xDlError)(sqlite3_vfs*, int nByte, char *zErrMsg);
  void (*(*xDlSym)(sqlite3_vfs*,void*, const char *zSymbol))(void);
  void (*xDlClose)(sqlite3_vfs*, void*);
  int (*xRandomness)(sqlite3_vfs*, int nByte, char *zOut);
  int (*xSleep)(sqlite3_vfs*, int microseconds);
  int (*xCurrentTime)(sqlite3_vfs*, double*);
  int (*xGetLastError)(sqlite3_vfs*, int, char *);


  int (*xCurrentTimeInt64)(sqlite3_vfs*, sqlite3_int64*);


  int (*xSetSystemCall)(sqlite3_vfs*, const char *zName, sqlite3_syscall_ptr);
  sqlite3_syscall_ptr (*xGetSystemCall)(sqlite3_vfs*, const char *zName);
  const char *(*xNextSystemCall)(sqlite3_vfs*, const char *zName);


};
# 1523 "./sqlite3.h"
 int sqlite3_initialize(void);
 int sqlite3_shutdown(void);
 int sqlite3_os_init(void);
 int sqlite3_os_end(void);
# 1559 "./sqlite3.h"
 int sqlite3_config(int, ...);
# 1578 "./sqlite3.h"
 int sqlite3_db_config(sqlite3*, int op, ...);
# 1643 "./sqlite3.h"
typedef struct sqlite3_mem_methods sqlite3_mem_methods;
struct sqlite3_mem_methods {
  void *(*xMalloc)(int);
  void (*xFree)(void*);
  void *(*xRealloc)(void*,int);
  int (*xSize)(void*);
  int (*xRoundup)(int);
  int (*xInit)(void*);
  void (*xShutdown)(void*);
  void *pAppData;
};
# 2278 "./sqlite3.h"
 int sqlite3_extended_result_codes(sqlite3*, int onoff);
# 2340 "./sqlite3.h"
 sqlite3_int64 sqlite3_last_insert_rowid(sqlite3*);
# 2350 "./sqlite3.h"
 void sqlite3_set_last_insert_rowid(sqlite3*,sqlite3_int64);
# 2408 "./sqlite3.h"
 int sqlite3_changes(sqlite3*);
# 2445 "./sqlite3.h"
 int sqlite3_total_changes(sqlite3*);
# 2482 "./sqlite3.h"
 void sqlite3_interrupt(sqlite3*);
# 2517 "./sqlite3.h"
 int sqlite3_complete(const char *sql);
 int sqlite3_complete16(const void *sql);
# 2579 "./sqlite3.h"
 int sqlite3_busy_handler(sqlite3*,int(*)(void*,int),void*);
# 2602 "./sqlite3.h"
 int sqlite3_busy_timeout(sqlite3*, int ms);
# 2677 "./sqlite3.h"
 int sqlite3_get_table(
  sqlite3 *db,
  const char *zSql,
  char ***pazResult,
  int *pnRow,
  int *pnColumn,
  char **pzErrmsg
);
 void sqlite3_free_table(char **result);
# 2727 "./sqlite3.h"
 char *sqlite3_mprintf(const char*,...);
 char *sqlite3_vmprintf(const char*, va_list);
 char *sqlite3_snprintf(int,char*,const char*, ...);
 char *sqlite3_vsnprintf(int,char*,const char*, va_list);
# 2820 "./sqlite3.h"
 void *sqlite3_malloc(int);
 void *sqlite3_malloc64(sqlite3_uint64);
 void *sqlite3_realloc(void*, int);
 void *sqlite3_realloc64(void*, sqlite3_uint64);
 void sqlite3_free(void*);
 sqlite3_uint64 sqlite3_msize(void*);
# 2850 "./sqlite3.h"
 sqlite3_int64 sqlite3_memory_used(void);
 sqlite3_int64 sqlite3_memory_highwater(int resetFlag);
# 2874 "./sqlite3.h"
 void sqlite3_randomness(int N, void *P);
# 2965 "./sqlite3.h"
 int sqlite3_set_authorizer(
  sqlite3*,
  int (*xAuth)(void*,int,const char*,const char*,const char*,const char*),
  void *pUserData
);
# 3073 "./sqlite3.h"
 void *sqlite3_trace(sqlite3*,
   void(*xTrace)(void*,const char*), void*);
 void *sqlite3_profile(sqlite3*,
   void(*xProfile)(void*,const char*,sqlite3_uint64), void*);
# 3164 "./sqlite3.h"
 int sqlite3_trace_v2(
  sqlite3*,
  unsigned uMask,
  int(*xCallback)(unsigned,void*,void*,void*),
  void *pCtx
);
# 3203 "./sqlite3.h"
 void sqlite3_progress_handler(sqlite3*, int, int(*)(void*), void*);
# 3432 "./sqlite3.h"
 int sqlite3_open(
  const char *filename,
  sqlite3 **ppDb
);
 int sqlite3_open16(
  const void *filename,
  sqlite3 **ppDb
);
 int sqlite3_open_v2(
  const char *filename,
  sqlite3 **ppDb,
  int flags,
  const char *zVfs
);
# 3488 "./sqlite3.h"
 const char *sqlite3_uri_parameter(const char *zFilename, const char *zParam);
 int sqlite3_uri_boolean(const char *zFile, const char *zParam, int bDefault);
 sqlite3_int64 sqlite3_uri_int64(const char*, const char*, sqlite3_int64);
# 3545 "./sqlite3.h"
 int sqlite3_errcode(sqlite3 *db);
 int sqlite3_extended_errcode(sqlite3 *db);
 const char *sqlite3_errmsg(sqlite3*);
 const void *sqlite3_errmsg16(sqlite3*);
 const char *sqlite3_errstr(int);
# 3575 "./sqlite3.h"
typedef struct sqlite3_stmt sqlite3_stmt;
# 3617 "./sqlite3.h"
 int sqlite3_limit(sqlite3*, int id, int newVal);
# 3827 "./sqlite3.h"
 int sqlite3_prepare(
  sqlite3 *db,
  const char *zSql,
  int nByte,
  sqlite3_stmt **ppStmt,
  const char **pzTail
);
 int sqlite3_prepare_v2(
  sqlite3 *db,
  const char *zSql,
  int nByte,
  sqlite3_stmt **ppStmt,
  const char **pzTail
);
 int sqlite3_prepare_v3(
  sqlite3 *db,
  const char *zSql,
  int nByte,
  unsigned int prepFlags,
  sqlite3_stmt **ppStmt,
  const char **pzTail
);
 int sqlite3_prepare16(
  sqlite3 *db,
  const void *zSql,
  int nByte,
  sqlite3_stmt **ppStmt,
  const void **pzTail
);
 int sqlite3_prepare16_v2(
  sqlite3 *db,
  const void *zSql,
  int nByte,
  sqlite3_stmt **ppStmt,
  const void **pzTail
);
 int sqlite3_prepare16_v3(
  sqlite3 *db,
  const void *zSql,
  int nByte,
  unsigned int prepFlags,
  sqlite3_stmt **ppStmt,
  const void **pzTail
);
# 3910 "./sqlite3.h"
 const char *sqlite3_sql(sqlite3_stmt *pStmt);
 char *sqlite3_expanded_sql(sqlite3_stmt *pStmt);
 const char *sqlite3_normalized_sql(sqlite3_stmt *pStmt);
# 3948 "./sqlite3.h"
 int sqlite3_stmt_readonly(sqlite3_stmt *pStmt);
# 3960 "./sqlite3.h"
 int sqlite3_stmt_isexplain(sqlite3_stmt *pStmt);
# 3981 "./sqlite3.h"
 int sqlite3_stmt_busy(sqlite3_stmt*);
# 4023 "./sqlite3.h"
typedef struct sqlite3_value sqlite3_value;
# 4037 "./sqlite3.h"
typedef struct sqlite3_context sqlite3_context;
# 4157 "./sqlite3.h"
 int sqlite3_bind_blob(sqlite3_stmt*, int, const void*, int n, void(*)(void*));
 int sqlite3_bind_blob64(sqlite3_stmt*, int, const void*, sqlite3_uint64,
                        void(*)(void*));
 int sqlite3_bind_double(sqlite3_stmt*, int, double);
 int sqlite3_bind_int(sqlite3_stmt*, int, int);
 int sqlite3_bind_int64(sqlite3_stmt*, int, sqlite3_int64);
 int sqlite3_bind_null(sqlite3_stmt*, int);
 int sqlite3_bind_text(sqlite3_stmt*,int,const char*,int,void(*)(void*));
 int sqlite3_bind_text16(sqlite3_stmt*, int, const void*, int, void(*)(void*));
 int sqlite3_bind_text64(sqlite3_stmt*, int, const char*, sqlite3_uint64,
                         void(*)(void*), unsigned char encoding);
 int sqlite3_bind_value(sqlite3_stmt*, int, const sqlite3_value*);
 int sqlite3_bind_pointer(sqlite3_stmt*, int, void*, const char*,void(*)(void*));
 int sqlite3_bind_zeroblob(sqlite3_stmt*, int, int n);
 int sqlite3_bind_zeroblob64(sqlite3_stmt*, int, sqlite3_uint64);
# 4192 "./sqlite3.h"
 int sqlite3_bind_parameter_count(sqlite3_stmt*);
# 4220 "./sqlite3.h"
 const char *sqlite3_bind_parameter_name(sqlite3_stmt*, int);
# 4238 "./sqlite3.h"
 int sqlite3_bind_parameter_index(sqlite3_stmt*, const char *zName);
# 4248 "./sqlite3.h"
 int sqlite3_clear_bindings(sqlite3_stmt*);
# 4264 "./sqlite3.h"
 int sqlite3_column_count(sqlite3_stmt *pStmt);
# 4293 "./sqlite3.h"
 const char *sqlite3_column_name(sqlite3_stmt*, int N);
 const void *sqlite3_column_name16(sqlite3_stmt*, int N);
# 4342 "./sqlite3.h"
 const char *sqlite3_column_database_name(sqlite3_stmt*,int);
 const void *sqlite3_column_database_name16(sqlite3_stmt*,int);
 const char *sqlite3_column_table_name(sqlite3_stmt*,int);
 const void *sqlite3_column_table_name16(sqlite3_stmt*,int);
 const char *sqlite3_column_origin_name(sqlite3_stmt*,int);
 const void *sqlite3_column_origin_name16(sqlite3_stmt*,int);
# 4379 "./sqlite3.h"
 const char *sqlite3_column_decltype(sqlite3_stmt*,int);
 const void *sqlite3_column_decltype16(sqlite3_stmt*,int);
# 4464 "./sqlite3.h"
 int sqlite3_step(sqlite3_stmt*);
# 4485 "./sqlite3.h"
 int sqlite3_data_count(sqlite3_stmt *pStmt);
# 4728 "./sqlite3.h"
 const void *sqlite3_column_blob(sqlite3_stmt*, int iCol);
 double sqlite3_column_double(sqlite3_stmt*, int iCol);
 int sqlite3_column_int(sqlite3_stmt*, int iCol);
 sqlite3_int64 sqlite3_column_int64(sqlite3_stmt*, int iCol);
 const unsigned char *sqlite3_column_text(sqlite3_stmt*, int iCol);
 const void *sqlite3_column_text16(sqlite3_stmt*, int iCol);
 sqlite3_value *sqlite3_column_value(sqlite3_stmt*, int iCol);
 int sqlite3_column_bytes(sqlite3_stmt*, int iCol);
 int sqlite3_column_bytes16(sqlite3_stmt*, int iCol);
 int sqlite3_column_type(sqlite3_stmt*, int iCol);
# 4765 "./sqlite3.h"
 int sqlite3_finalize(sqlite3_stmt *pStmt);
# 4792 "./sqlite3.h"
 int sqlite3_reset(sqlite3_stmt *pStmt);
# 4904 "./sqlite3.h"
 int sqlite3_create_function(
  sqlite3 *db,
  const char *zFunctionName,
  int nArg,
  int eTextRep,
  void *pApp,
  void (*xFunc)(sqlite3_context*,int,sqlite3_value**),
  void (*xStep)(sqlite3_context*,int,sqlite3_value**),
  void (*xFinal)(sqlite3_context*)
);
 int sqlite3_create_function16(
  sqlite3 *db,
  const void *zFunctionName,
  int nArg,
  int eTextRep,
  void *pApp,
  void (*xFunc)(sqlite3_context*,int,sqlite3_value**),
  void (*xStep)(sqlite3_context*,int,sqlite3_value**),
  void (*xFinal)(sqlite3_context*)
);
 int sqlite3_create_function_v2(
  sqlite3 *db,
  const char *zFunctionName,
  int nArg,
  int eTextRep,
  void *pApp,
  void (*xFunc)(sqlite3_context*,int,sqlite3_value**),
  void (*xStep)(sqlite3_context*,int,sqlite3_value**),
  void (*xFinal)(sqlite3_context*),
  void(*xDestroy)(void*)
);
 int sqlite3_create_window_function(
  sqlite3 *db,
  const char *zFunctionName,
  int nArg,
  int eTextRep,
  void *pApp,
  void (*xStep)(sqlite3_context*,int,sqlite3_value**),
  void (*xFinal)(sqlite3_context*),
  void (*xValue)(sqlite3_context*),
  void (*xInverse)(sqlite3_context*,int,sqlite3_value**),
  void(*xDestroy)(void*)
);
# 4982 "./sqlite3.h"
 int sqlite3_aggregate_count(sqlite3_context*);
 int sqlite3_expired(sqlite3_stmt*);
 int sqlite3_transfer_bindings(sqlite3_stmt*, sqlite3_stmt*);
 int sqlite3_global_recover(void);
 void sqlite3_thread_cleanup(void);
 int sqlite3_memory_alarm(void(*)(void*,sqlite3_int64,int),
                      void*,sqlite3_int64);
# 5119 "./sqlite3.h"
 const void *sqlite3_value_blob(sqlite3_value*);
 double sqlite3_value_double(sqlite3_value*);
 int sqlite3_value_int(sqlite3_value*);
 sqlite3_int64 sqlite3_value_int64(sqlite3_value*);
 void *sqlite3_value_pointer(sqlite3_value*, const char*);
 const unsigned char *sqlite3_value_text(sqlite3_value*);
 const void *sqlite3_value_text16(sqlite3_value*);
 const void *sqlite3_value_text16le(sqlite3_value*);
 const void *sqlite3_value_text16be(sqlite3_value*);
 int sqlite3_value_bytes(sqlite3_value*);
 int sqlite3_value_bytes16(sqlite3_value*);
 int sqlite3_value_type(sqlite3_value*);
 int sqlite3_value_numeric_type(sqlite3_value*);
 int sqlite3_value_nochange(sqlite3_value*);
 int sqlite3_value_frombind(sqlite3_value*);
# 5145 "./sqlite3.h"
 unsigned int sqlite3_value_subtype(sqlite3_value*);
# 5161 "./sqlite3.h"
 sqlite3_value *sqlite3_value_dup(const sqlite3_value*);
 void sqlite3_value_free(sqlite3_value*);
# 5207 "./sqlite3.h"
 void *sqlite3_aggregate_context(sqlite3_context*, int nBytes);
# 5222 "./sqlite3.h"
 void *sqlite3_user_data(sqlite3_context*);
# 5234 "./sqlite3.h"
 sqlite3 *sqlite3_context_db_handle(sqlite3_context*);
# 5293 "./sqlite3.h"
 void *sqlite3_get_auxdata(sqlite3_context*, int N);
 void sqlite3_set_auxdata(sqlite3_context*, int N, void*, void (*)(void*));
# 5311 "./sqlite3.h"
typedef void (*sqlite3_destructor_type)(void*);
# 5441 "./sqlite3.h"
 void sqlite3_result_blob(sqlite3_context*, const void*, int, void(*)(void*));
 void sqlite3_result_blob64(sqlite3_context*,const void*,
                           sqlite3_uint64,void(*)(void*));
 void sqlite3_result_double(sqlite3_context*, double);
 void sqlite3_result_error(sqlite3_context*, const char*, int);
 void sqlite3_result_error16(sqlite3_context*, const void*, int);
 void sqlite3_result_error_toobig(sqlite3_context*);
 void sqlite3_result_error_nomem(sqlite3_context*);
 void sqlite3_result_error_code(sqlite3_context*, int);
 void sqlite3_result_int(sqlite3_context*, int);
 void sqlite3_result_int64(sqlite3_context*, sqlite3_int64);
 void sqlite3_result_null(sqlite3_context*);
 void sqlite3_result_text(sqlite3_context*, const char*, int, void(*)(void*));
 void sqlite3_result_text64(sqlite3_context*, const char*,sqlite3_uint64,
                           void(*)(void*), unsigned char encoding);
 void sqlite3_result_text16(sqlite3_context*, const void*, int, void(*)(void*));
 void sqlite3_result_text16le(sqlite3_context*, const void*, int,void(*)(void*));
 void sqlite3_result_text16be(sqlite3_context*, const void*, int,void(*)(void*));
 void sqlite3_result_value(sqlite3_context*, sqlite3_value*);
 void sqlite3_result_pointer(sqlite3_context*, void*,const char*,void(*)(void*));
 void sqlite3_result_zeroblob(sqlite3_context*, int n);
 int sqlite3_result_zeroblob64(sqlite3_context*, sqlite3_uint64 n);
# 5477 "./sqlite3.h"
 void sqlite3_result_subtype(sqlite3_context*,unsigned int);
# 5559 "./sqlite3.h"
 int sqlite3_create_collation(
  sqlite3*,
  const char *zName,
  int eTextRep,
  void *pArg,
  int(*xCompare)(void*,int,const void*,int,const void*)
);
 int sqlite3_create_collation_v2(
  sqlite3*,
  const char *zName,
  int eTextRep,
  void *pArg,
  int(*xCompare)(void*,int,const void*,int,const void*),
  void(*xDestroy)(void*)
);
 int sqlite3_create_collation16(
  sqlite3*,
  const void *zName,
  int eTextRep,
  void *pArg,
  int(*xCompare)(void*,int,const void*,int,const void*)
);
# 5609 "./sqlite3.h"
 int sqlite3_collation_needed(
  sqlite3*,
  void*,
  void(*)(void*,sqlite3*,int eTextRep,const char*)
);
 int sqlite3_collation_needed16(
  sqlite3*,
  void*,
  void(*)(void*,sqlite3*,int eTextRep,const void*)
);
# 5692 "./sqlite3.h"
 int sqlite3_sleep(int);
# 5750 "./sqlite3.h"
 extern char *sqlite3_temp_directory;
# 5787 "./sqlite3.h"
 extern char *sqlite3_data_directory;
# 5808 "./sqlite3.h"
 int sqlite3_win32_set_directory(
  unsigned long type,
  void *zValue
);
 int sqlite3_win32_set_directory8(unsigned long type, const char *zValue);
 int sqlite3_win32_set_directory16(unsigned long type, const void *zValue);
# 5846 "./sqlite3.h"
 int sqlite3_get_autocommit(sqlite3*);
# 5859 "./sqlite3.h"
 sqlite3 *sqlite3_db_handle(sqlite3_stmt*);
# 5876 "./sqlite3.h"
 const char *sqlite3_db_filename(sqlite3 *db, const char *zDbName);
# 5886 "./sqlite3.h"
 int sqlite3_db_readonly(sqlite3 *db, const char *zDbName);
# 5902 "./sqlite3.h"
 sqlite3_stmt *sqlite3_next_stmt(sqlite3 *pDb, sqlite3_stmt *pStmt);
# 5951 "./sqlite3.h"
 void *sqlite3_commit_hook(sqlite3*, int(*)(void*), void*);
 void *sqlite3_rollback_hook(sqlite3*, void(*)(void *), void*);
# 6003 "./sqlite3.h"
 void *sqlite3_update_hook(
  sqlite3*,
  void(*)(void *,int ,char const *,char const *,sqlite3_int64),
  void*
);
# 6044 "./sqlite3.h"
 int sqlite3_enable_shared_cache(int);
# 6060 "./sqlite3.h"
 int sqlite3_release_memory(int);
# 6074 "./sqlite3.h"
 int sqlite3_db_release_memory(sqlite3*);
# 6127 "./sqlite3.h"
 sqlite3_int64 sqlite3_soft_heap_limit64(sqlite3_int64 N);
# 6138 "./sqlite3.h"
 void sqlite3_soft_heap_limit(int N);
# 6210 "./sqlite3.h"
 int sqlite3_table_column_metadata(
  sqlite3 *db,
  const char *zDbName,
  const char *zTableName,
  const char *zColumnName,
  char const **pzDataType,
  char const **pzCollSeq,
  int *pNotNull,
  int *pPrimaryKey,
  int *pAutoinc
);
# 6266 "./sqlite3.h"
 int sqlite3_load_extension(
  sqlite3 *db,
  const char *zFile,
  const char *zProc,
  char **pzErrMsg
);
# 6298 "./sqlite3.h"
 int sqlite3_enable_load_extension(sqlite3 *db, int onoff);
# 6336 "./sqlite3.h"
 int sqlite3_auto_extension(void(*xEntryPoint)(void));
# 6348 "./sqlite3.h"
 int sqlite3_cancel_auto_extension(void(*xEntryPoint)(void));


 void sqlite3_reset_auto_extension(void);
# 6370 "./sqlite3.h"
typedef struct sqlite3_vtab sqlite3_vtab;
typedef struct sqlite3_index_info sqlite3_index_info;
typedef struct sqlite3_vtab_cursor sqlite3_vtab_cursor;
typedef struct sqlite3_module sqlite3_module;
# 6391 "./sqlite3.h"
struct sqlite3_module {
  int iVersion;
  int (*xCreate)(sqlite3*, void *pAux,
               int argc, const char *const*argv,
               sqlite3_vtab **ppVTab, char**);
  int (*xConnect)(sqlite3*, void *pAux,
               int argc, const char *const*argv,
               sqlite3_vtab **ppVTab, char**);
  int (*xBestIndex)(sqlite3_vtab *pVTab, sqlite3_index_info*);
  int (*xDisconnect)(sqlite3_vtab *pVTab);
  int (*xDestroy)(sqlite3_vtab *pVTab);
  int (*xOpen)(sqlite3_vtab *pVTab, sqlite3_vtab_cursor **ppCursor);
  int (*xClose)(sqlite3_vtab_cursor*);
  int (*xFilter)(sqlite3_vtab_cursor*, int idxNum, const char *idxStr,
                int argc, sqlite3_value **argv);
  int (*xNext)(sqlite3_vtab_cursor*);
  int (*xEof)(sqlite3_vtab_cursor*);
  int (*xColumn)(sqlite3_vtab_cursor*, sqlite3_context*, int);
  int (*xRowid)(sqlite3_vtab_cursor*, sqlite3_int64 *pRowid);
  int (*xUpdate)(sqlite3_vtab *, int, sqlite3_value **, sqlite3_int64 *);
  int (*xBegin)(sqlite3_vtab *pVTab);
  int (*xSync)(sqlite3_vtab *pVTab);
  int (*xCommit)(sqlite3_vtab *pVTab);
  int (*xRollback)(sqlite3_vtab *pVTab);
  int (*xFindFunction)(sqlite3_vtab *pVtab, int nArg, const char *zName,
                       void (**pxFunc)(sqlite3_context*,int,sqlite3_value**),
                       void **ppArg);
  int (*xRename)(sqlite3_vtab *pVtab, const char *zNew);


  int (*xSavepoint)(sqlite3_vtab *pVTab, int);
  int (*xRelease)(sqlite3_vtab *pVTab, int);
  int (*xRollbackTo)(sqlite3_vtab *pVTab, int);


  int (*xShadowName)(const char*);
};
# 6525 "./sqlite3.h"
struct sqlite3_index_info {

  int nConstraint;
  struct sqlite3_index_constraint {
     int iColumn;
     unsigned char op;
     unsigned char usable;
     int iTermOffset;
  } *aConstraint;
  int nOrderBy;
  struct sqlite3_index_orderby {
     int iColumn;
     unsigned char desc;
  } *aOrderBy;

  struct sqlite3_index_constraint_usage {
    int argvIndex;
    unsigned char omit;
  } *aConstraintUsage;
  int idxNum;
  char *idxStr;
  int needToFreeIdxStr;
  int orderByConsumed;
  double estimatedCost;

  sqlite3_int64 estimatedRows;

  int idxFlags;

  sqlite3_uint64 colUsed;
};
# 6616 "./sqlite3.h"
 int sqlite3_create_module(
  sqlite3 *db,
  const char *zName,
  const sqlite3_module *p,
  void *pClientData
);
 int sqlite3_create_module_v2(
  sqlite3 *db,
  const char *zName,
  const sqlite3_module *p,
  void *pClientData,
  void(*xDestroy)(void*)
);
# 6648 "./sqlite3.h"
struct sqlite3_vtab {
  const sqlite3_module *pModule;
  int nRef;
  char *zErrMsg;

};
# 6672 "./sqlite3.h"
struct sqlite3_vtab_cursor {
  sqlite3_vtab *pVtab;

};
# 6685 "./sqlite3.h"
 int sqlite3_declare_vtab(sqlite3*, const char *zSQL);
# 6704 "./sqlite3.h"
 int sqlite3_overload_function(sqlite3*, const char *zFuncName, int nArg);
# 6728 "./sqlite3.h"
typedef struct sqlite3_blob sqlite3_blob;
# 6813 "./sqlite3.h"
 int sqlite3_blob_open(
  sqlite3*,
  const char *zDb,
  const char *zTable,
  const char *zColumn,
  sqlite3_int64 iRow,
  int flags,
  sqlite3_blob **ppBlob
);
# 6846 "./sqlite3.h"
 int sqlite3_blob_reopen(sqlite3_blob *, sqlite3_int64);
# 6869 "./sqlite3.h"
 int sqlite3_blob_close(sqlite3_blob *);
# 6885 "./sqlite3.h"
 int sqlite3_blob_bytes(sqlite3_blob *);
# 6914 "./sqlite3.h"
 int sqlite3_blob_read(sqlite3_blob *, void *Z, int N, int iOffset);
# 6956 "./sqlite3.h"
 int sqlite3_blob_write(sqlite3_blob *, const void *z, int n, int iOffset);
# 6987 "./sqlite3.h"
 sqlite3_vfs *sqlite3_vfs_find(const char *zVfsName);
 int sqlite3_vfs_register(sqlite3_vfs*, int makeDflt);
 int sqlite3_vfs_unregister(sqlite3_vfs*);
# 7105 "./sqlite3.h"
 sqlite3_mutex *sqlite3_mutex_alloc(int);
 void sqlite3_mutex_free(sqlite3_mutex*);
 void sqlite3_mutex_enter(sqlite3_mutex*);
 int sqlite3_mutex_try(sqlite3_mutex*);
 void sqlite3_mutex_leave(sqlite3_mutex*);
# 7176 "./sqlite3.h"
typedef struct sqlite3_mutex_methods sqlite3_mutex_methods;
struct sqlite3_mutex_methods {
  int (*xMutexInit)(void);
  int (*xMutexEnd)(void);
  sqlite3_mutex *(*xMutexAlloc)(int);
  void (*xMutexFree)(sqlite3_mutex *);
  void (*xMutexEnter)(sqlite3_mutex *);
  int (*xMutexTry)(sqlite3_mutex *);
  void (*xMutexLeave)(sqlite3_mutex *);
  int (*xMutexHeld)(sqlite3_mutex *);
  int (*xMutexNotheld)(sqlite3_mutex *);
};
# 7219 "./sqlite3.h"
 int sqlite3_mutex_held(sqlite3_mutex*);
 int sqlite3_mutex_notheld(sqlite3_mutex*);
# 7260 "./sqlite3.h"
 sqlite3_mutex *sqlite3_db_mutex(sqlite3*);
# 7303 "./sqlite3.h"
 int sqlite3_file_control(sqlite3*, const char *zDbName, int op, void*);
# 7322 "./sqlite3.h"
 int sqlite3_test_control(int op, ...);
# 7410 "./sqlite3.h"
 int sqlite3_keyword_count(void);
 int sqlite3_keyword_name(int,const char**,int*);
 int sqlite3_keyword_check(const char*,int);
# 7430 "./sqlite3.h"
typedef struct sqlite3_str sqlite3_str;
# 7457 "./sqlite3.h"
 sqlite3_str *sqlite3_str_new(sqlite3*);
# 7472 "./sqlite3.h"
 char *sqlite3_str_finish(sqlite3_str*);
# 7506 "./sqlite3.h"
 void sqlite3_str_appendf(sqlite3_str*, const char *zFormat, ...);
 void sqlite3_str_vappendf(sqlite3_str*, const char *zFormat, va_list);
 void sqlite3_str_append(sqlite3_str*, const char *zIn, int N);
 void sqlite3_str_appendall(sqlite3_str*, const char *zIn);
 void sqlite3_str_appendchar(sqlite3_str*, int N, char C);
 void sqlite3_str_reset(sqlite3_str*);
# 7542 "./sqlite3.h"
 int sqlite3_str_errcode(sqlite3_str*);
 int sqlite3_str_length(sqlite3_str*);
 char *sqlite3_str_value(sqlite3_str*);
# 7572 "./sqlite3.h"
 int sqlite3_status(int op, int *pCurrent, int *pHighwater, int resetFlag);
 int sqlite3_status64(
  int op,
  sqlite3_int64 *pCurrent,
  sqlite3_int64 *pHighwater,
  int resetFlag
);
# 7682 "./sqlite3.h"
 int sqlite3_db_status(sqlite3*, int op, int *pCur, int *pHiwtr, int resetFlg);
# 7835 "./sqlite3.h"
 int sqlite3_stmt_status(sqlite3_stmt*, int op,int resetFlg);
# 7911 "./sqlite3.h"
typedef struct sqlite3_pcache sqlite3_pcache;
# 7923 "./sqlite3.h"
typedef struct sqlite3_pcache_page sqlite3_pcache_page;
struct sqlite3_pcache_page {
  void *pBuf;
  void *pExtra;
};
# 8088 "./sqlite3.h"
typedef struct sqlite3_pcache_methods2 sqlite3_pcache_methods2;
struct sqlite3_pcache_methods2 {
  int iVersion;
  void *pArg;
  int (*xInit)(void*);
  void (*xShutdown)(void*);
  sqlite3_pcache *(*xCreate)(int szPage, int szExtra, int bPurgeable);
  void (*xCachesize)(sqlite3_pcache*, int nCachesize);
  int (*xPagecount)(sqlite3_pcache*);
  sqlite3_pcache_page *(*xFetch)(sqlite3_pcache*, unsigned key, int createFlag);
  void (*xUnpin)(sqlite3_pcache*, sqlite3_pcache_page*, int discard);
  void (*xRekey)(sqlite3_pcache*, sqlite3_pcache_page*,
      unsigned oldKey, unsigned newKey);
  void (*xTruncate)(sqlite3_pcache*, unsigned iLimit);
  void (*xDestroy)(sqlite3_pcache*);
  void (*xShrink)(sqlite3_pcache*);
};


typedef struct sqlite3_pcache_methods sqlite3_pcache_methods;
struct sqlite3_pcache_methods {
  void *pArg;
  int (*xInit)(void*);
  void (*xShutdown)(void*);
  sqlite3_pcache *(*xCreate)(int szPage, int bPurgeable);
  void (*xCachesize)(sqlite3_pcache*, int nCachesize);
  int (*xPagecount)(sqlite3_pcache*);
  void *(*xFetch)(sqlite3_pcache*, unsigned key, int createFlag);
  void (*xUnpin)(sqlite3_pcache*, void*, int discard);
  void (*xRekey)(sqlite3_pcache*, void*, unsigned oldKey, unsigned newKey);
  void (*xTruncate)(sqlite3_pcache*, unsigned iLimit);
  void (*xDestroy)(sqlite3_pcache*);
};
# 8137 "./sqlite3.h"
typedef struct sqlite3_backup sqlite3_backup;
# 8325 "./sqlite3.h"
 sqlite3_backup *sqlite3_backup_init(
  sqlite3 *pDest,
  const char *zDestName,
  sqlite3 *pSource,
  const char *zSourceName
);
 int sqlite3_backup_step(sqlite3_backup *p, int nPage);
 int sqlite3_backup_finish(sqlite3_backup *p);
 int sqlite3_backup_remaining(sqlite3_backup *p);
 int sqlite3_backup_pagecount(sqlite3_backup *p);
# 8451 "./sqlite3.h"
 int sqlite3_unlock_notify(
  sqlite3 *pBlocked,
  void (*xNotify)(void **apArg, int nArg),
  void *pNotifyArg
);
# 8466 "./sqlite3.h"
 int sqlite3_stricmp(const char *, const char *);
 int sqlite3_strnicmp(const char *, const char *, int);
# 8484 "./sqlite3.h"
 int sqlite3_strglob(const char *zGlob, const char *zStr);
# 8507 "./sqlite3.h"
 int sqlite3_strlike(const char *zGlob, const char *zStr, unsigned int cEsc);
# 8530 "./sqlite3.h"
 void sqlite3_log(int iErrCode, const char *zFormat, ...);
# 8566 "./sqlite3.h"
 void *sqlite3_wal_hook(
  sqlite3*,
  int(*)(void *,sqlite3*,const char*,int),
  void*
);
# 8601 "./sqlite3.h"
 int sqlite3_wal_autocheckpoint(sqlite3 *db, int N);
# 8623 "./sqlite3.h"
 int sqlite3_wal_checkpoint(sqlite3 *db, const char *zDb);
# 8717 "./sqlite3.h"
 int sqlite3_wal_checkpoint_v2(
  sqlite3 *db,
  const char *zDb,
  int eMode,
  int *pnLog,
  int *pnCkpt
);
# 8753 "./sqlite3.h"
 int sqlite3_vtab_config(sqlite3*, int op, ...);
# 8807 "./sqlite3.h"
 int sqlite3_vtab_on_conflict(sqlite3 *);
# 8826 "./sqlite3.h"
 int sqlite3_vtab_nochange(sqlite3_context*);
# 8841 "./sqlite3.h"
 const char *sqlite3_vtab_collation(sqlite3_index_info*,int);
# 8946 "./sqlite3.h"
 int sqlite3_stmt_scanstatus(
  sqlite3_stmt *pStmt,
  int idx,
  int iScanStatusOp,
  void *pOut
);
# 8962 "./sqlite3.h"
 void sqlite3_stmt_scanstatus_reset(sqlite3_stmt*);
# 8994 "./sqlite3.h"
 int sqlite3_db_cacheflush(sqlite3*);
# 9108 "./sqlite3.h"
 int sqlite3_system_errno(sqlite3*);
# 9130 "./sqlite3.h"
typedef struct sqlite3_snapshot {
  unsigned char hidden[48];
} sqlite3_snapshot;
# 9177 "./sqlite3.h"
 int sqlite3_snapshot_get(
  sqlite3 *db,
  const char *zSchema,
  sqlite3_snapshot **ppSnapshot
);
# 9226 "./sqlite3.h"
 int sqlite3_snapshot_open(
  sqlite3 *db,
  const char *zSchema,
  sqlite3_snapshot *pSnapshot
);
# 9243 "./sqlite3.h"
 void sqlite3_snapshot_free(sqlite3_snapshot*);
# 9270 "./sqlite3.h"
 int sqlite3_snapshot_cmp(
  sqlite3_snapshot *p1,
  sqlite3_snapshot *p2
);
# 9298 "./sqlite3.h"
 int sqlite3_snapshot_recover(sqlite3 *db, const char *zDb);
# 9336 "./sqlite3.h"
 unsigned char *sqlite3_serialize(
  sqlite3 *db,
  const char *zSchema,
  sqlite3_int64 *piSize,
  unsigned int mFlags
);
# 9388 "./sqlite3.h"
 int sqlite3_deserialize(
  sqlite3 *db,
  const char *zSchema,
  unsigned char *pData,
  sqlite3_int64 szDb,
  sqlite3_int64 szBuf,
  unsigned mFlags
);
# 9457 "./sqlite3.h"
typedef struct sqlite3_rtree_geometry sqlite3_rtree_geometry;
typedef struct sqlite3_rtree_query_info sqlite3_rtree_query_info;


  typedef double sqlite3_rtree_dbl;
# 9475 "./sqlite3.h"
 int sqlite3_rtree_geometry_callback(
  sqlite3 *db,
  const char *zGeom,
  int (*xGeom)(sqlite3_rtree_geometry*, int, sqlite3_rtree_dbl*,int*),
  void *pContext
);


struct sqlite3_rtree_geometry {
  void *pContext;
  int nParam;
  sqlite3_rtree_dbl *aParam;
  void *pUser;
  void (*xDelUser)(void *);
};


 int sqlite3_rtree_query_callback(
  sqlite3 *db,
  const char *zQueryFunc,
  int (*xQueryFunc)(sqlite3_rtree_query_info*),
  void *pContext,
  void (*xDestructor)(void*)
);
# 9519 "./sqlite3.h"
struct sqlite3_rtree_query_info {
  void *pContext;
  int nParam;
  sqlite3_rtree_dbl *aParam;
  void *pUser;
  void (*xDelUser)(void*);
  sqlite3_rtree_dbl *aCoord;
  unsigned int *anQueue;
  int nCoord;
  int iLevel;
  int mxLevel;
  sqlite3_int64 iRowid;
  sqlite3_rtree_dbl rParentScore;
  int eParentWithin;
  int eWithin;
  sqlite3_rtree_dbl rScore;

  sqlite3_value **apSqlParam;
};
# 11252 "./sqlite3.h"
typedef struct Fts5ExtensionApi Fts5ExtensionApi;
typedef struct Fts5Context Fts5Context;
typedef struct Fts5PhraseIter Fts5PhraseIter;

typedef void (*fts5_extension_function)(
  const Fts5ExtensionApi *pApi,
  Fts5Context *pFts,
  sqlite3_context *pCtx,
  int nVal,
  sqlite3_value **apVal
);

struct Fts5PhraseIter {
  const unsigned char *a;
  const unsigned char *b;
};
# 11480 "./sqlite3.h"
struct Fts5ExtensionApi {
  int iVersion;

  void *(*xUserData)(Fts5Context*);

  int (*xColumnCount)(Fts5Context*);
  int (*xRowCount)(Fts5Context*, sqlite3_int64 *pnRow);
  int (*xColumnTotalSize)(Fts5Context*, int iCol, sqlite3_int64 *pnToken);

  int (*xTokenize)(Fts5Context*,
    const char *pText, int nText,
    void *pCtx,
    int (*xToken)(void*, int, const char*, int, int, int)
  );

  int (*xPhraseCount)(Fts5Context*);
  int (*xPhraseSize)(Fts5Context*, int iPhrase);

  int (*xInstCount)(Fts5Context*, int *pnInst);
  int (*xInst)(Fts5Context*, int iIdx, int *piPhrase, int *piCol, int *piOff);

  sqlite3_int64 (*xRowid)(Fts5Context*);
  int (*xColumnText)(Fts5Context*, int iCol, const char **pz, int *pn);
  int (*xColumnSize)(Fts5Context*, int iCol, int *pnToken);

  int (*xQueryPhrase)(Fts5Context*, int iPhrase, void *pUserData,
    int(*)(const Fts5ExtensionApi*,Fts5Context*,void*)
  );
  int (*xSetAuxdata)(Fts5Context*, void *pAux, void(*xDelete)(void*));
  void *(*xGetAuxdata)(Fts5Context*, int bClear);

  int (*xPhraseFirst)(Fts5Context*, int iPhrase, Fts5PhraseIter*, int*, int*);
  void (*xPhraseNext)(Fts5Context*, Fts5PhraseIter*, int *piCol, int *piOff);

  int (*xPhraseFirstColumn)(Fts5Context*, int iPhrase, Fts5PhraseIter*, int*);
  void (*xPhraseNextColumn)(Fts5Context*, Fts5PhraseIter*, int *piCol);
};
# 11714 "./sqlite3.h"
typedef struct Fts5Tokenizer Fts5Tokenizer;
typedef struct fts5_tokenizer fts5_tokenizer;
struct fts5_tokenizer {
  int (*xCreate)(void*, const char **azArg, int nArg, Fts5Tokenizer **ppOut);
  void (*xDelete)(Fts5Tokenizer*);
  int (*xTokenize)(Fts5Tokenizer*,
      void *pCtx,
      int flags,
      const char *pText, int nText,
      int (*xToken)(
        void *pCtx,
        int tflags,
        const char *pToken,
        int nToken,
        int iStart,
        int iEnd
      )
  );
};
# 11751 "./sqlite3.h"
typedef struct fts5_api fts5_api;
struct fts5_api {
  int iVersion;


  int (*xCreateTokenizer)(
    fts5_api *pApi,
    const char *zName,
    void *pContext,
    fts5_tokenizer *pTokenizer,
    void (*xDestroy)(void*)
  );


  int (*xFindTokenizer)(
    fts5_api *pApi,
    const char *zName,
    void **ppContext,
    fts5_tokenizer *pTokenizer
  );


  int (*xCreateFunction)(
    fts5_api *pApi,
    const char *zName,
    void *pContext,
    fts5_extension_function xFunction,
    void (*xDestroy)(void*)
  );
};
# 168 "src/sqliteInt.h" 2
# 178 "src/sqliteInt.h"
# 1 "src/sqliteLimit.h" 1
# 179 "src/sqliteInt.h" 2
# 529 "src/sqliteInt.h"
# 1 "src/hash.h" 1
# 19 "src/hash.h"
typedef struct Hash Hash;
typedef struct HashElem HashElem;
# 43 "src/hash.h"
struct Hash {
  unsigned int htsize;
  unsigned int count;
  HashElem *first;
  struct _ht {
    unsigned int count;
    HashElem *chain;
  } *ht;
};


struct HashElem {
  HashElem *next, *prev;
  void *data;
  const char *pKey;
};


void sqlite3HashInit(Hash*);
void *sqlite3HashInsert(Hash*, const char *pKey, void *pData);
void *sqlite3HashFind(const Hash*, const char *pKey);
void sqlite3HashClear(Hash*);
# 530 "src/sqliteInt.h" 2
# 1 "./parse.h" 1
# 531 "src/sqliteInt.h" 2
# 1 "/usr/local/google/home/eliben/eli/pycparser/utils/fake_libc_include/stdio.h" 1
# 1 "/usr/local/google/home/eliben/eli/pycparser/utils/fake_libc_include/_fake_defines.h" 1
# 2 "/usr/local/google/home/eliben/eli/pycparser/utils/fake_libc_include/stdio.h" 2
# 532 "src/sqliteInt.h" 2
# 1 "/usr/local/google/home/eliben/eli/pycparser/utils/fake_libc_include/stdlib.h" 1
# 1 "/usr/local/google/home/eliben/eli/pycparser/utils/fake_libc_include/_fake_defines.h" 1
# 2 "/usr/local/google/home/eliben/eli/pycparser/utils/fake_libc_include/stdlib.h" 2
# 533 "src/sqliteInt.h" 2
# 1 "/usr/local/google/home/eliben/eli/pycparser/utils/fake_libc_include/string.h" 1
# 1 "/usr/local/google/home/eliben/eli/pycparser/utils/fake_libc_include/_fake_defines.h" 1
# 2 "/usr/local/google/home/eliben/eli/pycparser/utils/fake_libc_include/string.h" 2
# 534 "src/sqliteInt.h" 2
# 1 "/usr/local/google/home/eliben/eli/pycparser/utils/fake_libc_include/assert.h" 1
# 1 "/usr/local/google/home/eliben/eli/pycparser/utils/fake_libc_include/_fake_defines.h" 1
# 2 "/usr/local/google/home/eliben/eli/pycparser/utils/fake_libc_include/assert.h" 2
# 535 "src/sqliteInt.h" 2
# 1 "/usr/local/google/home/eliben/eli/pycparser/utils/fake_libc_include/stddef.h" 1
# 1 "/usr/local/google/home/eliben/eli/pycparser/utils/fake_libc_include/_fake_defines.h" 1
# 2 "/usr/local/google/home/eliben/eli/pycparser/utils/fake_libc_include/stddef.h" 2
# 536 "src/sqliteInt.h" 2
# 734 "src/sqliteInt.h"
typedef sqlite_int64 i64;
typedef sqlite_uint64 u64;
typedef unsigned int u32;
typedef unsigned short int u16;
typedef short int i16;
typedef unsigned char u8;
typedef signed char i8;
# 759 "src/sqliteInt.h"
 typedef u32 tRowcnt;
# 785 "src/sqliteInt.h"
typedef short int LogEst;
# 809 "src/sqliteInt.h"
  typedef u64 uptr;
# 971 "src/sqliteInt.h"
typedef struct BusyHandler BusyHandler;
struct BusyHandler {
  int (*xBusyHandler)(void *,int);
  void *pBusyArg;
  int nBusy;
  u8 bExtraFileArg;
};
# 1066 "src/sqliteInt.h"
typedef struct AggInfo AggInfo;
typedef struct AuthContext AuthContext;
typedef struct AutoincInfo AutoincInfo;
typedef struct Bitvec Bitvec;
typedef struct CollSeq CollSeq;
typedef struct Column Column;
typedef struct Db Db;
typedef struct Schema Schema;
typedef struct Expr Expr;
typedef struct ExprList ExprList;
typedef struct FKey FKey;
typedef struct FuncDestructor FuncDestructor;
typedef struct FuncDef FuncDef;
typedef struct FuncDefHash FuncDefHash;
typedef struct IdList IdList;
typedef struct Index Index;
typedef struct IndexSample IndexSample;
typedef struct KeyClass KeyClass;
typedef struct KeyInfo KeyInfo;
typedef struct Lookaside Lookaside;
typedef struct LookasideSlot LookasideSlot;
typedef struct Module Module;
typedef struct NameContext NameContext;
typedef struct Parse Parse;
typedef struct PreUpdate PreUpdate;
typedef struct PrintfArguments PrintfArguments;
typedef struct RenameToken RenameToken;
typedef struct RowSet RowSet;
typedef struct Savepoint Savepoint;
typedef struct Select Select;
typedef struct SQLiteThread SQLiteThread;
typedef struct SelectDest SelectDest;
typedef struct SrcList SrcList;
typedef struct sqlite3_str StrAccum;
typedef struct Table Table;
typedef struct TableLock TableLock;
typedef struct Token Token;
typedef struct TreeView TreeView;
typedef struct Trigger Trigger;
typedef struct TriggerPrg TriggerPrg;
typedef struct TriggerStep TriggerStep;
typedef struct UnpackedRecord UnpackedRecord;
typedef struct Upsert Upsert;
typedef struct VTable VTable;
typedef struct VtabCtx VtabCtx;
typedef struct Walker Walker;
typedef struct WhereInfo WhereInfo;
typedef struct Window Window;
typedef struct With With;
# 1127 "src/sqliteInt.h"
  typedef u64 Bitmask;
# 1148 "src/sqliteInt.h"
typedef int VList;


# 1 "src/btree.h" 1
# 39 "src/btree.h"
typedef struct Btree Btree;
typedef struct BtCursor BtCursor;
typedef struct BtShared BtShared;
typedef struct BtreePayload BtreePayload;


int sqlite3BtreeOpen(
  sqlite3_vfs *pVfs,
  const char *zFilename,
  sqlite3 *db,
  Btree **ppBtree,
  int flags,
  int vfsFlags
);
# 65 "src/btree.h"
int sqlite3BtreeClose(Btree*);
int sqlite3BtreeSetCacheSize(Btree*,int);
int sqlite3BtreeSetSpillSize(Btree*,int);

  int sqlite3BtreeSetMmapLimit(Btree*,sqlite3_int64);

int sqlite3BtreeSetPagerFlags(Btree*,unsigned);
int sqlite3BtreeSetPageSize(Btree *p, int nPagesize, int nReserve, int eFix);
int sqlite3BtreeGetPageSize(Btree*);
int sqlite3BtreeMaxPageCount(Btree*,int);
u32 sqlite3BtreeLastPage(Btree*);
int sqlite3BtreeSecureDelete(Btree*,int);
int sqlite3BtreeGetOptimalReserve(Btree*);
int sqlite3BtreeGetReserveNoMutex(Btree *p);
int sqlite3BtreeSetAutoVacuum(Btree *, int);
int sqlite3BtreeGetAutoVacuum(Btree *);
int sqlite3BtreeBeginTrans(Btree*,int,int*);
int sqlite3BtreeCommitPhaseOne(Btree*, const char *zMaster);
int sqlite3BtreeCommitPhaseTwo(Btree*, int);
int sqlite3BtreeCommit(Btree*);
int sqlite3BtreeRollback(Btree*,int,int);
int sqlite3BtreeBeginStmt(Btree*,int);
int sqlite3BtreeCreateTable(Btree*, int*, int flags);
int sqlite3BtreeIsInTrans(Btree*);
int sqlite3BtreeIsInReadTrans(Btree*);
int sqlite3BtreeIsInBackup(Btree*);
void *sqlite3BtreeSchema(Btree *, int, void(*)(void *));
int sqlite3BtreeSchemaLocked(Btree *pBtree);

int sqlite3BtreeLockTable(Btree *pBtree, int iTab, u8 isWriteLock);

int sqlite3BtreeSavepoint(Btree *, int, int);

const char *sqlite3BtreeGetFilename(Btree *);
const char *sqlite3BtreeGetJournalname(Btree *);
int sqlite3BtreeCopyFile(Btree *, Btree *);

int sqlite3BtreeIncrVacuum(Btree *);
# 117 "src/btree.h"
int sqlite3BtreeDropTable(Btree*, int, int*);
int sqlite3BtreeClearTable(Btree*, int, int*);
int sqlite3BtreeClearTableOfCursor(BtCursor*);
int sqlite3BtreeTripAllCursors(Btree*, int, int);

void sqlite3BtreeGetMeta(Btree *pBtree, int idx, u32 *pValue);
int sqlite3BtreeUpdateMeta(Btree*, int idx, u32 value);

int sqlite3BtreeNewDb(Btree *p);
# 226 "src/btree.h"
int sqlite3BtreeCursor(
  Btree*,
  int iTable,
  int wrFlag,
  struct KeyInfo*,
  BtCursor *pCursor
);
BtCursor *sqlite3BtreeFakeValidCursor(void);
int sqlite3BtreeCursorSize(void);
void sqlite3BtreeCursorZero(BtCursor*);
void sqlite3BtreeCursorHintFlags(BtCursor*, unsigned);


int sqlite3BtreeCloseCursor(BtCursor*);
int sqlite3BtreeMovetoUnpacked(
  BtCursor*,
  UnpackedRecord *pUnKey,
  i64 intKey,
  int bias,
  int *pRes
);
int sqlite3BtreeCursorHasMoved(BtCursor*);
int sqlite3BtreeCursorRestore(BtCursor*, int*);
int sqlite3BtreeDelete(BtCursor*, u8 flags);
# 291 "src/btree.h"
struct BtreePayload {
  const void *pKey;
  sqlite3_int64 nKey;
  const void *pData;
  sqlite3_value *aMem;
  u16 nMem;
  int nData;
  int nZero;
};

int sqlite3BtreeInsert(BtCursor*, const BtreePayload *pPayload,
                       int flags, int seekResult);
int sqlite3BtreeFirst(BtCursor*, int *pRes);
int sqlite3BtreeLast(BtCursor*, int *pRes);
int sqlite3BtreeNext(BtCursor*, int flags);
int sqlite3BtreeEof(BtCursor*);
int sqlite3BtreePrevious(BtCursor*, int flags);
i64 sqlite3BtreeIntegerKey(BtCursor*);


int sqlite3BtreePayload(BtCursor*, u32 offset, u32 amt, void*);
const void *sqlite3BtreePayloadFetch(BtCursor*, u32 *pAmt);
u32 sqlite3BtreePayloadSize(BtCursor*);
sqlite3_int64 sqlite3BtreeMaxRecordSize(BtCursor*);

char *sqlite3BtreeIntegrityCheck(Btree*, int *aRoot, int nRoot, int, int*);
struct Pager *sqlite3BtreePager(Btree*);
i64 sqlite3BtreeRowCountEst(BtCursor*);


int sqlite3BtreePayloadChecked(BtCursor*, u32 offset, u32 amt, void*);
int sqlite3BtreePutData(BtCursor*, u32 offset, u32 amt, void*);
void sqlite3BtreeIncrblobCursor(BtCursor *);

void sqlite3BtreeClearCursor(BtCursor *);
int sqlite3BtreeSetVersion(Btree *pBt, int iVersion);
int sqlite3BtreeCursorHasHint(BtCursor*, unsigned int mask);
int sqlite3BtreeIsReadonly(Btree *pBt);
int sqlite3HeaderSizeBtree(void);


int sqlite3BtreeCursorIsValidNN(BtCursor*);


int sqlite3BtreeCount(BtCursor *, i64 *);
# 347 "src/btree.h"
  int sqlite3BtreeCheckpoint(Btree*, int, int *, int *);
# 356 "src/btree.h"
  void sqlite3BtreeEnter(Btree*);
  void sqlite3BtreeEnterAll(sqlite3*);
  int sqlite3BtreeSharable(Btree*);
  void sqlite3BtreeEnterCursor(BtCursor*);
  int sqlite3BtreeConnectionCount(Btree*);
# 370 "src/btree.h"
  void sqlite3BtreeLeave(Btree*);
  void sqlite3BtreeLeaveCursor(BtCursor*);
  void sqlite3BtreeLeaveAll(sqlite3*);
# 1156 "src/sqliteInt.h" 2
# 1 "src/vdbe.h" 1
# 20 "src/vdbe.h"
# 1 "/usr/local/google/home/eliben/eli/pycparser/utils/fake_libc_include/stdio.h" 1
# 1 "/usr/local/google/home/eliben/eli/pycparser/utils/fake_libc_include/_fake_defines.h" 1
# 2 "/usr/local/google/home/eliben/eli/pycparser/utils/fake_libc_include/stdio.h" 2
# 21 "src/vdbe.h" 2


typedef struct Vdbe Vdbe;


typedef struct sqlite3_value Mem;
typedef struct SubProgram SubProgram;


struct VdbeOp {
  u8 opcode;
  signed char p4type;
  u16 p5;
  int p1;
  int p2;
  int p3;
  union p4union {
    int i;
    void *p;
    char *z;
    i64 *pI64;
    double *pReal;
    FuncDef *pFunc;
    sqlite3_context *pCtx;
    CollSeq *pColl;
    Mem *pMem;
    VTable *pVtab;
    KeyInfo *pKeyInfo;
    int *ai;
    SubProgram *pProgram;
    Table *pTab;


    int (*xAdvance)(BtCursor *, int);
  } p4;
# 79 "src/vdbe.h"
};
typedef struct VdbeOp VdbeOp;


struct SubProgram {
  VdbeOp *aOp;
  int nOp;
  int nMem;
  int nCsr;
  u8 *aOnce;
  void *token;
  SubProgram *pNext;
};


struct VdbeOpList {
  u8 opcode;
  signed char p1;
  signed char p2;
  signed char p3;
};
typedef struct VdbeOpList VdbeOpList;
# 169 "src/vdbe.h"
# 1 "./opcodes.h" 1
# 170 "src/vdbe.h" 2
# 181 "src/vdbe.h"
Vdbe *sqlite3VdbeCreate(Parse*);
int sqlite3VdbeAddOp0(Vdbe*,int);
int sqlite3VdbeAddOp1(Vdbe*,int,int);
int sqlite3VdbeAddOp2(Vdbe*,int,int,int);
int sqlite3VdbeGoto(Vdbe*,int);
int sqlite3VdbeLoadString(Vdbe*,int,const char*);
void sqlite3VdbeMultiLoad(Vdbe*,int,const char*,...);
int sqlite3VdbeAddOp3(Vdbe*,int,int,int,int);
int sqlite3VdbeAddOp4(Vdbe*,int,int,int,int,const char *zP4,int);
int sqlite3VdbeAddOp4Dup8(Vdbe*,int,int,int,int,const u8*,int);
int sqlite3VdbeAddOp4Int(Vdbe*,int,int,int,int,int);
void sqlite3VdbeEndCoroutine(Vdbe*,int);
# 205 "src/vdbe.h"
VdbeOp *sqlite3VdbeAddOpList(Vdbe*, int nOp, VdbeOpList const *aOp,int iLineno);

  void sqlite3VdbeExplain(Parse*,u8,const char*,...);
  void sqlite3VdbeExplainPop(Parse*);
  int sqlite3VdbeExplainParent(Parse*);
# 224 "src/vdbe.h"
void sqlite3VdbeAddParseSchemaOp(Vdbe*,int,char*);
void sqlite3VdbeChangeOpcode(Vdbe*, u32 addr, u8);
void sqlite3VdbeChangeP1(Vdbe*, u32 addr, int P1);
void sqlite3VdbeChangeP2(Vdbe*, u32 addr, int P2);
void sqlite3VdbeChangeP3(Vdbe*, u32 addr, int P3);
void sqlite3VdbeChangeP5(Vdbe*, u16 P5);
void sqlite3VdbeJumpHere(Vdbe*, int addr);
int sqlite3VdbeChangeToNoop(Vdbe*, int addr);
int sqlite3VdbeDeletePriorOpcode(Vdbe*, u8 op);
void sqlite3VdbeChangeP4(Vdbe*, int addr, const char *zP4, int N);
void sqlite3VdbeAppendP4(Vdbe*, void *pP4, int p4type);
void sqlite3VdbeSetP4KeyInfo(Parse*, Index*);
void sqlite3VdbeUsesBtree(Vdbe*, int);
VdbeOp *sqlite3VdbeGetOp(Vdbe*, int);
int sqlite3VdbeMakeLabel(Parse*);
void sqlite3VdbeRunOnlyOnce(Vdbe*);
void sqlite3VdbeReusable(Vdbe*);
void sqlite3VdbeDelete(Vdbe*);
void sqlite3VdbeClearObject(sqlite3*,Vdbe*);
void sqlite3VdbeMakeReady(Vdbe*,Parse*);
int sqlite3VdbeFinalize(Vdbe*);
void sqlite3VdbeResolveLabel(Vdbe*, int);
int sqlite3VdbeCurrentAddr(Vdbe*);


void sqlite3VdbeResetStepResult(Vdbe*);
void sqlite3VdbeRewind(Vdbe*);
int sqlite3VdbeReset(Vdbe*);
void sqlite3VdbeSetNumCols(Vdbe*,int);
int sqlite3VdbeSetColName(Vdbe*, int, int, const char *, void(*)(void*));
void sqlite3VdbeCountChanges(Vdbe*);
sqlite3 *sqlite3VdbeDb(Vdbe*);
u8 sqlite3VdbePrepareFlags(Vdbe*);
void sqlite3VdbeSetSql(Vdbe*, const char *z, int n, u8);


void sqlite3VdbeSwap(Vdbe*,Vdbe*);
VdbeOp *sqlite3VdbeTakeOpArray(Vdbe*, int*, int*);
sqlite3_value *sqlite3VdbeGetBoundValue(Vdbe*, int, u8);
void sqlite3VdbeSetVarmask(Vdbe*, int);

  char *sqlite3VdbeExpandSql(Vdbe*, const char*);

int sqlite3MemCompare(const Mem*, const Mem*, const CollSeq*);
int sqlite3BlobCompare(const Mem*, const Mem*);

void sqlite3VdbeRecordUnpack(KeyInfo*,int,const void*,UnpackedRecord*);
int sqlite3VdbeRecordCompare(int,const void*,UnpackedRecord*);
int sqlite3VdbeRecordCompareWithSkip(int, const void *, UnpackedRecord *, int);
UnpackedRecord *sqlite3VdbeAllocUnpackedRecord(KeyInfo*);

typedef int (*RecordCompare)(int,const void*,UnpackedRecord*);
RecordCompare sqlite3VdbeFindCompare(UnpackedRecord*);


void sqlite3VdbeLinkSubProgram(Vdbe *, SubProgram *);


int sqlite3NotPureFunc(sqlite3_context*);
# 1157 "src/sqliteInt.h" 2
# 1 "src/pager.h" 1
# 33 "src/pager.h"
typedef u32 Pgno;


typedef struct Pager Pager;


typedef struct PgHdr DbPage;
# 116 "src/pager.h"
int sqlite3PagerOpen(
  sqlite3_vfs*,
  Pager **ppPager,
  const char*,
  int,
  int,
  int,
  void(*)(DbPage*)
);
int sqlite3PagerClose(Pager *pPager, sqlite3*);
int sqlite3PagerReadFileheader(Pager*, int, unsigned char*);


void sqlite3PagerSetBusyHandler(Pager*, int(*)(void *), void *);
int sqlite3PagerSetPagesize(Pager*, u32*, int);


int sqlite3PagerMaxPageCount(Pager*, int);
void sqlite3PagerSetCachesize(Pager*, int);
int sqlite3PagerSetSpillsize(Pager*, int);
void sqlite3PagerSetMmapLimit(Pager *, sqlite3_int64);
void sqlite3PagerShrink(Pager*);
void sqlite3PagerSetFlags(Pager*,unsigned);
int sqlite3PagerLockingMode(Pager *, int);
int sqlite3PagerSetJournalMode(Pager *, int);
int sqlite3PagerGetJournalMode(Pager*);
int sqlite3PagerOkToChangeJournalMode(Pager*);
i64 sqlite3PagerJournalSizeLimit(Pager *, i64);
sqlite3_backup **sqlite3PagerBackupPtr(Pager*);
int sqlite3PagerFlush(Pager*);


int sqlite3PagerGet(Pager *pPager, Pgno pgno, DbPage **ppPage, int clrFlag);
DbPage *sqlite3PagerLookup(Pager *pPager, Pgno pgno);
void sqlite3PagerRef(DbPage*);
void sqlite3PagerUnref(DbPage*);
void sqlite3PagerUnrefNotNull(DbPage*);
void sqlite3PagerUnrefPageOne(DbPage*);


int sqlite3PagerWrite(DbPage*);
void sqlite3PagerDontWrite(DbPage*);
int sqlite3PagerMovepage(Pager*,DbPage*,Pgno,int);
int sqlite3PagerPageRefcount(DbPage*);
void *sqlite3PagerGetData(DbPage *);
void *sqlite3PagerGetExtra(DbPage *);


void sqlite3PagerPagecount(Pager*, int*);
int sqlite3PagerBegin(Pager*, int exFlag, int);
int sqlite3PagerCommitPhaseOne(Pager*,const char *zMaster, int);
int sqlite3PagerExclusiveLock(Pager*);
int sqlite3PagerSync(Pager *pPager, const char *zMaster);
int sqlite3PagerCommitPhaseTwo(Pager*);
int sqlite3PagerRollback(Pager*);
int sqlite3PagerOpenSavepoint(Pager *pPager, int n);
int sqlite3PagerSavepoint(Pager *pPager, int op, int iSavepoint);
int sqlite3PagerSharedLock(Pager *pPager);


  int sqlite3PagerCheckpoint(Pager *pPager, sqlite3*, int, int*, int*);
  int sqlite3PagerWalSupported(Pager *pPager);
  int sqlite3PagerWalCallback(Pager *pPager);
  int sqlite3PagerOpenWal(Pager *pPager, int *pisOpen);
  int sqlite3PagerCloseWal(Pager *pPager, sqlite3*);
# 200 "src/pager.h"
u8 sqlite3PagerIsreadonly(Pager*);
u32 sqlite3PagerDataVersion(Pager*);


int sqlite3PagerMemUsed(Pager*);
const char *sqlite3PagerFilename(Pager*, int);
sqlite3_vfs *sqlite3PagerVfs(Pager*);
sqlite3_file *sqlite3PagerFile(Pager*);
sqlite3_file *sqlite3PagerJrnlFile(Pager*);
const char *sqlite3PagerJournalname(Pager*);
void *sqlite3PagerTempSpace(Pager*);
int sqlite3PagerIsMemdb(Pager*);
void sqlite3PagerCacheStat(Pager *, int, int, int *);
void sqlite3PagerClearCache(Pager*);
int sqlite3SectorSize(sqlite3_file *);


void sqlite3PagerTruncateImage(Pager*,Pgno);

void sqlite3PagerRekey(DbPage*, Pgno, u16);
# 1158 "src/sqliteInt.h" 2
# 1 "src/pcache.h" 1
# 18 "src/pcache.h"
typedef struct PgHdr PgHdr;
typedef struct PCache PCache;


struct PgHdr {
  sqlite3_pcache_page *pPage;
  void *pData;
  void *pExtra;
  PCache *pCache;
  PgHdr *pDirty;
  Pager *pPager;
  Pgno pgno;


  u16 flags;


  i16 nRef;
  PgHdr *pDirtyNext;
  PgHdr *pDirtyPrev;


};
# 62 "src/pcache.h"
int sqlite3PcacheInitialize(void);
void sqlite3PcacheShutdown(void);


void sqlite3PCacheBufferSetup(void *, int sz, int n);


int sqlite3PcacheOpen(
  int szPage,
  int szExtra,
  int bPurgeable,
  int (*xStress)(void*, PgHdr*),
  void *pStress,
  PCache *pToInit
);


int sqlite3PcacheSetPageSize(PCache *, int);


int sqlite3PcacheSize(void);


sqlite3_pcache_page *sqlite3PcacheFetch(PCache*, Pgno, int createFlag);
int sqlite3PcacheFetchStress(PCache*, Pgno, sqlite3_pcache_page**);
PgHdr *sqlite3PcacheFetchFinish(PCache*, Pgno, sqlite3_pcache_page *pPage);
void sqlite3PcacheRelease(PgHdr*);

void sqlite3PcacheDrop(PgHdr*);
void sqlite3PcacheMakeDirty(PgHdr*);
void sqlite3PcacheMakeClean(PgHdr*);
void sqlite3PcacheCleanAll(PCache*);
void sqlite3PcacheClearWritable(PCache*);


void sqlite3PcacheMove(PgHdr*, Pgno);


void sqlite3PcacheTruncate(PCache*, Pgno x);


PgHdr *sqlite3PcacheDirtyList(PCache*);


void sqlite3PcacheClose(PCache*);


void sqlite3PcacheClearSyncFlags(PCache *);


void sqlite3PcacheClear(PCache*);


int sqlite3PcacheRefCount(PCache*);


void sqlite3PcacheRef(PgHdr*);

int sqlite3PcachePageRefcount(PgHdr*);


int sqlite3PcachePagecount(PCache*);
# 153 "src/pcache.h"
void sqlite3PcacheSetCachesize(PCache *, int);
# 163 "src/pcache.h"
int sqlite3PcacheSetSpillsize(PCache *, int);


void sqlite3PcacheShrink(PCache*);
# 177 "src/pcache.h"
void sqlite3PCacheSetDefault(void);


int sqlite3HeaderSizePcache(void);
int sqlite3HeaderSizePcache1(void);


int sqlite3PCachePercentDirty(PCache*);
# 1159 "src/sqliteInt.h" 2
# 1 "src/os.h" 1
# 27 "src/os.h"
# 1 "src/os_setup.h" 1
# 28 "src/os.h" 2
# 158 "src/os.h"
int sqlite3OsInit(void);


void sqlite3OsClose(sqlite3_file*);
int sqlite3OsRead(sqlite3_file*, void*, int amt, i64 offset);
int sqlite3OsWrite(sqlite3_file*, const void*, int amt, i64 offset);
int sqlite3OsTruncate(sqlite3_file*, i64 size);
int sqlite3OsSync(sqlite3_file*, int);
int sqlite3OsFileSize(sqlite3_file*, i64 *pSize);
int sqlite3OsLock(sqlite3_file*, int);
int sqlite3OsUnlock(sqlite3_file*, int);
int sqlite3OsCheckReservedLock(sqlite3_file *id, int *pResOut);
int sqlite3OsFileControl(sqlite3_file*,int,void*);
void sqlite3OsFileControlHint(sqlite3_file*,int,void*);

int sqlite3OsSectorSize(sqlite3_file *id);
int sqlite3OsDeviceCharacteristics(sqlite3_file *id);

int sqlite3OsShmMap(sqlite3_file *,int,int,int,void volatile **);
int sqlite3OsShmLock(sqlite3_file *id, int, int, int);
void sqlite3OsShmBarrier(sqlite3_file *id);
int sqlite3OsShmUnmap(sqlite3_file *id, int);

int sqlite3OsFetch(sqlite3_file *id, i64, int, void **);
int sqlite3OsUnfetch(sqlite3_file *, i64, void *);


int sqlite3OsOpen(sqlite3_vfs *, const char *, sqlite3_file*, int, int *);
int sqlite3OsDelete(sqlite3_vfs *, const char *, int);
int sqlite3OsAccess(sqlite3_vfs *, const char *, int, int *pResOut);
int sqlite3OsFullPathname(sqlite3_vfs *, const char *, int, char *);

void *sqlite3OsDlOpen(sqlite3_vfs *, const char *);
void sqlite3OsDlError(sqlite3_vfs *, int, char *);
void (*sqlite3OsDlSym(sqlite3_vfs *, void *, const char *))(void);
void sqlite3OsDlClose(sqlite3_vfs *, void *);

int sqlite3OsRandomness(sqlite3_vfs *, int, char *);
int sqlite3OsSleep(sqlite3_vfs *, int);
int sqlite3OsGetLastError(sqlite3_vfs*);
int sqlite3OsCurrentTimeInt64(sqlite3_vfs *, sqlite3_int64*);


int sqlite3OsOpenMalloc(sqlite3_vfs *, const char *, sqlite3_file **, int,int*);
void sqlite3OsCloseFree(sqlite3_file *);
# 1160 "src/sqliteInt.h" 2
# 1 "src/mutex.h" 1
# 1161 "src/sqliteInt.h" 2
# 1200 "src/sqliteInt.h"
struct Db {
  char *zDbSName;
  Btree *pBt;
  u8 safety_level;
  u8 bSyncSet;
  Schema *pSchema;
};
# 1225 "src/sqliteInt.h"
struct Schema {
  int schema_cookie;
  int iGeneration;
  Hash tblHash;
  Hash idxHash;
  Hash trigHash;
  Hash fkeyHash;
  Table *pSeqTab;
  u8 file_format;
  u8 enc;
  u16 schemaFlags;
  int cache_size;
};
# 1289 "src/sqliteInt.h"
struct Lookaside {
  u32 bDisable;
  u16 sz;
  u8 bMalloced;
  u32 nSlot;
  u32 anStat[3];
  LookasideSlot *pInit;
  LookasideSlot *pFree;
  void *pStart;
  void *pEnd;
};
struct LookasideSlot {
  LookasideSlot *pNext;
};
# 1313 "src/sqliteInt.h"
struct FuncDefHash {
  FuncDef *a[23];
};
# 1352 "src/sqliteInt.h"
  typedef int (*sqlite3_xauth)(void*,int,const char*,const char*,const char*,
                               const char*);
# 1372 "src/sqliteInt.h"
struct sqlite3 {
  sqlite3_vfs *pVfs;
  struct Vdbe *pVdbe;
  CollSeq *pDfltColl;
  sqlite3_mutex *mutex;
  Db *aDb;
  int nDb;
  u32 mDbFlags;
  u64 flags;
  i64 lastRowid;
  i64 szMmap;
  u32 nSchemaLock;
  unsigned int openFlags;
  int errCode;
  int errMask;
  int iSysErrno;
  u16 dbOptFlags;
  u8 enc;
  u8 autoCommit;
  u8 temp_store;
  u8 mallocFailed;
  u8 bBenignMalloc;
  u8 dfltLockMode;
  signed char nextAutovac;
  u8 suppressErr;
  u8 vtabOnConflict;
  u8 isTransactionSavepoint;
  u8 mTrace;
  u8 noSharedCache;
  u8 nSqlExec;
  int nextPagesize;
  u32 magic;
  int nChange;
  int nTotalChange;
  int aLimit[(11 +1)];
  int nMaxSorterMmap;
  struct sqlite3InitInfo {
    int newTnum;
    u8 iDb;
    u8 busy;
    unsigned orphanTrigger : 1;
    unsigned imposterTable : 1;
    unsigned reopenMemdb : 1;
  } init;
  int nVdbeActive;
  int nVdbeRead;
  int nVdbeWrite;
  int nVdbeExec;
  int nVDestroy;
  int nExtension;
  void **aExtension;
  int (*xTrace)(u32,void*,void*,void*);
  void *pTraceArg;

  void (*xProfile)(void*,const char*,u64);
  void *pProfileArg;

  void *pCommitArg;
  int (*xCommitCallback)(void*);
  void *pRollbackArg;
  void (*xRollbackCallback)(void*);
  void *pUpdateArg;
  void (*xUpdateCallback)(void*,int, const char*,const char*,sqlite_int64);
  Parse *pParse;
# 1444 "src/sqliteInt.h"
  int (*xWalCallback)(void *, sqlite3 *, const char *, int);
  void *pWalArg;

  void(*xCollNeeded)(void*,sqlite3*,int eTextRep,const char*);
  void(*xCollNeeded16)(void*,sqlite3*,int eTextRep,const void*);
  void *pCollNeededArg;
  sqlite3_value *pErr;
  union {
    volatile int isInterrupted;
    double notUsed1;
  } u1;
  Lookaside lookaside;

  sqlite3_xauth xAuth;
  void *pAuthArg;


  int (*xProgress)(void *);
  void *pProgressArg;
  unsigned nProgressOps;


  int nVTrans;
  Hash aModule;
  VtabCtx *pVtabCtx;
  VTable **aVTrans;
  VTable *pDisconnect;

  Hash aFunc;
  Hash aCollSeq;
  BusyHandler busyHandler;
  Db aDbStatic[2];
  Savepoint *pSavepoint;
  int busyTimeout;
  int nSavepoint;
  int nStatement;
  i64 nDeferredCons;
  i64 nDeferredImmCons;
  int *pnBytesFreed;
# 1503 "src/sqliteInt.h"
};
# 1632 "src/sqliteInt.h"
struct FuncDef {
  i8 nArg;
  u32 funcFlags;
  void *pUserData;
  FuncDef *pNext;
  void (*xSFunc)(sqlite3_context*,int,sqlite3_value**);
  void (*xFinalize)(sqlite3_context*);
  void (*xValue)(sqlite3_context*);
  void (*xInverse)(sqlite3_context*,int,sqlite3_value**);
  const char *zName;
  union {
    FuncDef *pHash;
    FuncDestructor *pDestructor;
  } u;
};
# 1662 "src/sqliteInt.h"
struct FuncDestructor {
  int nRef;
  void (*xDestroy)(void *);
  void *pUserData;
};
# 1788 "src/sqliteInt.h"
struct Savepoint {
  char *zName;
  i64 nDeferredCons;
  i64 nDeferredImmCons;
  Savepoint *pNext;
};
# 1809 "src/sqliteInt.h"
struct Module {
  const sqlite3_module *pModule;
  const char *zName;
  void *pAux;
  void (*xDestroy)(void *);
  Table *pEpoTab;
};


struct Column {
  char *zName;
  Expr *pDflt;
  char *zColl;
  u8 notNull;
  char affinity;
  u8 szEst;
  u8 colFlags;
};
# 1848 "src/sqliteInt.h"
struct CollSeq {
  char *zName;
  u8 enc;
  void *pUser;
  int (*xCmp)(void*,int, const void*, int, const void*);
  void (*xDel)(void*);
};
# 1948 "src/sqliteInt.h"
struct VTable {
  sqlite3 *db;
  Module *pMod;
  sqlite3_vtab *pVtab;
  int nRef;
  u8 bConstraint;
  int iSavepoint;
  VTable *pNext;
};


struct Table {
  char *zName;
  Column *aCol;
  Index *pIndex;
  Select *pSelect;
  FKey *pFKey;
  char *zColAff;
  ExprList *pCheck;

  int tnum;
  u32 nTabRef;
  u32 tabFlags;
  i16 iPKey;
  i16 nCol;
  LogEst nRowLogEst;
  LogEst szTabRow;


  u8 keyConf;

  int addColOffset;


  int nModuleArg;
  char **azModuleArg;
  VTable *pVTable;

  Trigger *pTrigger;
  Schema *pSchema;
  Table *pNextZombie;
};
# 2078 "src/sqliteInt.h"
struct FKey {
  Table *pFrom;
  FKey *pNextFrom;
  char *zTo;
  FKey *pNextTo;
  FKey *pPrevTo;
  int nCol;

  u8 isDeferred;
  u8 aAction[2];
  Trigger *apTrigger[2];
  struct sColMap {
    int iFrom;
    char *zCol;
  } aCol[1];
};
# 2143 "src/sqliteInt.h"
struct KeyInfo {
  u32 nRef;
  u8 enc;
  u16 nKeyField;
  u16 nAllField;
  sqlite3 *db;
  u8 *aSortOrder;
  CollSeq *aColl[1];
};
# 2188 "src/sqliteInt.h"
struct UnpackedRecord {
  KeyInfo *pKeyInfo;
  Mem *aMem;
  u16 nField;
  i8 default_rc;
  u8 errCode;
  i8 r1;
  i8 r2;
  u8 eqSeen;
};
# 2234 "src/sqliteInt.h"
struct Index {
  char *zName;
  i16 *aiColumn;
  LogEst *aiRowLogEst;
  Table *pTable;
  char *zColAff;
  Index *pNext;
  Schema *pSchema;
  u8 *aSortOrder;
  const char **azColl;
  Expr *pPartIdxWhere;
  ExprList *aColExpr;
  int tnum;
  LogEst szIdxRow;
  u16 nKeyCol;
  u16 nColumn;
  u8 onError;
  unsigned idxType:2;
  unsigned bUnordered:1;
  unsigned uniqNotNull:1;
  unsigned isResized:1;
  unsigned isCovering:1;
  unsigned noSkipScan:1;
  unsigned hasStat1:1;
  unsigned bNoQuery:1;
  unsigned bAscKeyBug:1;
# 2268 "src/sqliteInt.h"
  Bitmask colNotIdxed;
};
# 2296 "src/sqliteInt.h"
struct IndexSample {
  void *p;
  int n;
  tRowcnt *anEq;
  tRowcnt *anLt;
  tRowcnt *anDLt;
};
# 2320 "src/sqliteInt.h"
struct Token {
  const char *z;
  unsigned int n;
};
# 2338 "src/sqliteInt.h"
struct AggInfo {
  u8 directMode;

  u8 useSortingIdx;

  int sortingIdx;
  int sortingIdxPTab;
  int nSortingColumn;
  int mnReg, mxReg;
  ExprList *pGroupBy;
  struct AggInfo_col {
    Table *pTab;
    int iTable;
    int iColumn;
    int iSorterColumn;
    int iMem;
    Expr *pExpr;
  } *aCol;
  int nColumn;
  int nAccumulator;


  struct AggInfo_func {
    Expr *pExpr;
    FuncDef *pFunc;
    int iMem;
    int iDistinct;
  } *aFunc;
  int nFunc;
};
# 2380 "src/sqliteInt.h"
typedef i16 ynVar;
# 2448 "src/sqliteInt.h"
struct Expr {
  u8 op;
  char affinity;
  u32 flags;
  union {
    char *zToken;
    int iValue;
  } u;


  Expr *pLeft;
  Expr *pRight;
  union {
    ExprList *pList;
    Select *pSelect;
  } x;


  int nHeight;

  int iTable;


  ynVar iColumn;


  i16 iAgg;
  i16 iRightJoinTable;
  u8 op2;


  AggInfo *pAggInfo;
  union {
    Table *pTab;

    Window *pWin;
    struct {
      int iAddr;
      int regReturn;
    } sub;
  } y;
};
# 2598 "src/sqliteInt.h"
struct ExprList {
  int nExpr;
  struct ExprList_item {
    Expr *pExpr;
    char *zName;
    char *zSpan;
    u8 sortOrder;
    unsigned done :1;
    unsigned bSpanIsTab :1;
    unsigned reusable :1;
    unsigned bSorterRef :1;
    union {
      struct {
        u16 iOrderByCol;
        u16 iAlias;
      } x;
      int iConstExprReg;
    } u;
  } a[1];
};
# 2634 "src/sqliteInt.h"
struct IdList {
  struct IdList_item {
    char *zName;
    int idx;
  } *a;
  int nId;
};
# 2661 "src/sqliteInt.h"
struct SrcList {
  int nSrc;
  u32 nAlloc;
  struct SrcList_item {
    Schema *pSchema;
    char *zDatabase;
    char *zName;
    char *zAlias;
    Table *pTab;
    Select *pSelect;
    int addrFillSub;
    int regReturn;
    int regResult;
    struct {
      u8 jointype;
      unsigned notIndexed :1;
      unsigned isIndexedBy :1;
      unsigned isTabFunc :1;
      unsigned isCorrelated :1;
      unsigned viaCoroutine :1;
      unsigned isRecursive :1;
    } fg;
    int iCursor;
    Expr *pOn;
    IdList *pUsing;
    Bitmask colUsed;
    union {
      char *zIndexedBy;
      ExprList *pFuncArg;
    } u1;
    Index *pIBIndex;
  } a[1];
};
# 2761 "src/sqliteInt.h"
struct NameContext {
  Parse *pParse;
  SrcList *pSrcList;
  union {
    ExprList *pEList;
    AggInfo *pAggInfo;
    Upsert *pUpsert;
  } uNC;
  NameContext *pNext;
  int nRef;
  int nErr;
  int ncFlags;
  Select *pWinSelect;
};
# 2815 "src/sqliteInt.h"
struct Upsert {
  ExprList *pUpsertTarget;
  Expr *pUpsertTargetWhere;
  ExprList *pUpsertSet;
  Expr *pUpsertWhere;


  Index *pUpsertIdx;
  SrcList *pUpsertSrc;
  int regData;
  int iDataCur;
  int iIdxCur;
};
# 2848 "src/sqliteInt.h"
struct Select {
  ExprList *pEList;
  u8 op;
  LogEst nSelectRow;
  u32 selFlags;
  int iLimit, iOffset;
  u32 selId;
  int addrOpenEphm[2];
  SrcList *pSrc;
  Expr *pWhere;
  ExprList *pGroupBy;
  Expr *pHaving;
  ExprList *pOrderBy;
  Select *pPrior;
  Select *pNext;
  Expr *pLimit;
  With *pWith;

  Window *pWin;
  Window *pWinDefn;

};
# 2987 "src/sqliteInt.h"
struct SelectDest {
  u8 eDest;
  int iSDParm;
  int iSdst;
  int nSdst;
  char *zAffSdst;
  ExprList *pOrderBy;
};
# 3005 "src/sqliteInt.h"
struct AutoincInfo {
  AutoincInfo *pNext;
  Table *pTab;
  int iDb;
  int regCtr;
};
# 3030 "src/sqliteInt.h"
struct TriggerPrg {
  Trigger *pTrigger;
  TriggerPrg *pNext;
  SubProgram *pProgram;
  int orconf;
  u32 aColmask[2];
};
# 3049 "src/sqliteInt.h"
  typedef unsigned int yDbMask;
# 3073 "src/sqliteInt.h"
struct Parse {
  sqlite3 *db;
  char *zErrMsg;
  Vdbe *pVdbe;
  int rc;
  u8 colNamesSet;
  u8 checkSchema;
  u8 nested;
  u8 nTempReg;
  u8 isMultiWrite;
  u8 mayAbort;
  u8 hasCompound;
  u8 okConstFactor;
  u8 disableLookaside;
  u8 disableVtab;
  int nRangeReg;
  int iRangeReg;
  int nErr;
  int nTab;
  int nMem;
  int szOpAlloc;
  int iSelfTab;

  int nLabel;
  int nLabelAlloc;
  int *aLabel;
  ExprList *pConstExpr;
  Token constraintName;
  yDbMask writeMask;
  yDbMask cookieMask;
  int regRowid;
  int regRoot;
  int nMaxArg;
  int nSelect;

  int nTableLock;
  TableLock *aTableLock;

  AutoincInfo *pAinc;
  Parse *pToplevel;
  Table *pTriggerTab;
  Parse *pParentParse;
  int addrCrTab;
  u32 nQueryLoop;
  u32 oldmask;
  u32 newmask;
  u8 eTriggerOp;
  u8 eOrconf;
  u8 disableTriggers;
# 3130 "src/sqliteInt.h"
  int aTempReg[8];
  Token sNameToken;
# 3140 "src/sqliteInt.h"
  Token sLastToken;
  ynVar nVar;
  u8 iPkSortOrder;
  u8 explain;

  u8 eParseMode;


  int nVtabLock;

  int nHeight;

  int addrExplain;

  VList *pVList;
  Vdbe *pReprepare;
  const char *zTail;
  Table *pNewTable;
  Index *pNewIndex;


  Trigger *pNewTrigger;
  const char *zAuthContext;

  Token sArg;
  Table **apVtabLock;

  Table *pZombieTab;
  TriggerPrg *pTriggerPrg;
  With *pWith;
  With *pWithToFree;

  RenameToken *pRename;

};
# 3214 "src/sqliteInt.h"
struct AuthContext {
  const char *zAuthContext;
  Parse *pParse;
};
# 3266 "src/sqliteInt.h"
struct Trigger {
  char *zName;
  char *table;
  u8 op;
  u8 tr_tm;
  Expr *pWhen;
  IdList *pColumns;

  Schema *pSchema;
  Schema *pTabSchema;
  TriggerStep *step_list;
  Trigger *pNext;
};
# 3328 "src/sqliteInt.h"
struct TriggerStep {
  u8 op;
  u8 orconf;
  Trigger *pTrig;
  Select *pSelect;
  char *zTarget;
  Expr *pWhere;
  ExprList *pExprList;
  IdList *pIdList;
  Upsert *pUpsert;
  char *zSpan;
  TriggerStep *pNext;
  TriggerStep *pLast;
};


typedef struct DbFixer DbFixer;
struct DbFixer {
  Parse *pParse;
  Schema *pSchema;
  int bVarOnly;
  const char *zDb;
  const char *zType;
  const Token *pName;
};


struct sqlite3_str {
  sqlite3 *db;
  char *zText;
  u32 nAlloc;
  u32 mxAlloc;
  u32 nChar;
  u8 accError;
  u8 printfFlags;
};
# 3382 "src/sqliteInt.h"
typedef struct {
  sqlite3 *db;
  char **pzErrMsg;
  int iDb;
  int rc;
  u32 mInitFlags;
  u32 nInitRow;
} InitData;
# 3401 "src/sqliteInt.h"
struct Sqlite3Config {
  int bMemstat;
  int bCoreMutex;
  int bFullMutex;
  int bOpenUri;
  int bUseCis;
  int bSmallMalloc;
  int mxStrlen;
  int neverCorrupt;
  int szLookaside;
  int nLookaside;
  int nStmtSpill;
  sqlite3_mem_methods m;
  sqlite3_mutex_methods mutex;
  sqlite3_pcache_methods2 pcache2;
  void *pHeap;
  int nHeap;
  int mnReq, mxReq;
  sqlite3_int64 szMmap;
  sqlite3_int64 mxMmap;
  void *pPage;
  int szPage;
  int nPage;
  int mxParserStack;
  int sharedCacheEnabled;
  u32 szPma;


  int isInit;
  int inProgress;
  int isMutexInit;
  int isMallocInit;
  int isPCacheInit;
  int nRefInitMutex;
  sqlite3_mutex *pInitMutex;
  void (*xLog)(void*,int,const char*);
  void *pLogArg;
# 3453 "src/sqliteInt.h"
  int (*xTestCallback)(int);

  int bLocaltimeFault;
  int bInternalFunctions;
  int iOnceResetThreshold;
  u32 szSorterRef;
};
# 3482 "src/sqliteInt.h"
struct Walker {
  Parse *pParse;
  int (*xExprCallback)(Walker*, Expr*);
  int (*xSelectCallback)(Walker*,Select*);
  void (*xSelectCallback2)(Walker*,Select*);
  int walkerDepth;
  u8 eCode;
  union {
    NameContext *pNC;
    int n;
    int iCur;
    SrcList *pSrcList;
    struct SrcCount *pSrcCount;
    struct CCurHint *pCCurHint;
    int *aiCol;
    struct IdxCover *pIdxCover;
    struct IdxExprTrans *pIdxTrans;
    ExprList *pGroupBy;
    Select *pSelect;
    struct WindowRewrite *pRewrite;
    struct WhereConst *pConst;
    struct RenameCtx *pRename;
  } u;
};


int sqlite3WalkExpr(Walker*, Expr*);
int sqlite3WalkExprList(Walker*, ExprList*);
int sqlite3WalkSelect(Walker*, Select*);
int sqlite3WalkSelectExpr(Walker*, Select*);
int sqlite3WalkSelectFrom(Walker*, Select*);
int sqlite3ExprWalkNoop(Walker*, Expr*);
int sqlite3SelectWalkNoop(Walker*, Select*);
int sqlite3SelectWalkFail(Walker*, Select*);
# 3532 "src/sqliteInt.h"
struct With {
  int nCte;
  With *pOuter;
  struct Cte {
    char *zName;
    ExprList *pCols;
    Select *pSelect;
    const char *zCteErr;
  } a[1];
};
# 3572 "src/sqliteInt.h"
struct Window {
  char *zName;
  char *zBase;
  ExprList *pPartition;
  ExprList *pOrderBy;
  u8 eFrmType;
  u8 eStart;
  u8 eEnd;
  u8 bImplicitFrame;
  u8 eExclude;
  Expr *pStart;
  Expr *pEnd;
  Window *pNextWin;
  Expr *pFilter;
  FuncDef *pFunc;
  int iEphCsr;
  int regAccum;
  int regResult;
  int csrApp;
  int regApp;
  int regPart;
  Expr *pOwner;
  int nBufferCol;
  int iArgCol;
  int regOne;
  int regStartRowid;
  int regEndRowid;
};


void sqlite3WindowDelete(sqlite3*, Window*);
void sqlite3WindowListDelete(sqlite3 *db, Window *p);
Window *sqlite3WindowAlloc(Parse*, int, int, Expr*, int , Expr*, u8);
void sqlite3WindowAttach(Parse*, Expr*, Window*);
int sqlite3WindowCompare(Parse*, Window*, Window*);
void sqlite3WindowCodeInit(Parse*, Window*);
void sqlite3WindowCodeStep(Parse*, Select*, WhereInfo*, int, int);
int sqlite3WindowRewrite(Parse*, Select*);
int sqlite3ExpandSubquery(Parse*, struct SrcList_item*);
void sqlite3WindowUpdate(Parse*, Window*, Window*, FuncDef*);
Window *sqlite3WindowDup(sqlite3 *db, Expr *pOwner, Window *p);
Window *sqlite3WindowListDup(sqlite3 *db, Window *p);
void sqlite3WindowFunctions(void);
void sqlite3WindowChain(Parse*, Window*, Window*);
Window *sqlite3WindowAssemble(Parse*, Window*, ExprList*, ExprList*, Token*);
# 3640 "src/sqliteInt.h"
int sqlite3ReportError(int iErr, int lineno, const char *zType);
int sqlite3CorruptError(int);
int sqlite3MisuseError(int);
int sqlite3CantopenError(int);
# 3710 "src/sqliteInt.h"
int sqlite3IsIdChar(u8);


int sqlite3StrICmp(const char*,const char*);
int sqlite3Strlen30(const char*);

char *sqlite3ColumnType(Column*,char*);


int sqlite3MallocInit(void);
void sqlite3MallocEnd(void);
void *sqlite3Malloc(u64);
void *sqlite3MallocZero(u64);
void *sqlite3DbMallocZero(sqlite3*, u64);
void *sqlite3DbMallocRaw(sqlite3*, u64);
void *sqlite3DbMallocRawNN(sqlite3*, u64);
char *sqlite3DbStrDup(sqlite3*,const char*);
char *sqlite3DbStrNDup(sqlite3*,const char*, u64);
char *sqlite3DbSpanDup(sqlite3*,const char*,const char*);
void *sqlite3Realloc(void*, u64);
void *sqlite3DbReallocOrFree(sqlite3 *, void *, u64);
void *sqlite3DbRealloc(sqlite3 *, void *, u64);
void sqlite3DbFree(sqlite3*, void*);
void sqlite3DbFreeNN(sqlite3*, void*);
int sqlite3MallocSize(void*);
int sqlite3DbMallocSize(sqlite3*, void*);
void *sqlite3PageMalloc(int);
void sqlite3PageFree(void*);
void sqlite3MemSetDefault(void);

void sqlite3BenignMallocHooks(void (*)(void), void (*)(void));

int sqlite3HeapNearlyFull(void);
# 3777 "src/sqliteInt.h"
  sqlite3_mutex_methods const *sqlite3DefaultMutex(void);
  sqlite3_mutex_methods const *sqlite3NoopMutex(void);
  sqlite3_mutex *sqlite3MutexAlloc(int);
  int sqlite3MutexInit(void);
  int sqlite3MutexEnd(void);


  void sqlite3MemoryBarrier(void);


sqlite3_int64 sqlite3StatusValue(int);
void sqlite3StatusUp(int, int);
void sqlite3StatusDown(int, int);
void sqlite3StatusHighwater(int, int);
int sqlite3LookasideUsed(sqlite3*,int*);


sqlite3_mutex *sqlite3Pcache1Mutex(void);
sqlite3_mutex *sqlite3MallocMutex(void);
# 3809 "src/sqliteInt.h"
  int sqlite3IsNaN(double);
# 3819 "src/sqliteInt.h"
struct PrintfArguments {
  int nArg;
  int nUsed;
  sqlite3_value **apArg;
};

char *sqlite3MPrintf(sqlite3*,const char*, ...);
char *sqlite3VMPrintf(sqlite3*,const char*, va_list);
# 3848 "src/sqliteInt.h"
void sqlite3SetString(char **, sqlite3*, const char*);
void sqlite3ErrorMsg(Parse*, const char*, ...);
int sqlite3ErrorToParser(sqlite3*,int);
void sqlite3Dequote(char*);
void sqlite3DequoteExpr(Expr*);
void sqlite3TokenInit(Token*,char*);
int sqlite3KeywordCode(const unsigned char*, int);
int sqlite3RunParser(Parse*, const char*, char **);
void sqlite3FinishCoding(Parse*);
int sqlite3GetTempReg(Parse*);
void sqlite3ReleaseTempReg(Parse*,int);
int sqlite3GetTempRange(Parse*,int);
void sqlite3ReleaseTempRange(Parse*,int,int);
void sqlite3ClearTempRegCache(Parse*);


Expr *sqlite3ExprAlloc(sqlite3*,int,const Token*,int);
Expr *sqlite3Expr(sqlite3*,int,const char*);
void sqlite3ExprAttachSubtrees(sqlite3*,Expr*,Expr*,Expr*);
Expr *sqlite3PExpr(Parse*, int, Expr*, Expr*);
void sqlite3PExprAddSelect(Parse*, Expr*, Select*);
Expr *sqlite3ExprAnd(Parse*,Expr*, Expr*);
Expr *sqlite3ExprSimplifiedAndOr(Expr*);
Expr *sqlite3ExprFunction(Parse*,ExprList*, Token*, int);
void sqlite3ExprAssignVarNumber(Parse*, Expr*, u32);
void sqlite3ExprDelete(sqlite3*, Expr*);
void sqlite3ExprUnmapAndDelete(Parse*, Expr*);
ExprList *sqlite3ExprListAppend(Parse*,ExprList*,Expr*);
ExprList *sqlite3ExprListAppendVector(Parse*,ExprList*,IdList*,Expr*);
void sqlite3ExprListSetSortOrder(ExprList*,int);
void sqlite3ExprListSetName(Parse*,ExprList*,Token*,int);
void sqlite3ExprListSetSpan(Parse*,ExprList*,const char*,const char*);
void sqlite3ExprListDelete(sqlite3*, ExprList*);
u32 sqlite3ExprListFlags(const ExprList*);
int sqlite3IndexHasDuplicateRootPage(Index*);
int sqlite3Init(sqlite3*, char**);
int sqlite3InitCallback(void*, int, char**, char**);
int sqlite3InitOne(sqlite3*, int, char**, u32);
void sqlite3Pragma(Parse*,Token*,Token*,Token*,int);

Module *sqlite3PragmaVtabRegister(sqlite3*,const char *zName);

void sqlite3ResetAllSchemasOfConnection(sqlite3*);
void sqlite3ResetOneSchema(sqlite3*,int);
void sqlite3CollapseDatabaseArray(sqlite3*);
void sqlite3CommitInternalChanges(sqlite3*);
void sqlite3DeleteColumnNames(sqlite3*,Table*);
int sqlite3ColumnsFromExprList(Parse*,ExprList*,i16*,Column**);
void sqlite3SelectAddColumnTypeAndCollation(Parse*,Table*,Select*);
Table *sqlite3ResultSetOfSelect(Parse*,Select*);
void sqlite3OpenMasterTable(Parse *, int);
Index *sqlite3PrimaryKeyIndex(Table*);
i16 sqlite3ColumnOfIndex(Index*, i16);
void sqlite3StartTable(Parse*,Token*,Token*,int,int,int,int);


void sqlite3AddColumn(Parse*,Token*,Token*);
void sqlite3AddNotNull(Parse*, int);
void sqlite3AddPrimaryKey(Parse*, ExprList*, int, int, int);
void sqlite3AddCheckConstraint(Parse*, Expr*);
void sqlite3AddDefaultValue(Parse*,Expr*,const char*,const char*);
void sqlite3AddCollateType(Parse*, Token*);
void sqlite3EndTable(Parse*,Token*,Token*,u8,Select*);
int sqlite3ParseUri(const char*,const char*,unsigned int*,
                    sqlite3_vfs**,char**,char **);


Btree *sqlite3DbNameToBtree(sqlite3*,const char*);


  int sqlite3FaultSim(int);


Bitvec *sqlite3BitvecCreate(u32);
int sqlite3BitvecTest(Bitvec*, u32);
int sqlite3BitvecTestNotNull(Bitvec*, u32);
int sqlite3BitvecSet(Bitvec*, u32);
void sqlite3BitvecClear(Bitvec*, u32, void*);
void sqlite3BitvecDestroy(Bitvec*);
u32 sqlite3BitvecSize(Bitvec*);

int sqlite3BitvecBuiltinTest(int,int*);


RowSet *sqlite3RowSetInit(sqlite3*);
void sqlite3RowSetDelete(void*);
void sqlite3RowSetClear(void*);
void sqlite3RowSetInsert(RowSet*, i64);
int sqlite3RowSetTest(RowSet*, int iBatch, i64);
int sqlite3RowSetNext(RowSet*, i64*);

void sqlite3CreateView(Parse*,Token*,Token*,Token*,ExprList*,Select*,int,int);


  int sqlite3ViewGetColumnNames(Parse*,Table*);


void sqlite3DropTable(Parse*, SrcList*, int, int);
void sqlite3CodeDropTable(Parse*, Table*, int, int);
void sqlite3DeleteTable(sqlite3*, Table*);
void sqlite3FreeIndex(sqlite3*, Index*);

  void sqlite3AutoincrementBegin(Parse *pParse);
  void sqlite3AutoincrementEnd(Parse *pParse);


void sqlite3Insert(Parse*, SrcList*, Select*, IdList*, int, Upsert*);
void *sqlite3ArrayAllocate(sqlite3*,void*,int,int*,int*);
IdList *sqlite3IdListAppend(Parse*, IdList*, Token*);
int sqlite3IdListIndex(IdList*,const char*);
SrcList *sqlite3SrcListEnlarge(Parse*, SrcList*, int, int);
SrcList *sqlite3SrcListAppend(Parse*, SrcList*, Token*, Token*);
SrcList *sqlite3SrcListAppendFromTerm(Parse*, SrcList*, Token*, Token*,
                                      Token*, Select*, Expr*, IdList*);
void sqlite3SrcListIndexedBy(Parse *, SrcList *, Token *);
void sqlite3SrcListFuncArgs(Parse*, SrcList*, ExprList*);
int sqlite3IndexedByLookup(Parse *, struct SrcList_item *);
void sqlite3SrcListShiftJoinType(SrcList*);
void sqlite3SrcListAssignCursors(Parse*, SrcList*);
void sqlite3IdListDelete(sqlite3*, IdList*);
void sqlite3SrcListDelete(sqlite3*, SrcList*);
Index *sqlite3AllocateIndexObject(sqlite3*,i16,int,char**);
void sqlite3CreateIndex(Parse*,Token*,Token*,SrcList*,ExprList*,int,Token*,
                          Expr*, int, int, u8);
void sqlite3DropIndex(Parse*, SrcList*, int);
int sqlite3Select(Parse*, Select*, SelectDest*);
Select *sqlite3SelectNew(Parse*,ExprList*,SrcList*,Expr*,ExprList*,
                         Expr*,ExprList*,u32,Expr*);
void sqlite3SelectDelete(sqlite3*, Select*);
Table *sqlite3SrcListLookup(Parse*, SrcList*);
int sqlite3IsReadOnly(Parse*, Table*, int);
void sqlite3OpenTable(Parse*, int iCur, int iDb, Table*, int);


void sqlite3DeleteFrom(Parse*, SrcList*, Expr*, ExprList*, Expr*);
void sqlite3Update(Parse*, SrcList*, ExprList*,Expr*,int,ExprList*,Expr*,
                   Upsert*);
WhereInfo *sqlite3WhereBegin(Parse*,SrcList*,Expr*,ExprList*,ExprList*,u16,int);
void sqlite3WhereEnd(WhereInfo*);
LogEst sqlite3WhereOutputRowCount(WhereInfo*);
int sqlite3WhereIsDistinct(WhereInfo*);
int sqlite3WhereIsOrdered(WhereInfo*);
int sqlite3WhereOrderByLimitOptLabel(WhereInfo*);
int sqlite3WhereIsSorted(WhereInfo*);
int sqlite3WhereContinueLabel(WhereInfo*);
int sqlite3WhereBreakLabel(WhereInfo*);
int sqlite3WhereOkOnePass(WhereInfo*, int*);


void sqlite3ExprCodeLoadIndexColumn(Parse*, Index*, int, int, int);
int sqlite3ExprCodeGetColumn(Parse*, Table*, int, int, int, u8);
void sqlite3ExprCodeGetColumnOfTable(Vdbe*, Table*, int, int, int);
void sqlite3ExprCodeMove(Parse*, int, int, int);
void sqlite3ExprCode(Parse*, Expr*, int);
void sqlite3ExprCodeCopy(Parse*, Expr*, int);
void sqlite3ExprCodeFactorable(Parse*, Expr*, int);
int sqlite3ExprCodeAtInit(Parse*, Expr*, int);
int sqlite3ExprCodeTemp(Parse*, Expr*, int*);
int sqlite3ExprCodeTarget(Parse*, Expr*, int);
void sqlite3ExprCodeAndCache(Parse*, Expr*, int);
int sqlite3ExprCodeExprList(Parse*, ExprList*, int, int, u8);


void sqlite3ExprIfTrue(Parse*, Expr*, int, int);
void sqlite3ExprIfFalse(Parse*, Expr*, int, int);
void sqlite3ExprIfFalseDup(Parse*, Expr*, int, int);
Table *sqlite3FindTable(sqlite3*,const char*, const char*);


Table *sqlite3LocateTable(Parse*,u32 flags,const char*, const char*);
Table *sqlite3LocateTableItem(Parse*,u32 flags,struct SrcList_item *);
Index *sqlite3FindIndex(sqlite3*,const char*, const char*);
void sqlite3UnlinkAndDeleteTable(sqlite3*,int,const char*);
void sqlite3UnlinkAndDeleteIndex(sqlite3*,int,const char*);
void sqlite3Vacuum(Parse*,Token*,Expr*);
int sqlite3RunVacuum(char**, sqlite3*, int, sqlite3_value*);
char *sqlite3NameFromToken(sqlite3*, Token*);
int sqlite3ExprCompare(Parse*,Expr*, Expr*, int);
int sqlite3ExprCompareSkip(Expr*, Expr*, int);
int sqlite3ExprListCompare(ExprList*, ExprList*, int);
int sqlite3ExprImpliesExpr(Parse*,Expr*, Expr*, int);
int sqlite3ExprImpliesNonNullRow(Expr*,int);
void sqlite3ExprAnalyzeAggregates(NameContext*, Expr*);
void sqlite3ExprAnalyzeAggList(NameContext*,ExprList*);
int sqlite3ExprCoveredByIndex(Expr*, int iCur, Index *pIdx);
int sqlite3FunctionUsesThisSrc(Expr*, SrcList*);
Vdbe *sqlite3GetVdbe(Parse*);

void sqlite3PrngSaveState(void);
void sqlite3PrngRestoreState(void);

void sqlite3RollbackAll(sqlite3*,int);
void sqlite3CodeVerifySchema(Parse*, int);
void sqlite3CodeVerifyNamedSchema(Parse*, const char *zDb);
void sqlite3BeginTransaction(Parse*, int);
void sqlite3EndTransaction(Parse*,int);
void sqlite3Savepoint(Parse*, int, Token*);
void sqlite3CloseSavepoints(sqlite3 *);
void sqlite3LeaveMutexAndCloseZombie(sqlite3*);
int sqlite3ExprIdToTrueFalse(Expr*);
int sqlite3ExprTruthValue(const Expr*);
int sqlite3ExprIsConstant(Expr*);
int sqlite3ExprIsConstantNotJoin(Expr*);
int sqlite3ExprIsConstantOrFunction(Expr*, u8);
int sqlite3ExprIsConstantOrGroupBy(Parse*, Expr*, ExprList*);
int sqlite3ExprIsTableConstant(Expr*,int);


int sqlite3ExprIsInteger(Expr*, int*);
int sqlite3ExprCanBeNull(const Expr*);
int sqlite3ExprNeedsNoAffinityChange(const Expr*, char);
int sqlite3IsRowid(const char*);
void sqlite3GenerateRowDelete(
    Parse*,Table*,Trigger*,int,int,int,i16,u8,u8,u8,int);
void sqlite3GenerateRowIndexDelete(Parse*, Table*, int, int, int*, int);
int sqlite3GenerateIndexKey(Parse*, Index*, int, int, int, int*,Index*,int);
void sqlite3ResolvePartIdxLabel(Parse*,int);
int sqlite3ExprReferencesUpdatedColumn(Expr*,int*,int);
void sqlite3GenerateConstraintChecks(Parse*,Table*,int*,int,int,int,int,
                                     u8,u8,int,int*,int*,Upsert*);


void sqlite3CompleteInsertion(Parse*,Table*,int,int,int,int*,int,int,int);
int sqlite3OpenTableAndIndices(Parse*, Table*, int, u8, int, u8*, int*, int*);
void sqlite3BeginWriteOperation(Parse*, int, int);
void sqlite3MultiWrite(Parse*);
void sqlite3MayAbort(Parse*);
void sqlite3HaltConstraint(Parse*, int, int, char*, i8, u8);
void sqlite3UniqueConstraint(Parse*, int, Index*);
void sqlite3RowidConstraint(Parse*, int, Table*);
Expr *sqlite3ExprDup(sqlite3*,Expr*,int);
ExprList *sqlite3ExprListDup(sqlite3*,ExprList*,int);
SrcList *sqlite3SrcListDup(sqlite3*,SrcList*,int);
IdList *sqlite3IdListDup(sqlite3*,IdList*);
Select *sqlite3SelectDup(sqlite3*,Select*,int);
FuncDef *sqlite3FunctionSearch(int,const char*);
void sqlite3InsertBuiltinFuncs(FuncDef*,int);
FuncDef *sqlite3FindFunction(sqlite3*,const char*,int,u8,u8);
void sqlite3RegisterBuiltinFunctions(void);
void sqlite3RegisterDateTimeFunctions(void);
void sqlite3RegisterPerConnectionBuiltinFunctions(sqlite3*);
int sqlite3SafetyCheckOk(sqlite3*);
int sqlite3SafetyCheckSickOrOk(sqlite3*);
void sqlite3ChangeCookie(Parse*, int);


void sqlite3MaterializeView(Parse*, Table*, Expr*, ExprList*,Expr*,int);


  void sqlite3BeginTrigger(Parse*, Token*,Token*,int,int,IdList*,SrcList*,
                           Expr*,int, int);
  void sqlite3FinishTrigger(Parse*, TriggerStep*, Token*);
  void sqlite3DropTrigger(Parse*, SrcList*, int);
  void sqlite3DropTriggerPtr(Parse*, Trigger*);
  Trigger *sqlite3TriggersExist(Parse *, Table*, int, ExprList*, int *pMask);
  Trigger *sqlite3TriggerList(Parse *, Table *);
  void sqlite3CodeRowTrigger(Parse*, Trigger *, int, ExprList*, int, Table *,
                            int, int, int);
  void sqlite3CodeRowTriggerDirect(Parse *, Trigger *, Table *, int, int, int);
  void sqliteViewTriggers(Parse*, Table*, Expr*, int, ExprList*);
  void sqlite3DeleteTriggerStep(sqlite3*, TriggerStep*);
  TriggerStep *sqlite3TriggerSelectStep(sqlite3*,Select*,
                                        const char*,const char*);
  TriggerStep *sqlite3TriggerInsertStep(Parse*,Token*, IdList*,
                                        Select*,u8,Upsert*,
                                        const char*,const char*);
  TriggerStep *sqlite3TriggerUpdateStep(Parse*,Token*,ExprList*, Expr*, u8,
                                        const char*,const char*);
  TriggerStep *sqlite3TriggerDeleteStep(Parse*,Token*, Expr*,
                                        const char*,const char*);
  void sqlite3DeleteTrigger(sqlite3*, Trigger*);
  void sqlite3UnlinkAndDeleteTrigger(sqlite3*,int,const char*);
  u32 sqlite3TriggerColmask(Parse*,Trigger*,ExprList*,int,int,Table*,int);
# 4161 "src/sqliteInt.h"
int sqlite3JoinType(Parse*, Token*, Token*, Token*);
void sqlite3CreateForeignKey(Parse*, ExprList*, Token*, ExprList*, int);
void sqlite3DeferForeignKey(Parse*, int);

  void sqlite3AuthRead(Parse*,Expr*,Schema*,SrcList*);
  int sqlite3AuthCheck(Parse*,int, const char*, const char*, const char*);
  void sqlite3AuthContextPush(Parse*, AuthContext*, const char*);
  void sqlite3AuthContextPop(AuthContext*);
  int sqlite3AuthReadCol(Parse*, const char *, const char *, int);


void sqlite3Attach(Parse*, Expr*, Expr*, Expr*);
void sqlite3Detach(Parse*, Expr*);
void sqlite3FixInit(DbFixer*, Parse*, int, const char*, const Token*);
int sqlite3FixSrcList(DbFixer*, SrcList*);
int sqlite3FixSelect(DbFixer*, Select*);
int sqlite3FixExpr(DbFixer*, Expr*);
int sqlite3FixExprList(DbFixer*, ExprList*);
int sqlite3FixTriggerStep(DbFixer*, TriggerStep*);
int sqlite3RealSameAsInt(double,sqlite3_int64);
int sqlite3AtoF(const char *z, double*, int, u8);
int sqlite3GetInt32(const char *, int*);
int sqlite3Atoi(const char*);

int sqlite3Utf16ByteLen(const void *pData, int nChar);

int sqlite3Utf8CharLen(const char *pData, int nByte);
u32 sqlite3Utf8Read(const u8**);
LogEst sqlite3LogEst(u64);
LogEst sqlite3LogEstAdd(LogEst,LogEst);

LogEst sqlite3LogEstFromDouble(double);


VList *sqlite3VListAdd(sqlite3*,VList*,const char*,int,int);
const char *sqlite3VListNumToName(VList*,int);
int sqlite3VListNameToNum(VList*,const char*,int);


int sqlite3PutVarint(unsigned char*, u64);
u8 sqlite3GetVarint(const unsigned char *, u64 *);
u8 sqlite3GetVarint32(const unsigned char *, u32 *);
int sqlite3VarintLen(u64 v);
# 4231 "src/sqliteInt.h"
const char *sqlite3IndexAffinityStr(sqlite3*, Index*);
void sqlite3TableAffinity(Vdbe*, Table*, int);
char sqlite3CompareAffinity(Expr *pExpr, char aff2);
int sqlite3IndexAffinityOk(Expr *pExpr, char idx_affinity);
char sqlite3TableColumnAffinity(Table*,int);
char sqlite3ExprAffinity(Expr *pExpr);
int sqlite3Atoi64(const char*, i64*, int, u8);
int sqlite3DecOrHexToI64(const char*, i64*);
void sqlite3ErrorWithMsg(sqlite3*, int, const char*,...);
void sqlite3Error(sqlite3*,int);
void sqlite3SystemError(sqlite3*,int);
void *sqlite3HexToBlob(sqlite3*, const char *z, int n);
u8 sqlite3HexToInt(int h);
int sqlite3TwoPartName(Parse *, Token *, Token *, Token **);
# 4254 "src/sqliteInt.h"
const char *sqlite3ErrStr(int);
int sqlite3ReadSchema(Parse *pParse);
CollSeq *sqlite3FindCollSeq(sqlite3*,u8 enc, const char*,int);
int sqlite3IsBinary(const CollSeq*);
CollSeq *sqlite3LocateCollSeq(Parse *pParse, const char*zName);
CollSeq *sqlite3ExprCollSeq(Parse *pParse, Expr *pExpr);
CollSeq *sqlite3ExprNNCollSeq(Parse *pParse, Expr *pExpr);
int sqlite3ExprCollSeqMatch(Parse*,Expr*,Expr*);
Expr *sqlite3ExprAddCollateToken(Parse *pParse, Expr*, const Token*, int);
Expr *sqlite3ExprAddCollateString(Parse*,Expr*,const char*);
Expr *sqlite3ExprSkipCollate(Expr*);
int sqlite3CheckCollSeq(Parse *, CollSeq *);
int sqlite3WritableSchema(sqlite3*);
int sqlite3CheckObjectName(Parse *, const char *);
void sqlite3VdbeSetChanges(sqlite3 *, int);
int sqlite3AddInt64(i64*,i64);
int sqlite3SubInt64(i64*,i64);
int sqlite3MulInt64(i64*,i64);
int sqlite3AbsInt32(int);


u8 sqlite3GetBoolean(const char *z,u8);

const void *sqlite3ValueText(sqlite3_value*, u8);
int sqlite3ValueBytes(sqlite3_value*, u8);
void sqlite3ValueSetStr(sqlite3_value*, int, const void *,u8,
                        void(*)(void*));
void sqlite3ValueSetNull(sqlite3_value*);
void sqlite3ValueFree(sqlite3_value*);

void sqlite3ResultIntReal(sqlite3_context*);

sqlite3_value *sqlite3ValueNew(sqlite3 *);

char *sqlite3Utf16to8(sqlite3 *, const void*, int, u8);

int sqlite3ValueFromExpr(sqlite3 *, Expr *, u8, u8, sqlite3_value **);
void sqlite3ValueApplyAffinity(sqlite3_value *, u8, u8);

extern const unsigned char sqlite3OpcodeProperty[];
extern const char sqlite3StrBINARY[];
extern const unsigned char sqlite3UpperToLower[];
extern const unsigned char sqlite3CtypeMap[];
extern const Token sqlite3IntTokens[];
extern struct Sqlite3Config sqlite3Config;
extern FuncDefHash sqlite3BuiltinFunctions;

extern int sqlite3PendingByte;


void sqlite3RootPageMoved(sqlite3*, int, int, int);
void sqlite3Reindex(Parse*, Token*, Token*);
void sqlite3AlterFunctions(void);
void sqlite3AlterRenameTable(Parse*, SrcList*, Token*);
void sqlite3AlterRenameColumn(Parse*, SrcList*, Token*, Token*);
int sqlite3GetToken(const unsigned char *, int *);
void sqlite3NestedParse(Parse*, const char*, ...);
void sqlite3ExpirePreparedStatements(sqlite3*, int);
void sqlite3CodeRhsOfIN(Parse*, Expr*, int);
int sqlite3CodeSubselect(Parse*, Expr*);
void sqlite3SelectPrep(Parse*, Select*, NameContext*);
void sqlite3SelectWrongNumTermsError(Parse *pParse, Select *p);
int sqlite3MatchSpanName(const char*, const char*, const char*, const char*);
int sqlite3ResolveExprNames(NameContext*, Expr*);
int sqlite3ResolveExprListNames(NameContext*, ExprList*);
void sqlite3ResolveSelectNames(Parse*, Select*, NameContext*);
int sqlite3ResolveSelfReference(Parse*,Table*,int,Expr*,ExprList*);
int sqlite3ResolveOrderGroupBy(Parse*, Select*, ExprList*, const char*);
void sqlite3ColumnDefault(Vdbe *, Table *, int, int);
void sqlite3AlterFinishAddColumn(Parse *, Token *);
void sqlite3AlterBeginAddColumn(Parse *, SrcList *);
void *sqlite3RenameTokenMap(Parse*, void*, Token*);
void sqlite3RenameTokenRemap(Parse*, void *pTo, void *pFrom);
void sqlite3RenameExprUnmap(Parse*, Expr*);
void sqlite3RenameExprlistUnmap(Parse*, ExprList*);
CollSeq *sqlite3GetCollSeq(Parse*, u8, CollSeq *, const char*);
char sqlite3AffinityType(const char*, Column*);
void sqlite3Analyze(Parse*, Token*, Token*);
int sqlite3InvokeBusyHandler(BusyHandler*, sqlite3_file*);
int sqlite3FindDb(sqlite3*, Token*);
int sqlite3FindDbName(sqlite3 *, const char *);
int sqlite3AnalysisLoad(sqlite3*,int iDB);
void sqlite3DeleteIndexSamples(sqlite3*,Index*);
void sqlite3DefaultRowEst(Index*);
void sqlite3RegisterLikeFunctions(sqlite3*, int);
int sqlite3IsLikeFunction(sqlite3*,Expr*,int*,char*);
void sqlite3SchemaClear(void *);
Schema *sqlite3SchemaGet(sqlite3 *, Btree *);
int sqlite3SchemaToIndex(sqlite3 *db, Schema *);
KeyInfo *sqlite3KeyInfoAlloc(sqlite3*,int,int);
void sqlite3KeyInfoUnref(KeyInfo*);
KeyInfo *sqlite3KeyInfoRef(KeyInfo*);
KeyInfo *sqlite3KeyInfoOfIndex(Parse*, Index*);
KeyInfo *sqlite3KeyInfoFromExprList(Parse*, ExprList*, int, int);


int sqlite3CreateFunc(sqlite3 *, const char *, int, int, void *,
  void (*)(sqlite3_context*,int,sqlite3_value **),
  void (*)(sqlite3_context*,int,sqlite3_value **),
  void (*)(sqlite3_context*),
  void (*)(sqlite3_context*),
  void (*)(sqlite3_context*,int,sqlite3_value **),
  FuncDestructor *pDestructor
);
void sqlite3NoopDestructor(void*);
void sqlite3OomFault(sqlite3*);
void sqlite3OomClear(sqlite3*);
int sqlite3ApiExit(sqlite3 *db, int);
int sqlite3OpenTempDatabase(Parse *);

void sqlite3StrAccumInit(StrAccum*, sqlite3*, char*, int, int);
char *sqlite3StrAccumFinish(StrAccum*);
void sqlite3SelectDestInit(SelectDest*,int,int);
Expr *sqlite3CreateColumnExpr(sqlite3 *, SrcList *, int, int);

void sqlite3BackupRestart(sqlite3_backup *);
void sqlite3BackupUpdate(sqlite3_backup *, Pgno, const u8 *);


int sqlite3ExprCheckIN(Parse*, Expr*);
# 4400 "src/sqliteInt.h"
  void *sqlite3ParserAlloc(void*(*)(u64), Parse*);
  void sqlite3ParserFree(void*, void(*)(void*));

void sqlite3Parser(void*, int, Token);
int sqlite3ParserFallback(int);


void sqlite3AutoLoadExtensions(sqlite3*);

  void sqlite3CloseExtensions(sqlite3*);


  void sqlite3TableLock(Parse *, int, int, u8, const char *);
# 4438 "src/sqliteInt.h"
   void sqlite3VtabClear(sqlite3 *db, Table*);
   void sqlite3VtabDisconnect(sqlite3 *db, Table *p);
   int sqlite3VtabSync(sqlite3 *db, Vdbe*);
   int sqlite3VtabRollback(sqlite3 *db);
   int sqlite3VtabCommit(sqlite3 *db);
   void sqlite3VtabLock(VTable *);
   void sqlite3VtabUnlock(VTable *);
   void sqlite3VtabUnlockList(sqlite3*);
   int sqlite3VtabSavepoint(sqlite3 *, int, int);
   void sqlite3VtabImportErrmsg(Vdbe*, sqlite3_vtab*);
   VTable *sqlite3GetVTable(sqlite3*, Table*);
   Module *sqlite3VtabCreateModule(
     sqlite3*,
     const char*,
     const sqlite3_module*,
     void*,
     void(*)(void*)
   );


int sqlite3VtabEponymousTableInit(Parse*,Module*);
void sqlite3VtabEponymousTableClear(sqlite3*,Module*);
void sqlite3VtabMakeWritable(Parse*,Table*);
void sqlite3VtabBeginParse(Parse*, Token*, Token*, Token*, int);
void sqlite3VtabFinishParse(Parse*, Token*);
void sqlite3VtabArgInit(Parse*);
void sqlite3VtabArgExtend(Parse*, Token*);
int sqlite3VtabCallCreate(sqlite3*, int, const char *, char **);
int sqlite3VtabCallConnect(Parse*, Table*);
int sqlite3VtabCallDestroy(sqlite3*, int, const char *);
int sqlite3VtabBegin(sqlite3 *, VTable *);
FuncDef *sqlite3VtabOverloadFunction(sqlite3 *,FuncDef*, int nArg, Expr*);
sqlite3_int64 sqlite3StmtCurrentTime(sqlite3_context*);
int sqlite3VdbeParameterIndex(Vdbe*, const char*, int);
int sqlite3TransferBindings(sqlite3_stmt *, sqlite3_stmt *);
void sqlite3ParserReset(Parse*);


int sqlite3Reprepare(Vdbe*);
void sqlite3ExprListCheckLength(Parse*, ExprList*, const char*);
CollSeq *sqlite3BinaryCompareCollSeq(Parse *, Expr *, Expr *);
int sqlite3TempInMemory(const sqlite3*);
const char *sqlite3JournalModename(int);

  int sqlite3Checkpoint(sqlite3*, int, int, int*, int*);
  int sqlite3WalDefaultHook(void*,sqlite3*,const char*,int);


  With *sqlite3WithAdd(Parse*,With*,Token*,ExprList*,Select*);
  void sqlite3WithDelete(sqlite3*,With*);
  void sqlite3WithPush(Parse*, With*, u8);


  Upsert *sqlite3UpsertNew(sqlite3*,ExprList*,Expr*,ExprList*,Expr*);
  void sqlite3UpsertDelete(sqlite3*,Upsert*);
  Upsert *sqlite3UpsertDup(sqlite3*,Upsert*);
  int sqlite3UpsertAnalyzeTarget(Parse*,SrcList*,Upsert*);
  void sqlite3UpsertDoUpdate(Parse*,Upsert*,Table*,Index*,int);
# 4515 "src/sqliteInt.h"
  void sqlite3FkCheck(Parse*, Table*, int, int, int*, int);
  void sqlite3FkDropTable(Parse*, SrcList *, Table*);
  void sqlite3FkActions(Parse*, Table*, ExprList*, int, int*, int);
  int sqlite3FkRequired(Parse*, Table*, int*, int);
  u32 sqlite3FkOldmask(Parse*, Table*);
  FKey *sqlite3FkReferences(Table *);
# 4530 "src/sqliteInt.h"
  void sqlite3FkDelete(sqlite3 *, Table*);
  int sqlite3FkLocateIndex(Parse*,Table*,FKey*,Index**,int**);
# 4550 "src/sqliteInt.h"
  void sqlite3BeginBenignMalloc(void);
  void sqlite3EndBenignMalloc(void);
# 4571 "src/sqliteInt.h"
int sqlite3FindInIndex(Parse *, Expr *, u32, int*, int*, int*);

int sqlite3JournalOpen(sqlite3_vfs *, const char *, sqlite3_file *, int, int);
int sqlite3JournalSize(sqlite3_vfs *);


int sqlite3JournalIsInMemory(sqlite3_file *p);
void sqlite3MemJournalOpen(sqlite3_file *);

void sqlite3ExprSetHeightAndFlags(Parse *pParse, Expr *p);

  int sqlite3SelectExprHeight(Select *);
  int sqlite3ExprCheckHeight(Parse*, int);


u32 sqlite3Get4byte(const u8*);
void sqlite3Put4byte(u8*, u32);
# 4671 "src/sqliteInt.h"
int sqlite3ThreadCreate(SQLiteThread**,void*(*)(void*),void*);
int sqlite3ThreadJoin(SQLiteThread*, void**);
# 4682 "src/sqliteInt.h"
int sqlite3ExprVectorSize(Expr *pExpr);
int sqlite3ExprIsVector(Expr *pExpr);
Expr *sqlite3VectorFieldSubexpr(Expr*, int);
Expr *sqlite3ExprForVectorField(Parse*,Expr*,int);
void sqlite3VectorErrorMsg(Parse*, Expr*);


const char **sqlite3CompileOptions(int *pnOpt);
# 217 "src/btreeInt.h" 2
# 232 "src/btreeInt.h"
typedef struct MemPage MemPage;
typedef struct BtLock BtLock;
typedef struct CellInfo CellInfo;
# 273 "src/btreeInt.h"
struct MemPage {
  u8 isInit;
  u8 bBusy;
  u8 intKey;
  u8 intKeyLeaf;
  Pgno pgno;


  u8 leaf;
  u8 hdrOffset;
  u8 childPtrSize;
  u8 max1bytePayload;
  u8 nOverflow;
  u16 maxLocal;
  u16 minLocal;
  u16 cellOffset;
  int nFree;
  u16 nCell;
  u16 maskPage;
  u16 aiOvfl[4];

  u8 *apOvfl[4];
  BtShared *pBt;
  u8 *aData;
  u8 *aDataEnd;
  u8 *aCellIdx;
  u8 *aDataOfst;
  DbPage *pDbPage;
  u16 (*xCellSize)(MemPage*,u8*);
  void (*xParseCell)(MemPage*,u8*,CellInfo*);
};
# 312 "src/btreeInt.h"
struct BtLock {
  Btree *pBtree;
  Pgno iTable;
  u8 eLock;
  BtLock *pNext;
};
# 344 "src/btreeInt.h"
struct Btree {
  sqlite3 *db;
  BtShared *pBt;
  u8 inTrans;
  u8 sharable;
  u8 locked;
  u8 hasIncrblobCur;
  int wantToLock;
  int nBackup;
  u32 iDataVersion;
  Btree *pNext;
  Btree *pPrev;

  BtLock lock;

};
# 407 "src/btreeInt.h"
struct BtShared {
  Pager *pPager;
  sqlite3 *db;
  BtCursor *pCursor;
  MemPage *pPage1;
  u8 openFlags;

  u8 autoVacuum;
  u8 incrVacuum;
  u8 bDoTruncate;

  u8 inTransaction;
  u8 max1bytePayload;


  u16 btsFlags;
  u16 maxLocal;
  u16 minLocal;
  u16 maxLeaf;
  u16 minLeaf;
  u32 pageSize;
  u32 usableSize;
  int nTransaction;
  u32 nPage;
  void *pSchema;
  void (*xFreeSchema)(void*);
  sqlite3_mutex *mutex;
  Bitvec *pHasContent;

  int nRef;
  BtShared *pNext;
  BtLock *pLock;
  Btree *pWriter;

  u8 *pTmpSpace;
};
# 463 "src/btreeInt.h"
struct CellInfo {
  i64 nKey;
  u8 *pPayload;
  u32 nPayload;
  u16 nLocal;
  u16 nSize;
};
# 508 "src/btreeInt.h"
struct BtCursor {
  u8 eState;
  u8 curFlags;
  u8 curPagerFlags;
  u8 hints;
  int skipNext;

  Btree *pBtree;
  Pgno *aOverflow;
  void *pKey;


  BtShared *pBt;
  BtCursor *pNext;
  CellInfo info;
  i64 nKey;
  Pgno pgnoRoot;
  i8 iPage;
  u8 curIntKey;
  u16 ix;
  u16 aiIdx[20 -1];
  struct KeyInfo *pKeyInfo;
  MemPage *pPage;
  MemPage *apPage[20 -1];
};
# 675 "src/btreeInt.h"
typedef struct IntegrityCk IntegrityCk;
struct IntegrityCk {
  BtShared *pBt;
  Pager *pPager;
  u8 *aPgRef;
  Pgno nPage;
  int mxErr;
  int nErr;
  int mallocFailed;
  const char *zPfx;
  int v1, v2;
  StrAccum errMsg;
  u32 *heap;
};
# 17 "src/btree.c" 2


static const char zMagicHeader[] = "SQLite format 3";
# 77 "src/btree.c"
static BtShared * sqlite3SharedCacheList = 0;
# 89 "src/btree.c"
int sqlite3_enable_shared_cache(int enable){
  sqlite3Config.sharedCacheEnabled = enable;
  return 0;
}
# 275 "src/btree.c"
static int querySharedCacheTableLock(Btree *p, Pgno iTab, u8 eLock){
  BtShared *pBt = p->pBt;
  BtLock *pIter;

  assert( sqlite3BtreeHoldsMutex(p) );
  assert( eLock==1 || eLock==2 );
  assert( p->db!=0 );
  assert( !(p->db->flags&0x00000400)||eLock==2||iTab==1 );


  assert( eLock==1 || (p==pBt->pWriter && p->inTrans==2) );
  assert( eLock==1 || pBt->inTransaction==2 );


  if( !p->sharable ){
    return 0;
  }


  if( pBt->pWriter!=p && (pBt->btsFlags & 0x0040)!=0 ){
    ;
    return (6 | (1<<8));
  }

  for(pIter=pBt->pLock; pIter; pIter=pIter->pNext){
# 314 "src/btree.c"
    assert( pIter->eLock==1 || pIter->eLock==2 );
    assert( eLock==1 || pIter->pBtree==p || pIter->eLock==1);
    if( pIter->pBtree!=p && pIter->iTable==iTab && pIter->eLock!=eLock ){
      ;
      if( eLock==2 ){
        assert( p==pBt->pWriter );
        pBt->btsFlags |= 0x0080;
      }
      return (6 | (1<<8));
    }
  }
  return 0;
}
# 347 "src/btree.c"
static int setSharedCacheTableLock(Btree *p, Pgno iTable, u8 eLock){
  BtShared *pBt = p->pBt;
  BtLock *pLock = 0;
  BtLock *pIter;

  assert( sqlite3BtreeHoldsMutex(p) );
  assert( eLock==1 || eLock==2 );
  assert( p->db!=0 );


  assert( 0==(p->db->flags&0x00000400) || eLock==2 );


  assert( p->sharable );
  assert( 0==querySharedCacheTableLock(p, iTable, eLock) );


  for(pIter=pBt->pLock; pIter; pIter=pIter->pNext){
    if( pIter->iTable==iTable && pIter->pBtree==p ){
      pLock = pIter;
      break;
    }
  }


  if( !pLock ){
    pLock = (BtLock *)sqlite3MallocZero(sizeof(BtLock));
    if( !pLock ){
      return 7;
    }
    pLock->iTable = iTable;
    pLock->pBtree = p;
    pLock->pNext = pBt->pLock;
    pBt->pLock = pLock;
  }


  assert( 2>1 );
  if( eLock>pLock->eLock ){
    pLock->eLock = eLock;
  }

  return 0;
}
# 411 "src/btree.c"
static void clearAllSharedCacheTableLocks(Btree *p){
  BtShared *pBt = p->pBt;
  BtLock **ppIter = &pBt->pLock;

  assert( sqlite3BtreeHoldsMutex(p) );
  assert( p->sharable || 0==*ppIter );
  assert( p->inTrans>0 );

  while( *ppIter ){
    BtLock *pLock = *ppIter;
    assert( (pBt->btsFlags & 0x0040)==0 || pBt->pWriter==pLock->pBtree );
    assert( pLock->pBtree->inTrans>=pLock->eLock );
    if( pLock->pBtree==p ){
      *ppIter = pLock->pNext;
      assert( pLock->iTable!=1 || pLock==&p->lock );
      if( pLock->iTable!=1 ){
        sqlite3_free(pLock);
      }
    }else{
      ppIter = &pLock->pNext;
    }
  }

  assert( (pBt->btsFlags & 0x0080)==0 || pBt->pWriter );
  if( pBt->pWriter==p ){
    pBt->pWriter = 0;
    pBt->btsFlags &= ~(0x0040|0x0080);
  }else if( pBt->nTransaction==2 ){
# 448 "src/btree.c"
    pBt->btsFlags &= ~0x0080;
  }
}


static void downgradeAllSharedCacheTableLocks(Btree *p){
  BtShared *pBt = p->pBt;
  if( pBt->pWriter==p ){
    BtLock *pLock;
    pBt->pWriter = 0;
    pBt->btsFlags &= ~(0x0040|0x0080);
    for(pLock=pBt->pLock; pLock; pLock=pLock->pNext){
      assert( pLock->eLock==1 || pLock->pBtree==p );
      pLock->eLock = 1;
    }
  }
}


static void releasePage(MemPage *pPage);
static void releasePageOne(MemPage *pPage);
static void releasePageNotNull(MemPage *pPage);
# 508 "src/btree.c"
static void invalidateAllOverflowCache(BtShared *pBt){
  BtCursor *p;
  assert( sqlite3_mutex_held(pBt->mutex) );
  for(p=pBt->pCursor; p; p=p->pNext){
    (p->curFlags &= ~0x04);
  }
}
# 530 "src/btree.c"
static void invalidateIncrblobCursors(
  Btree *pBtree,
  Pgno pgnoRoot,
  i64 iRow,
  int isClearTable
){
  BtCursor *p;
  if( pBtree->hasIncrblobCur==0 ) return;
  assert( sqlite3BtreeHoldsMutex(pBtree) );
  pBtree->hasIncrblobCur = 0;
  for(p=pBtree->pBt->pCursor; p; p=p->pNext){
    if( (p->curFlags & 0x10)!=0 ){
      pBtree->hasIncrblobCur = 1;
      if( p->pgnoRoot==pgnoRoot && (isClearTable || p->info.nKey==iRow) ){
        p->eState = 1;
      }
    }
  }
}
# 590 "src/btree.c"
static int btreeSetHasContent(BtShared *pBt, Pgno pgno){
  int rc = 0;
  if( !pBt->pHasContent ){
    assert( pgno<=pBt->nPage );
    pBt->pHasContent = sqlite3BitvecCreate(pBt->nPage);
    if( !pBt->pHasContent ){
      rc = 7;
    }
  }
  if( rc==0 && pgno<=sqlite3BitvecSize(pBt->pHasContent) ){
    rc = sqlite3BitvecSet(pBt->pHasContent, pgno);
  }
  return rc;
}
# 612 "src/btree.c"
static int btreeGetHasContent(BtShared *pBt, Pgno pgno){
  Bitvec *p = pBt->pHasContent;
  return (p && (pgno>sqlite3BitvecSize(p) || sqlite3BitvecTest(p, pgno)));
}


static void btreeClearHasContent(BtShared *pBt){
  sqlite3BitvecDestroy(pBt->pHasContent);
  pBt->pHasContent = 0;
}


static void btreeReleaseAllCursorPages(BtCursor *pCur){
  int i;
  if( pCur->iPage>=0 ){
    for(i=0; i<pCur->iPage; i++){
      releasePageNotNull(pCur->apPage[i]);
    }
    releasePageNotNull(pCur->pPage);
    pCur->iPage = -1;
  }
}
# 653 "src/btree.c"
static int saveCursorKey(BtCursor *pCur){
  int rc = 0;
  assert( 0==pCur->eState );
  assert( 0==pCur->pKey );
  assert( cursorHoldsMutex(pCur) );

  if( pCur->curIntKey ){

    pCur->nKey = sqlite3BtreeIntegerKey(pCur);
  }else{


    void *pKey;
    pCur->nKey = sqlite3BtreePayloadSize(pCur);
    pKey = sqlite3Malloc( pCur->nKey + 9 + 8 );
    if( pKey ){
      rc = sqlite3BtreePayload(pCur, 0, (int)pCur->nKey, pKey);
      if( rc==0 ){
        memset(((u8*)pKey)+pCur->nKey, 0, 9+8);
        pCur->pKey = pKey;
      }else{
        sqlite3_free(pKey);
      }
    }else{
      rc = 7;
    }
  }
  assert( !pCur->curIntKey || !pCur->pKey );
  return rc;
}
# 695 "src/btree.c"
static int saveCursorPosition(BtCursor *pCur){
  int rc;

  assert( 0==pCur->eState || 2==pCur->eState );
  assert( 0==pCur->pKey );
  assert( cursorHoldsMutex(pCur) );

  if( pCur->eState==2 ){
    pCur->eState = 0;
  }else{
    pCur->skipNext = 0;
  }

  rc = saveCursorKey(pCur);
  if( rc==0 ){
    btreeReleaseAllCursorPages(pCur);
    pCur->eState = 3;
  }

  pCur->curFlags &= ~(0x02|0x04|0x08);
  return rc;
}


static int saveCursorsOnList(BtCursor*,Pgno,BtCursor*);
# 742 "src/btree.c"
static int saveAllCursors(BtShared *pBt, Pgno iRoot, BtCursor *pExcept){
  BtCursor *p;
  assert( sqlite3_mutex_held(pBt->mutex) );
  assert( pExcept==0 || pExcept->pBt==pBt );
  for(p=pBt->pCursor; p; p=p->pNext){
    if( p!=pExcept && (0==iRoot || p->pgnoRoot==iRoot) ) break;
  }
  if( p ) return saveCursorsOnList(p, iRoot, pExcept);
  if( pExcept ) pExcept->curFlags &= ~0x20;
  return 0;
}


static int saveCursorsOnList(
  BtCursor *p,
  Pgno iRoot,
  BtCursor *pExcept
){
  do{
    if( p!=pExcept && (0==iRoot || p->pgnoRoot==iRoot) ){
      if( p->eState==0 || p->eState==2 ){
        int rc = saveCursorPosition(p);
        if( 0!=rc ){
          return rc;
        }
      }else{
        ;
        btreeReleaseAllCursorPages(p);
      }
    }
    p = p->pNext;
  }while( p );
  return 0;
}


void sqlite3BtreeClearCursor(BtCursor *pCur){
  assert( cursorHoldsMutex(pCur) );
  sqlite3_free(pCur->pKey);
  pCur->pKey = 0;
  pCur->eState = 1;
}


static int btreeMoveto(
  BtCursor *pCur,
  const void *pKey,
  i64 nKey,
  int bias,
  int *pRes
){
  int rc;
  UnpackedRecord *pIdxKey;

  if( pKey ){
    KeyInfo *pKeyInfo = pCur->pKeyInfo;
    assert( nKey==(i64)(int)nKey );
    pIdxKey = sqlite3VdbeAllocUnpackedRecord(pKeyInfo);
    if( pIdxKey==0 ) return 7;
    sqlite3VdbeRecordUnpack(pKeyInfo, (int)nKey, pKey, pIdxKey);
    if( pIdxKey->nField==0 || pIdxKey->nField>pKeyInfo->nAllField ){
      rc = sqlite3CorruptError(813);
      goto moveto_done;
    }
  }else{
    pIdxKey = 0;
  }
  rc = sqlite3BtreeMovetoUnpacked(pCur, pIdxKey, nKey, bias, pRes);
moveto_done:
  if( pIdxKey ){
    sqlite3DbFree(pCur->pKeyInfo->db, pIdxKey);
  }
  return rc;
}
# 834 "src/btree.c"
static int btreeRestoreCursorPosition(BtCursor *pCur){
  int rc;
  int skipNext = 0;
  assert( cursorOwnsBtShared(pCur) );
  assert( pCur->eState>=3 );
  if( pCur->eState==4 ){
    return pCur->skipNext;
  }
  pCur->eState = 1;
  if( sqlite3FaultSim(410) ){
    rc = 10;
  }else{
    rc = btreeMoveto(pCur, pCur->pKey, pCur->nKey, 0, &skipNext);
  }
  if( rc==0 ){
    sqlite3_free(pCur->pKey);
    pCur->pKey = 0;
    assert( pCur->eState==0 || pCur->eState==1 );
    if( skipNext ) pCur->skipNext = skipNext;
    if( pCur->skipNext && pCur->eState==0 ){
      pCur->eState = 2;
    }
  }
  return rc;
}
# 877 "src/btree.c"
int sqlite3BtreeCursorHasMoved(BtCursor *pCur){
  assert( ((((char*)(pCur) - (char*)0)&7)==0)
       || pCur==sqlite3BtreeFakeValidCursor() );
  assert( ((int)((char*)&((BtCursor*)0)->eState))==0 );
  assert( sizeof(pCur->eState)==1 );
  return 0 != *(u8*)pCur;
}


BtCursor *sqlite3BtreeFakeValidCursor(void){
  static u8 fakeCursor = 0;
  assert( ((int)((char*)&((BtCursor*)0)->eState))==0 );
  return (BtCursor*)&fakeCursor;
}
# 909 "src/btree.c"
int sqlite3BtreeCursorRestore(BtCursor *pCur, int *pDifferentRow){
  int rc;

  assert( pCur!=0 );
  assert( pCur->eState!=0 );
  rc = (pCur->eState>=3 ? btreeRestoreCursorPosition(pCur) : 0);
  if( rc ){
    *pDifferentRow = 1;
    return rc;
  }
  if( pCur->eState!=0 ){
    *pDifferentRow = 1;
  }else{
    *pDifferentRow = 0;
  }
  return 0;
}
# 941 "src/btree.c"
void sqlite3BtreeCursorHintFlags(BtCursor *pCur, unsigned x){
  assert( x==0x00000002 || x==0x00000001 || x==0 );
  pCur->hints = x;
}
# 957 "src/btree.c"
static Pgno ptrmapPageno(BtShared *pBt, Pgno pgno){
  int nPagesPerMapPage;
  Pgno iPtrMap, ret;
  assert( sqlite3_mutex_held(pBt->mutex) );
  if( pgno<2 ) return 0;
  nPagesPerMapPage = (pBt->usableSize/5)+1;
  iPtrMap = (pgno-2)/nPagesPerMapPage;
  ret = (iPtrMap*nPagesPerMapPage) + 2;
  if( ret==((Pgno)((sqlite3PendingByte/((pBt)->pageSize))+1)) ){
    ret++;
  }
  return ret;
}
# 981 "src/btree.c"
static void ptrmapPut(BtShared *pBt, Pgno key, u8 eType, Pgno parent, int *pRC){
  DbPage *pDbPage;
  u8 *pPtrmap;
  Pgno iPtrmap;
  int offset;
  int rc;

  if( *pRC ) return;

  assert( sqlite3_mutex_held(pBt->mutex) );

  assert( 0==(ptrmapPageno((pBt), (((Pgno)((sqlite3PendingByte/((pBt)->pageSize))+1))))==(((Pgno)((sqlite3PendingByte/((pBt)->pageSize))+1)))) );

  assert( pBt->autoVacuum );
  if( key==0 ){
    *pRC = sqlite3CorruptError(996);
    return;
  }
  iPtrmap = ptrmapPageno(pBt, key);
  rc = sqlite3PagerGet(pBt->pPager, iPtrmap, &pDbPage, 0);
  if( rc!=0 ){
    *pRC = rc;
    return;
  }
  if( ((char*)sqlite3PagerGetExtra(pDbPage))[0]!=0 ){


    *pRC = sqlite3CorruptError(1009);
    goto ptrmap_exit;
  }
  offset = (5*(key-iPtrmap-1));
  if( offset<0 ){
    *pRC = sqlite3CorruptError(1014);
    goto ptrmap_exit;
  }
  assert( offset <= (int)pBt->usableSize-5 );
  pPtrmap = (u8 *)sqlite3PagerGetData(pDbPage);

  if( eType!=pPtrmap[offset] || sqlite3Get4byte(&pPtrmap[offset+1])!=parent ){
    ;
    *pRC= rc = sqlite3PagerWrite(pDbPage);
    if( rc==0 ){
      pPtrmap[offset] = eType;
      sqlite3Put4byte(&pPtrmap[offset+1], parent);
    }
  }

ptrmap_exit:
  sqlite3PagerUnref(pDbPage);
}
# 1040 "src/btree.c"
static int ptrmapGet(BtShared *pBt, Pgno key, u8 *pEType, Pgno *pPgno){
  DbPage *pDbPage;
  int iPtrmap;
  u8 *pPtrmap;
  int offset;
  int rc;

  assert( sqlite3_mutex_held(pBt->mutex) );

  iPtrmap = ptrmapPageno(pBt, key);
  rc = sqlite3PagerGet(pBt->pPager, iPtrmap, &pDbPage, 0);
  if( rc!=0 ){
    return rc;
  }
  pPtrmap = (u8 *)sqlite3PagerGetData(pDbPage);

  offset = (5*(key-iPtrmap-1));
  if( offset<0 ){
    sqlite3PagerUnref(pDbPage);
    return sqlite3CorruptError(1059);
  }
  assert( offset <= (int)pBt->usableSize-5 );
  assert( pEType!=0 );
  *pEType = pPtrmap[offset];
  if( pPgno ) *pPgno = sqlite3Get4byte(&pPtrmap[offset+1]);

  sqlite3PagerUnref(pDbPage);
  if( *pEType<1 || *pEType>5 ) return sqlite3CorruptError(1067);
  return 0;
}
# 1099 "src/btree.c"
static void btreeParseCellAdjustSizeForOverflow(
  MemPage *pPage,
  u8 *pCell,
  CellInfo *pInfo
){
# 1113 "src/btree.c"
  int minLocal;
  int maxLocal;
  int surplus;

  minLocal = pPage->minLocal;
  maxLocal = pPage->maxLocal;
  surplus = minLocal + (pInfo->nPayload - minLocal)%(pPage->pBt->usableSize-4);
  ;
  ;
  if( surplus <= maxLocal ){
    pInfo->nLocal = (u16)surplus;
  }else{
    pInfo->nLocal = (u16)minLocal;
  }
  pInfo->nSize = (u16)(&pInfo->pPayload[pInfo->nLocal] - pCell) + 4;
}
# 1144 "src/btree.c"
static void btreeParseCellPtrNoPayload(
  MemPage *pPage,
  u8 *pCell,
  CellInfo *pInfo
){
  assert( sqlite3_mutex_held(pPage->pBt->mutex) );
  assert( pPage->leaf==0 );
  assert( pPage->childPtrSize==4 );

  (void)(pPage);

  pInfo->nSize = 4 + sqlite3GetVarint(&pCell[4], (u64*)&pInfo->nKey);
  pInfo->nPayload = 0;
  pInfo->nLocal = 0;
  pInfo->pPayload = 0;
  return;
}
static void btreeParseCellPtr(
  MemPage *pPage,
  u8 *pCell,
  CellInfo *pInfo
){
  u8 *pIter;
  u32 nPayload;
  u64 iKey;

  assert( sqlite3_mutex_held(pPage->pBt->mutex) );
  assert( pPage->leaf==0 || pPage->leaf==1 );
  assert( pPage->intKeyLeaf );
  assert( pPage->childPtrSize==0 );
  pIter = pCell;


  nPayload = *pIter;
  if( nPayload>=0x80 ){
    u8 *pEnd = &pIter[8];
    nPayload &= 0x7f;
    do{
      nPayload = (nPayload<<7) | (*++pIter & 0x7f);
    }while( (*pIter)>=0x80 && pIter<pEnd );
  }
  pIter++;


  iKey = *pIter;
  if( iKey>=0x80 ){
    u8 *pEnd = &pIter[7];
    iKey &= 0x7f;
    while(1){
      iKey = (iKey<<7) | (*++pIter & 0x7f);
      if( (*pIter)<0x80 ) break;
      if( pIter>=pEnd ){
        iKey = (iKey<<8) | *++pIter;
        break;
      }
    }
  }
  pIter++;

  pInfo->nKey = *(i64*)&iKey;
  pInfo->nPayload = nPayload;
  pInfo->pPayload = pIter;
  ;
  ;
  if( nPayload<=pPage->maxLocal ){


    pInfo->nSize = nPayload + (u16)(pIter - pCell);
    if( pInfo->nSize<4 ) pInfo->nSize = 4;
    pInfo->nLocal = (u16)nPayload;
  }else{
    btreeParseCellAdjustSizeForOverflow(pPage, pCell, pInfo);
  }
}
static void btreeParseCellPtrIndex(
  MemPage *pPage,
  u8 *pCell,
  CellInfo *pInfo
){
  u8 *pIter;
  u32 nPayload;

  assert( sqlite3_mutex_held(pPage->pBt->mutex) );
  assert( pPage->leaf==0 || pPage->leaf==1 );
  assert( pPage->intKeyLeaf==0 );
  pIter = pCell + pPage->childPtrSize;
  nPayload = *pIter;
  if( nPayload>=0x80 ){
    u8 *pEnd = &pIter[8];
    nPayload &= 0x7f;
    do{
      nPayload = (nPayload<<7) | (*++pIter & 0x7f);
    }while( *(pIter)>=0x80 && pIter<pEnd );
  }
  pIter++;
  pInfo->nKey = nPayload;
  pInfo->nPayload = nPayload;
  pInfo->pPayload = pIter;
  ;
  ;
  if( nPayload<=pPage->maxLocal ){


    pInfo->nSize = nPayload + (u16)(pIter - pCell);
    if( pInfo->nSize<4 ) pInfo->nSize = 4;
    pInfo->nLocal = (u16)nPayload;
  }else{
    btreeParseCellAdjustSizeForOverflow(pPage, pCell, pInfo);
  }
}
static void btreeParseCell(
  MemPage *pPage,
  int iCell,
  CellInfo *pInfo
){
  pPage->xParseCell(pPage, ((pPage)->aData + ((pPage)->maskPage & __builtin_bswap16(*(u16*)(&(pPage)->aCellIdx[2*(iCell)])))), pInfo);
}
# 1286 "src/btree.c"
static u16 cellSizePtr(MemPage *pPage, u8 *pCell){
  u8 *pIter = pCell + pPage->childPtrSize;
  u8 *pEnd;
  u32 nSize;
# 1300 "src/btree.c"
  nSize = *pIter;
  if( nSize>=0x80 ){
    pEnd = &pIter[8];
    nSize &= 0x7f;
    do{
      nSize = (nSize<<7) | (*++pIter & 0x7f);
    }while( *(pIter)>=0x80 && pIter<pEnd );
  }
  pIter++;
  if( pPage->intKey ){


    pEnd = &pIter[9];
    while( (*pIter++)&0x80 && pIter<pEnd );
  }
  ;
  ;
  if( nSize<=pPage->maxLocal ){
    nSize += (u32)(pIter - pCell);
    if( nSize<4 ) nSize = 4;
  }else{
    int minLocal = pPage->minLocal;
    nSize = minLocal + (nSize - minLocal) % (pPage->pBt->usableSize - 4);
    ;
    ;
    if( nSize>pPage->maxLocal ){
      nSize = minLocal;
    }
    nSize += 4 + (u16)(pIter - pCell);
  }
  assert( nSize==debuginfo.nSize || (sqlite3Config.neverCorrupt==0) );
  return (u16)nSize;
}
static u16 cellSizePtrNoPayload(MemPage *pPage, u8 *pCell){
  u8 *pIter = pCell + 4;
  u8 *pEnd;
# 1346 "src/btree.c"
  (void)(pPage);


  assert( pPage->childPtrSize==4 );
  pEnd = pIter + 9;
  while( (*pIter++)&0x80 && pIter<pEnd );
  assert( debuginfo.nSize==(u16)(pIter - pCell) || (sqlite3Config.neverCorrupt==0) );
  return (u16)(pIter - pCell);
}
# 1372 "src/btree.c"
static void ptrmapPutOvflPtr(MemPage *pPage, MemPage *pSrc, u8 *pCell,int *pRC){
  CellInfo info;
  if( *pRC ) return;
  assert( pCell!=0 );
  pPage->xParseCell(pPage, pCell, &info);
  if( info.nLocal<info.nPayload ){
    Pgno ovfl;
    if( (((uptr)(pSrc->aDataEnd)>=(uptr)(pCell))&&((uptr)(pSrc->aDataEnd)<(uptr)(pCell+info.nLocal))) ){
      ;
      *pRC = sqlite3CorruptError(1381);
      return;
    }
    ovfl = sqlite3Get4byte(&pCell[info.nSize-4]);
    ptrmapPut(pPage->pBt, ovfl, 3, pPage->pgno, pRC);
  }
}
# 1403 "src/btree.c"
static int defragmentPage(MemPage *pPage, int nMaxFrag){
  int i;
  int pc;
  int hdr;
  int size;
  int usableSize;
  int cellOffset;
  int cbrk;
  int nCell;
  unsigned char *data;
  unsigned char *temp;
  unsigned char *src;
  int iCellFirst;
  int iCellLast;

  assert( sqlite3PagerIswriteable(pPage->pDbPage) );
  assert( pPage->pBt!=0 );
  assert( pPage->pBt->usableSize <= 65536 );
  assert( pPage->nOverflow==0 );
  assert( sqlite3_mutex_held(pPage->pBt->mutex) );
  temp = 0;
  src = data = pPage->aData;
  hdr = pPage->hdrOffset;
  cellOffset = pPage->cellOffset;
  nCell = pPage->nCell;
  assert( nCell==((&data[hdr+3])[0]<<8 | (&data[hdr+3])[1]) || (sqlite3Config.neverCorrupt==0) );
  iCellFirst = cellOffset + 2*nCell;
  usableSize = pPage->pBt->usableSize;


  if( (int)data[hdr+7]<=nMaxFrag ){
    int iFree = ((&data[hdr+1])[0]<<8 | (&data[hdr+1])[1]);
    if( iFree>usableSize-4 ) return sqlite3CorruptError(1439);
    if( iFree ){
      int iFree2 = ((&data[iFree])[0]<<8 | (&data[iFree])[1]);
      if( iFree2>usableSize-4 ) return sqlite3CorruptError(1442);
      if( 0==iFree2 || (data[iFree2]==0 && data[iFree2+1]==0) ){
        u8 *pEnd = &data[cellOffset + nCell*2];
        u8 *pAddr;
        int sz2 = 0;
        int sz = ((&data[iFree+2])[0]<<8 | (&data[iFree+2])[1]);
        int top = ((&data[hdr+5])[0]<<8 | (&data[hdr+5])[1]);
        if( top>=iFree ){
          return sqlite3CorruptError(1450);
        }
        if( iFree2 ){
          if( iFree+sz>iFree2 ) return sqlite3CorruptError(1453);
          sz2 = ((&data[iFree2+2])[0]<<8 | (&data[iFree2+2])[1]);
          if( iFree2+sz2 > usableSize ) return sqlite3CorruptError(1455);
          memmove(&data[iFree+sz+sz2], &data[iFree+sz], iFree2-(iFree+sz));
          sz += sz2;
        }else if( iFree+sz>usableSize ){
          return sqlite3CorruptError(1459);
        }

        cbrk = top+sz;
        assert( cbrk+(iFree-top) <= usableSize );
        memmove(&data[cbrk], &data[top], iFree-top);
        for(pAddr=&data[cellOffset]; pAddr<pEnd; pAddr+=2){
          pc = ((pAddr)[0]<<8 | (pAddr)[1]);
          if( pc<iFree ){ ((pAddr)[0] = (u8)((pc+sz)>>8), (pAddr)[1] = (u8)(pc+sz)); }
          else if( pc<iFree2 ){ ((pAddr)[0] = (u8)((pc+sz2)>>8), (pAddr)[1] = (u8)(pc+sz2)); }
        }
        goto defragment_out;
      }
    }
  }

  cbrk = usableSize;
  iCellLast = usableSize - 4;
  for(i=0; i<nCell; i++){
    u8 *pAddr;
    pAddr = &data[cellOffset + i*2];
    pc = ((pAddr)[0]<<8 | (pAddr)[1]);
    ;
    ;


    if( pc<iCellFirst || pc>iCellLast ){
      return sqlite3CorruptError(1487);
    }
    assert( pc>=iCellFirst && pc<=iCellLast );
    size = pPage->xCellSize(pPage, &src[pc]);
    cbrk -= size;
    if( cbrk<iCellFirst || pc+size>usableSize ){
      return sqlite3CorruptError(1493);
    }
    assert( cbrk+size<=usableSize && cbrk>=iCellFirst );
    ;
    ;
    ((pAddr)[0] = (u8)((cbrk)>>8), (pAddr)[1] = (u8)(cbrk));
    if( temp==0 ){
      int x;
      if( cbrk==pc ) continue;
      temp = sqlite3PagerTempSpace(pPage->pBt->pPager);
      x = ((&data[hdr+5])[0]<<8 | (&data[hdr+5])[1]);
      memcpy(&temp[x], &data[x], (cbrk+size) - x);
      src = temp;
    }
    memcpy(&data[cbrk], &src[pc], size);
  }
  data[hdr+7] = 0;

 defragment_out:
  assert( pPage->nFree>=0 );
  if( data[hdr+7]+cbrk-iCellFirst!=pPage->nFree ){
    return sqlite3CorruptError(1514);
  }
  assert( cbrk>=iCellFirst );
  ((&data[hdr+5])[0] = (u8)((cbrk)>>8), (&data[hdr+5])[1] = (u8)(cbrk));
  data[hdr+1] = 0;
  data[hdr+2] = 0;
  memset(&data[iCellFirst], 0, cbrk-iCellFirst);
  assert( sqlite3PagerIswriteable(pPage->pDbPage) );
  return 0;
}
# 1539 "src/btree.c"
static u8 *pageFindSlot(MemPage *pPg, int nByte, int *pRc){
  const int hdr = pPg->hdrOffset;
  u8 * const aData = pPg->aData;
  int iAddr = hdr + 1;
  int pc = ((&aData[iAddr])[0]<<8 | (&aData[iAddr])[1]);
  int x;
  int maxPC = pPg->pBt->usableSize - nByte;
  int size;

  assert( pc>0 );
  while( pc<=maxPC ){


    size = ((&aData[pc+2])[0]<<8 | (&aData[pc+2])[1]);
    if( (x = size - nByte)>=0 ){
      ;
      ;
      if( x<4 ){


        if( aData[hdr+7]>57 ) return 0;


        memcpy(&aData[iAddr], &aData[pc], 2);
        aData[hdr+7] += (u8)x;
      }else if( x+pc > maxPC ){

        *pRc = sqlite3CorruptError(1568);
        return 0;
      }else{


        ((&aData[pc+2])[0] = (u8)((x)>>8), (&aData[pc+2])[1] = (u8)(x));
      }
      return &aData[pc + x];
    }
    iAddr = pc;
    pc = ((&aData[pc])[0]<<8 | (&aData[pc])[1]);
    if( pc<=iAddr+size ){
      if( pc ){

        *pRc = sqlite3CorruptError(1582);
      }
      return 0;
    }
  }
  if( pc>maxPC+nByte-4 ){

    *pRc = sqlite3CorruptError(1589);
  }
  return 0;
}
# 1607 "src/btree.c"
static int allocateSpace(MemPage *pPage, int nByte, int *pIdx){
  const int hdr = pPage->hdrOffset;
  u8 * const data = pPage->aData;
  int top;
  int rc = 0;
  int gap;

  assert( sqlite3PagerIswriteable(pPage->pDbPage) );
  assert( pPage->pBt );
  assert( sqlite3_mutex_held(pPage->pBt->mutex) );
  assert( nByte>=0 );
  assert( pPage->nFree>=nByte );
  assert( pPage->nOverflow==0 );
  assert( nByte < (int)(pPage->pBt->usableSize-8) );

  assert( pPage->cellOffset == hdr + 12 - 4*pPage->leaf );
  gap = pPage->cellOffset + 2*pPage->nCell;
  assert( gap<=65536 );


  top = ((&data[hdr+5])[0]<<8 | (&data[hdr+5])[1]);
  assert( top<=(int)pPage->pBt->usableSize );
  if( gap>top ){
    if( top==0 && pPage->pBt->usableSize==65536 ){
      top = 65536;
    }else{
      return sqlite3CorruptError(1636);
    }
  }


  ;
  ;
  ;
  if( (data[hdr+2] || data[hdr+1]) && gap+2<=top ){
    u8 *pSpace = pageFindSlot(pPage, nByte, &rc);
    if( pSpace ){
      assert( pSpace>=data && (pSpace - data)<65536 );
      *pIdx = (int)(pSpace - data);
      return 0;
    }else if( rc ){
      return rc;
    }
  }


  ;
  if( gap+2+nByte>top ){
    assert( pPage->nCell>0 || (sqlite3Config.neverCorrupt==0) );
    assert( pPage->nFree>=0 );
    rc = defragmentPage(pPage, ((4)<(pPage->nFree - (2+nByte))?(4):(pPage->nFree - (2+nByte))));
    if( rc ) return rc;
    top = (((((int)((&data[hdr+5])[0]<<8 | (&data[hdr+5])[1]))-1)&0xffff)+1);
    assert( gap+2+nByte<=top );
  }
# 1678 "src/btree.c"
  top -= nByte;
  ((&data[hdr+5])[0] = (u8)((top)>>8), (&data[hdr+5])[1] = (u8)(top));
  assert( top+nByte <= (int)pPage->pBt->usableSize );
  *pIdx = top;
  return 0;
}
# 1698 "src/btree.c"
static int freeSpace(MemPage *pPage, u16 iStart, u16 iSize){
  u16 iPtr;
  u16 iFreeBlk;
  u8 hdr;
  u8 nFrag = 0;
  u16 iOrigSize = iSize;
  u16 x;
  u32 iEnd = iStart + iSize;
  unsigned char *data = pPage->aData;

  assert( pPage->pBt!=0 );
  assert( sqlite3PagerIswriteable(pPage->pDbPage) );
  assert( (sqlite3Config.neverCorrupt==0) || iStart>=pPage->hdrOffset+6+pPage->childPtrSize );
  assert( (sqlite3Config.neverCorrupt==0) || iEnd <= pPage->pBt->usableSize );
  assert( sqlite3_mutex_held(pPage->pBt->mutex) );
  assert( iSize>=4 );
  assert( iStart<=pPage->pBt->usableSize-4 );


  hdr = pPage->hdrOffset;
  iPtr = hdr + 1;
  if( data[iPtr+1]==0 && data[iPtr]==0 ){
    iFreeBlk = 0;
  }else{
    while( (iFreeBlk = ((&data[iPtr])[0]<<8 | (&data[iPtr])[1]))<iStart ){
      if( iFreeBlk<iPtr+4 ){
        if( iFreeBlk==0 ) break;
        return sqlite3CorruptError(1727);
      }
      iPtr = iFreeBlk;
    }
    if( iFreeBlk>pPage->pBt->usableSize-4 ){
      return sqlite3CorruptError(1732);
    }
    assert( iFreeBlk>iPtr || iFreeBlk==0 );


    if( iFreeBlk && iEnd+3>=iFreeBlk ){
      nFrag = iFreeBlk - iEnd;
      if( iEnd>iFreeBlk ) return sqlite3CorruptError(1744);
      iEnd = iFreeBlk + ((&data[iFreeBlk+2])[0]<<8 | (&data[iFreeBlk+2])[1]);
      if( iEnd > pPage->pBt->usableSize ){
        return sqlite3CorruptError(1747);
      }
      iSize = iEnd - iStart;
      iFreeBlk = ((&data[iFreeBlk])[0]<<8 | (&data[iFreeBlk])[1]);
    }


    if( iPtr>hdr+1 ){
      int iPtrEnd = iPtr + ((&data[iPtr+2])[0]<<8 | (&data[iPtr+2])[1]);
      if( iPtrEnd+3>=iStart ){
        if( iPtrEnd>iStart ) return sqlite3CorruptError(1760);
        nFrag += iStart - iPtrEnd;
        iSize = iEnd - iPtr;
        iStart = iPtr;
      }
    }
    if( nFrag>data[hdr+7] ) return sqlite3CorruptError(1766);
    data[hdr+7] -= nFrag;
  }
  x = ((&data[hdr+5])[0]<<8 | (&data[hdr+5])[1]);
  if( iStart<=x ){


    if( iStart<x || iPtr!=hdr+1 ) return sqlite3CorruptError(1774);
    ((&data[hdr+1])[0] = (u8)((iFreeBlk)>>8), (&data[hdr+1])[1] = (u8)(iFreeBlk));
    ((&data[hdr+5])[0] = (u8)((iEnd)>>8), (&data[hdr+5])[1] = (u8)(iEnd));
  }else{

    ((&data[iPtr])[0] = (u8)((iStart)>>8), (&data[iPtr])[1] = (u8)(iStart));
  }
  if( pPage->pBt->btsFlags & 0x000c ){


    memset(&data[iStart], 0, iSize);
  }
  ((&data[iStart])[0] = (u8)((iFreeBlk)>>8), (&data[iStart])[1] = (u8)(iFreeBlk));
  ((&data[iStart+2])[0] = (u8)((iSize)>>8), (&data[iStart+2])[1] = (u8)(iSize));
  pPage->nFree += iOrigSize;
  return 0;
}
# 1804 "src/btree.c"
static int decodeFlags(MemPage *pPage, int flagByte){
  BtShared *pBt;

  assert( pPage->hdrOffset==(pPage->pgno==1 ? 100 : 0) );
  assert( sqlite3_mutex_held(pPage->pBt->mutex) );
  pPage->leaf = (u8)(flagByte>>3); assert( 0x08 == 1<<3 );
  flagByte &= ~0x08;
  pPage->childPtrSize = 4-4*pPage->leaf;
  pPage->xCellSize = cellSizePtr;
  pBt = pPage->pBt;
  if( flagByte==(0x04 | 0x01) ){


    assert( (0x04|0x01)==5 );


    assert( (0x04|0x01|0x08)==13 );
    pPage->intKey = 1;
    if( pPage->leaf ){
      pPage->intKeyLeaf = 1;
      pPage->xParseCell = btreeParseCellPtr;
    }else{
      pPage->intKeyLeaf = 0;
      pPage->xCellSize = cellSizePtrNoPayload;
      pPage->xParseCell = btreeParseCellPtrNoPayload;
    }
    pPage->maxLocal = pBt->maxLeaf;
    pPage->minLocal = pBt->minLeaf;
  }else if( flagByte==0x02 ){


    assert( (0x02)==2 );


    assert( (0x02|0x08)==10 );
    pPage->intKey = 0;
    pPage->intKeyLeaf = 0;
    pPage->xParseCell = btreeParseCellPtrIndex;
    pPage->maxLocal = pBt->maxLocal;
    pPage->minLocal = pBt->minLocal;
  }else{


    return sqlite3CorruptError(1847);
  }
  pPage->max1bytePayload = pBt->max1bytePayload;
  return 0;
}


static int btreeComputeFreeSpace(MemPage *pPage){
  int pc;
  u8 hdr;
  u8 *data;
  int usableSize;
  int nFree;
  int top;
  int iCellFirst;
  int iCellLast;

  assert( pPage->pBt!=0 );
  assert( pPage->pBt->db!=0 );
  assert( sqlite3_mutex_held(pPage->pBt->mutex) );
  assert( pPage->pgno==sqlite3PagerPagenumber(pPage->pDbPage) );
  assert( pPage == sqlite3PagerGetExtra(pPage->pDbPage) );
  assert( pPage->aData == sqlite3PagerGetData(pPage->pDbPage) );
  assert( pPage->isInit==1 );
  assert( pPage->nFree<0 );

  usableSize = pPage->pBt->usableSize;
  hdr = pPage->hdrOffset;
  data = pPage->aData;


  top = (((((int)((&data[hdr+5])[0]<<8 | (&data[hdr+5])[1]))-1)&0xffff)+1);
  iCellFirst = hdr + 8 + pPage->childPtrSize + 2*pPage->nCell;
  iCellLast = usableSize - 4;


  pc = ((&data[hdr+1])[0]<<8 | (&data[hdr+1])[1]);
  nFree = data[hdr+7] + top;
  if( pc>0 ){
    u32 next, size;
    if( pc<iCellFirst ){


      return sqlite3CorruptError(1898);
    }
    while( 1 ){
      if( pc>iCellLast ){

        return sqlite3CorruptError(1903);
      }
      next = ((&data[pc])[0]<<8 | (&data[pc])[1]);
      size = ((&data[pc+2])[0]<<8 | (&data[pc+2])[1]);
      nFree = nFree + size;
      if( next<=pc+size+3 ) break;
      pc = next;
    }
    if( next>0 ){

      return sqlite3CorruptError(1913);
    }
    if( pc+size>(unsigned int)usableSize ){

      return sqlite3CorruptError(1917);
    }
  }
# 1928 "src/btree.c"
  if( nFree>usableSize || nFree<iCellFirst ){
    return sqlite3CorruptError(1929);
  }
  pPage->nFree = (u16)(nFree - iCellFirst);
  return 0;
}


static int btreeCellSizeCheck(MemPage *pPage){
  int iCellFirst;
  int iCellLast;
  int i;
  int sz;
  int pc;
  u8 *data;
  int usableSize;
  int cellOffset;

  iCellFirst = pPage->cellOffset + 2*pPage->nCell;
  usableSize = pPage->pBt->usableSize;
  iCellLast = usableSize - 4;
  data = pPage->aData;
  cellOffset = pPage->cellOffset;
  if( !pPage->leaf ) iCellLast--;
  for(i=0; i<pPage->nCell; i++){
    pc = __builtin_bswap16(*(u16*)(&data[cellOffset+i*2]));
    ;
    ;
    if( pc<iCellFirst || pc>iCellLast ){
      return sqlite3CorruptError(1960);
    }
    sz = pPage->xCellSize(pPage, &data[pc]);
    ;
    if( pc+sz>usableSize ){
      return sqlite3CorruptError(1965);
    }
  }
  return 0;
}
# 1980 "src/btree.c"
static int btreeInitPage(MemPage *pPage){
  u8 *data;
  BtShared *pBt;

  assert( pPage->pBt!=0 );
  assert( pPage->pBt->db!=0 );
  assert( sqlite3_mutex_held(pPage->pBt->mutex) );
  assert( pPage->pgno==sqlite3PagerPagenumber(pPage->pDbPage) );
  assert( pPage == sqlite3PagerGetExtra(pPage->pDbPage) );
  assert( pPage->aData == sqlite3PagerGetData(pPage->pDbPage) );
  assert( pPage->isInit==0 );

  pBt = pPage->pBt;
  data = pPage->aData + pPage->hdrOffset;


  if( decodeFlags(pPage, data[0]) ){
    return sqlite3CorruptError(1997);
  }
  assert( pBt->pageSize>=512 && pBt->pageSize<=65536 );
  pPage->maskPage = (u16)(pBt->pageSize - 1);
  pPage->nOverflow = 0;
  pPage->cellOffset = pPage->hdrOffset + 8 + pPage->childPtrSize;
  pPage->aCellIdx = data + pPage->childPtrSize + 8;
  pPage->aDataEnd = pPage->aData + pBt->usableSize;
  pPage->aDataOfst = pPage->aData + pPage->childPtrSize;


  pPage->nCell = ((&data[3])[0]<<8 | (&data[3])[1]);
  if( pPage->nCell>((pBt->pageSize-8)/6) ){

    return sqlite3CorruptError(2011);
  }
  ;


  assert( pPage->nCell>0
       || (((((int)((&data[5])[0]<<8 | (&data[5])[1]))-1)&0xffff)+1)==(int)pBt->usableSize
       || (sqlite3Config.neverCorrupt==0) );
  pPage->nFree = -1;
  pPage->isInit = 1;
  if( pBt->db->flags & 0x00200000 ){
    return btreeCellSizeCheck(pPage);
  }
  return 0;
}


static void zeroPage(MemPage *pPage, int flags){
  unsigned char *data = pPage->aData;
  BtShared *pBt = pPage->pBt;
  u8 hdr = pPage->hdrOffset;
  u16 first;

  assert( sqlite3PagerPagenumber(pPage->pDbPage)==pPage->pgno );
  assert( sqlite3PagerGetExtra(pPage->pDbPage) == (void*)pPage );
  assert( sqlite3PagerGetData(pPage->pDbPage) == data );
  assert( sqlite3PagerIswriteable(pPage->pDbPage) );
  assert( sqlite3_mutex_held(pBt->mutex) );
  if( pBt->btsFlags & 0x000c ){
    memset(&data[hdr], 0, pBt->usableSize - hdr);
  }
  data[hdr] = (char)flags;
  first = hdr + ((flags&0x08)==0 ? 12 : 8);
  memset(&data[hdr+1], 0, 4);
  data[hdr+7] = 0;
  ((&data[hdr+5])[0] = (u8)((pBt->usableSize)>>8), (&data[hdr+5])[1] = (u8)(pBt->usableSize));
  pPage->nFree = (u16)(pBt->usableSize - first);
  decodeFlags(pPage, flags);
  pPage->cellOffset = first;
  pPage->aDataEnd = &data[pBt->usableSize];
  pPage->aCellIdx = &data[first];
  pPage->aDataOfst = &data[pPage->childPtrSize];
  pPage->nOverflow = 0;
  assert( pBt->pageSize>=512 && pBt->pageSize<=65536 );
  pPage->maskPage = (u16)(pBt->pageSize - 1);
  pPage->nCell = 0;
  pPage->isInit = 1;
}


static MemPage *btreePageFromDbPage(DbPage *pDbPage, Pgno pgno, BtShared *pBt){
  MemPage *pPage = (MemPage*)sqlite3PagerGetExtra(pDbPage);
  if( pgno!=pPage->pgno ){
    pPage->aData = sqlite3PagerGetData(pDbPage);
    pPage->pDbPage = pDbPage;
    pPage->pBt = pBt;
    pPage->pgno = pgno;
    pPage->hdrOffset = pgno==1 ? 100 : 0;
  }
  assert( pPage->aData==sqlite3PagerGetData(pDbPage) );
  return pPage;
}
# 2094 "src/btree.c"
static int btreeGetPage(
  BtShared *pBt,
  Pgno pgno,
  MemPage **ppPage,
  int flags
){
  int rc;
  DbPage *pDbPage;

  assert( flags==0 || flags==0x01 || flags==0x02 );
  assert( sqlite3_mutex_held(pBt->mutex) );
  rc = sqlite3PagerGet(pBt->pPager, pgno, (DbPage**)&pDbPage, flags);
  if( rc ) return rc;
  *ppPage = btreePageFromDbPage(pDbPage, pgno, pBt);
  return 0;
}


static MemPage *btreePageLookup(BtShared *pBt, Pgno pgno){
  DbPage *pDbPage;
  assert( sqlite3_mutex_held(pBt->mutex) );
  pDbPage = sqlite3PagerLookup(pBt->pPager, pgno);
  if( pDbPage ){
    return btreePageFromDbPage(pDbPage, pgno, pBt);
  }
  return 0;
}


static Pgno btreePagecount(BtShared *pBt){
  return pBt->nPage;
}
u32 sqlite3BtreeLastPage(Btree *p){
  assert( sqlite3BtreeHoldsMutex(p) );
  assert( ((p->pBt->nPage)&0x80000000)==0 );
  return btreePagecount(p->pBt);
}
# 2152 "src/btree.c"
static int getAndInitPage(
  BtShared *pBt,
  Pgno pgno,
  MemPage **ppPage,
  BtCursor *pCur,
  int bReadOnly
){
  int rc;
  DbPage *pDbPage;
  assert( sqlite3_mutex_held(pBt->mutex) );
  assert( pCur==0 || ppPage==&pCur->pPage );
  assert( pCur==0 || bReadOnly==pCur->curPagerFlags );
  assert( pCur==0 || pCur->iPage>0 );

  if( pgno>btreePagecount(pBt) ){
    rc = sqlite3CorruptError(2167);
    goto getAndInitPage_error1;
  }
  rc = sqlite3PagerGet(pBt->pPager, pgno, (DbPage**)&pDbPage, bReadOnly);
  if( rc ){
    goto getAndInitPage_error1;
  }
  *ppPage = (MemPage*)sqlite3PagerGetExtra(pDbPage);
  if( (*ppPage)->isInit==0 ){
    btreePageFromDbPage(pDbPage, pgno, pBt);
    rc = btreeInitPage(*ppPage);
    if( rc!=0 ){
      goto getAndInitPage_error2;
    }
  }
  assert( (*ppPage)->pgno==pgno );
  assert( (*ppPage)->aData==sqlite3PagerGetData(pDbPage) );


  if( pCur && ((*ppPage)->nCell<1 || (*ppPage)->intKey!=pCur->curIntKey) ){
    rc = sqlite3CorruptError(2188);
    goto getAndInitPage_error2;
  }
  return 0;

getAndInitPage_error2:
  releasePage(*ppPage);
getAndInitPage_error1:
  if( pCur ){
    pCur->iPage--;
    pCur->pPage = pCur->apPage[pCur->iPage];
  }
  ;
  assert( pgno!=0 || rc==11 );
  return rc;
}


static void releasePageNotNull(MemPage *pPage){
  assert( pPage->aData );
  assert( pPage->pBt );
  assert( pPage->pDbPage!=0 );
  assert( sqlite3PagerGetExtra(pPage->pDbPage) == (void*)pPage );
  assert( sqlite3PagerGetData(pPage->pDbPage)==pPage->aData );
  assert( sqlite3_mutex_held(pPage->pBt->mutex) );
  sqlite3PagerUnrefNotNull(pPage->pDbPage);
}
static void releasePage(MemPage *pPage){
  if( pPage ) releasePageNotNull(pPage);
}
static void releasePageOne(MemPage *pPage){
  assert( pPage!=0 );
  assert( pPage->aData );
  assert( pPage->pBt );
  assert( pPage->pDbPage!=0 );
  assert( sqlite3PagerGetExtra(pPage->pDbPage) == (void*)pPage );
  assert( sqlite3PagerGetData(pPage->pDbPage)==pPage->aData );
  assert( sqlite3_mutex_held(pPage->pBt->mutex) );
  sqlite3PagerUnrefPageOne(pPage->pDbPage);
}
# 2243 "src/btree.c"
static int btreeGetUnusedPage(
  BtShared *pBt,
  Pgno pgno,
  MemPage **ppPage,
  int flags
){
  int rc = btreeGetPage(pBt, pgno, ppPage, flags);
  if( rc==0 ){
    if( sqlite3PagerPageRefcount((*ppPage)->pDbPage)>1 ){
      releasePage(*ppPage);
      *ppPage = 0;
      return sqlite3CorruptError(2254);
    }
    (*ppPage)->isInit = 0;
  }else{
    *ppPage = 0;
  }
  return rc;
}
# 2272 "src/btree.c"
static void pageReinit(DbPage *pData){
  MemPage *pPage;
  pPage = (MemPage *)sqlite3PagerGetExtra(pData);
  assert( sqlite3PagerPageRefcount(pData)>0 );
  if( pPage->isInit ){
    assert( sqlite3_mutex_held(pPage->pBt->mutex) );
    pPage->isInit = 0;
    if( sqlite3PagerPageRefcount(pData)>1 ){


      btreeInitPage(pPage);
    }
  }
}


static int btreeInvokeBusyHandler(void *pArg){
  BtShared *pBt = (BtShared*)pArg;
  assert( pBt->db );
  assert( sqlite3_mutex_held(pBt->db->mutex) );
  return sqlite3InvokeBusyHandler(&pBt->db->busyHandler,
                                  sqlite3PagerFile(pBt->pPager));
}
# 2323 "src/btree.c"
int sqlite3BtreeOpen(
  sqlite3_vfs *pVfs,
  const char *zFilename,
  sqlite3 *db,
  Btree **ppBtree,
  int flags,
  int vfsFlags
){
  BtShared *pBt = 0;
  Btree *p;
  sqlite3_mutex *mutexOpen = 0;
  int rc = 0;
  u8 nReserve;
  unsigned char zDbHeader[100];


  const int isTempDb = zFilename==0 || zFilename[0]==0;


  const int isMemdb = (zFilename && strcmp(zFilename, ":memory:")==0)
                       || (isTempDb && sqlite3TempInMemory(db))
                       || (vfsFlags & 0x00000080)!=0;


  assert( db!=0 );
  assert( pVfs!=0 );
  assert( sqlite3_mutex_held(db->mutex) );
  assert( (flags&0xff)==flags );


  assert( (flags & 8)==0 || (flags & 4)!=0 );


  assert( (flags & 4)==0 || isTempDb );

  if( isMemdb ){
    flags |= 2;
  }
  if( (vfsFlags & 0x00000100)!=0 && (isMemdb || isTempDb) ){
    vfsFlags = (vfsFlags & ~0x00000100) | 0x00000200;
  }
  p = sqlite3MallocZero(sizeof(Btree));
  if( !p ){
    return 7;
  }
  p->inTrans = 0;
  p->db = db;

  p->lock.pBtree = p;
  p->lock.iTable = 1;


  if( isTempDb==0 && (isMemdb==0 || (vfsFlags&0x00000040)!=0) ){
    if( vfsFlags & 0x00020000 ){
      int nFilename = sqlite3Strlen30(zFilename)+1;
      int nFullPathname = pVfs->mxPathname+1;
      char *zFullPathname = sqlite3Malloc(((nFullPathname)>(nFilename)?(nFullPathname):(nFilename)));
      sqlite3_mutex *mutexShared;

      p->sharable = 1;
      if( !zFullPathname ){
        sqlite3_free(p);
        return 7;
      }
      if( isMemdb ){
        memcpy(zFullPathname, zFilename, nFilename);
      }else{
        rc = sqlite3OsFullPathname(pVfs, zFilename,
                                   nFullPathname, zFullPathname);
        if( rc ){
          sqlite3_free(zFullPathname);
          sqlite3_free(p);
          return rc;
        }
      }

      mutexOpen = sqlite3MutexAlloc(4);
      sqlite3_mutex_enter(mutexOpen);
      mutexShared = sqlite3MutexAlloc(2);
      sqlite3_mutex_enter(mutexShared);

      for(pBt=sqlite3SharedCacheList; pBt; pBt=pBt->pNext){
        assert( pBt->nRef>0 );
        if( 0==strcmp(zFullPathname, sqlite3PagerFilename(pBt->pPager, 0))
                 && sqlite3PagerVfs(pBt->pPager)==pVfs ){
          int iDb;
          for(iDb=db->nDb-1; iDb>=0; iDb--){
            Btree *pExisting = db->aDb[iDb].pBt;
            if( pExisting && pExisting->pBt==pBt ){
              sqlite3_mutex_leave(mutexShared);
              sqlite3_mutex_leave(mutexOpen);
              sqlite3_free(zFullPathname);
              sqlite3_free(p);
              return 19;
            }
          }
          p->pBt = pBt;
          pBt->nRef++;
          break;
        }
      }
      sqlite3_mutex_leave(mutexShared);
      sqlite3_free(zFullPathname);
    }
# 2447 "src/btree.c"
  }

  if( pBt==0 ){


    assert( sizeof(i64)==8 );
    assert( sizeof(u64)==8 );
    assert( sizeof(u32)==4 );
    assert( sizeof(u16)==2 );
    assert( sizeof(Pgno)==4 );

    pBt = sqlite3MallocZero( sizeof(*pBt) );
    if( pBt==0 ){
      rc = 7;
      goto btree_open_out;
    }
    rc = sqlite3PagerOpen(pVfs, &pBt->pPager, zFilename,
                          sizeof(MemPage), flags, vfsFlags, pageReinit);
    if( rc==0 ){
      sqlite3PagerSetMmapLimit(pBt->pPager, db->szMmap);
      rc = sqlite3PagerReadFileheader(pBt->pPager,sizeof(zDbHeader),zDbHeader);
    }
    if( rc!=0 ){
      goto btree_open_out;
    }
    pBt->openFlags = (u8)flags;
    pBt->db = db;
    sqlite3PagerSetBusyHandler(pBt->pPager, btreeInvokeBusyHandler, pBt);
    p->pBt = pBt;

    pBt->pCursor = 0;
    pBt->pPage1 = 0;
    if( sqlite3PagerIsreadonly(pBt->pPager) ) pBt->btsFlags |= 0x0001;
# 2491 "src/btree.c"
    pBt->pageSize = (zDbHeader[16]<<8) | (zDbHeader[17]<<16);
    if( pBt->pageSize<512 || pBt->pageSize>65536
         || ((pBt->pageSize-1)&pBt->pageSize)!=0 ){
      pBt->pageSize = 0;


      if( zFilename && !isMemdb ){
        pBt->autoVacuum = (0 ? 1 : 0);
        pBt->incrVacuum = (0==2 ? 1 : 0);
      }

      nReserve = 0;
    }else{


      nReserve = zDbHeader[20];
      pBt->btsFlags |= 0x0002;

      pBt->autoVacuum = (sqlite3Get4byte(&zDbHeader[36 + 4*4])?1:0);
      pBt->incrVacuum = (sqlite3Get4byte(&zDbHeader[36 + 7*4])?1:0);

    }
    rc = sqlite3PagerSetPagesize(pBt->pPager, &pBt->pageSize, nReserve);
    if( rc ) goto btree_open_out;
    pBt->usableSize = pBt->pageSize - nReserve;
    assert( (pBt->pageSize & 7)==0 );


    pBt->nRef = 1;
    if( p->sharable ){
      sqlite3_mutex *mutexShared;
      mutexShared = sqlite3MutexAlloc(2);
      if( 1 && sqlite3Config.bCoreMutex ){
        pBt->mutex = sqlite3MutexAlloc(0);
        if( pBt->mutex==0 ){
          rc = 7;
          goto btree_open_out;
        }
      }
      sqlite3_mutex_enter(mutexShared);
      pBt->pNext = sqlite3SharedCacheList;
      sqlite3SharedCacheList = pBt;
      sqlite3_mutex_leave(mutexShared);
    }

  }


  if( p->sharable ){
    int i;
    Btree *pSib;
    for(i=0; i<db->nDb; i++){
      if( (pSib = db->aDb[i].pBt)!=0 && pSib->sharable ){
        while( pSib->pPrev ){ pSib = pSib->pPrev; }
        if( (uptr)p->pBt<(uptr)pSib->pBt ){
          p->pNext = pSib;
          p->pPrev = 0;
          pSib->pPrev = p;
        }else{
          while( pSib->pNext && (uptr)pSib->pNext->pBt<(uptr)p->pBt ){
            pSib = pSib->pNext;
          }
          p->pNext = pSib->pNext;
          p->pPrev = pSib;
          if( p->pNext ){
            p->pNext->pPrev = p;
          }
          pSib->pNext = p;
        }
        break;
      }
    }
  }

  *ppBtree = p;

btree_open_out:
  if( rc!=0 ){
    if( pBt && pBt->pPager ){
      sqlite3PagerClose(pBt->pPager, 0);
    }
    sqlite3_free(pBt);
    sqlite3_free(p);
    *ppBtree = 0;
  }else{
    sqlite3_file *pFile;


    if( sqlite3BtreeSchema(p, 0, 0)==0 ){
      sqlite3PagerSetCachesize(p->pBt->pPager, -2000);
    }

    pFile = sqlite3PagerFile(pBt->pPager);
    if( pFile->pMethods ){
      sqlite3OsFileControlHint(pFile, 30, (void*)&pBt->db);
    }
  }
  if( mutexOpen ){
    assert( sqlite3_mutex_held(mutexOpen) );
    sqlite3_mutex_leave(mutexOpen);
  }
  assert( rc!=0 || sqlite3BtreeConnectionCount(*ppBtree)>0 );
  return rc;
}


static int removeFromSharingList(BtShared *pBt){

  sqlite3_mutex *pMaster;
  BtShared *pList;
  int removed = 0;

  assert( sqlite3_mutex_notheld(pBt->mutex) );
  pMaster = sqlite3MutexAlloc(2);
  sqlite3_mutex_enter(pMaster);
  pBt->nRef--;
  if( pBt->nRef<=0 ){
    if( sqlite3SharedCacheList==pBt ){
      sqlite3SharedCacheList = pBt->pNext;
    }else{
      pList = sqlite3SharedCacheList;
      while( (pList) && pList->pNext!=pBt ){
        pList=pList->pNext;
      }
      if( (pList) ){
        pList->pNext = pBt->pNext;
      }
    }
    if( 1 ){
      sqlite3_mutex_free(pBt->mutex);
    }
    removed = 1;
  }
  sqlite3_mutex_leave(pMaster);
  return removed;


}


static void allocateTempSpace(BtShared *pBt){
  if( !pBt->pTmpSpace ){
    pBt->pTmpSpace = sqlite3PageMalloc( pBt->pageSize );
# 2675 "src/btree.c"
    if( pBt->pTmpSpace ){
      memset(pBt->pTmpSpace, 0, 8);
      pBt->pTmpSpace += 4;
    }
  }
}


static void freeTempSpace(BtShared *pBt){
  if( pBt->pTmpSpace ){
    pBt->pTmpSpace -= 4;
    sqlite3PageFree(pBt->pTmpSpace);
    pBt->pTmpSpace = 0;
  }
}


int sqlite3BtreeClose(Btree *p){
  BtShared *pBt = p->pBt;
  BtCursor *pCur;


  assert( sqlite3_mutex_held(p->db->mutex) );
  sqlite3BtreeEnter(p);
  pCur = pBt->pCursor;
  while( pCur ){
    BtCursor *pTmp = pCur;
    pCur = pCur->pNext;
    if( pTmp->pBtree==p ){
      sqlite3BtreeCloseCursor(pTmp);
    }
  }


  sqlite3BtreeRollback(p, 0, 0);
  sqlite3BtreeLeave(p);


  assert( p->wantToLock==0 && p->locked==0 );
  if( !p->sharable || removeFromSharingList(pBt) ){


    assert( !pBt->pCursor );
    sqlite3PagerClose(pBt->pPager, p->db);
    if( pBt->xFreeSchema && pBt->pSchema ){
      pBt->xFreeSchema(pBt->pSchema);
    }
    sqlite3DbFree(0, pBt->pSchema);
    freeTempSpace(pBt);
    sqlite3_free(pBt);
  }


  assert( p->wantToLock==0 );
  assert( p->locked==0 );
  if( p->pPrev ) p->pPrev->pNext = p->pNext;
  if( p->pNext ) p->pNext->pPrev = p->pPrev;


  sqlite3_free(p);
  return 0;
}
# 2758 "src/btree.c"
int sqlite3BtreeSetCacheSize(Btree *p, int mxPage){
  BtShared *pBt = p->pBt;
  assert( sqlite3_mutex_held(p->db->mutex) );
  sqlite3BtreeEnter(p);
  sqlite3PagerSetCachesize(pBt->pPager, mxPage);
  sqlite3BtreeLeave(p);
  return 0;
}
# 2777 "src/btree.c"
int sqlite3BtreeSetSpillSize(Btree *p, int mxPage){
  BtShared *pBt = p->pBt;
  int res;
  assert( sqlite3_mutex_held(p->db->mutex) );
  sqlite3BtreeEnter(p);
  res = sqlite3PagerSetSpillsize(pBt->pPager, mxPage);
  sqlite3BtreeLeave(p);
  return res;
}


int sqlite3BtreeSetMmapLimit(Btree *p, sqlite3_int64 szMmap){
  BtShared *pBt = p->pBt;
  assert( sqlite3_mutex_held(p->db->mutex) );
  sqlite3BtreeEnter(p);
  sqlite3PagerSetMmapLimit(pBt->pPager, szMmap);
  sqlite3BtreeLeave(p);
  return 0;
}
# 2811 "src/btree.c"
int sqlite3BtreeSetPagerFlags(
  Btree *p,
  unsigned pgFlags
){
  BtShared *pBt = p->pBt;
  assert( sqlite3_mutex_held(p->db->mutex) );
  sqlite3BtreeEnter(p);
  sqlite3PagerSetFlags(pBt->pPager, pgFlags);
  sqlite3BtreeLeave(p);
  return 0;
}
# 2844 "src/btree.c"
int sqlite3BtreeSetPageSize(Btree *p, int pageSize, int nReserve, int iFix){
  int rc = 0;
  BtShared *pBt = p->pBt;
  assert( nReserve>=-1 && nReserve<=255 );
  sqlite3BtreeEnter(p);


  if( pBt->btsFlags & 0x0002 ){
    sqlite3BtreeLeave(p);
    return 8;
  }
  if( nReserve<0 ){
    nReserve = pBt->pageSize - pBt->usableSize;
  }
  assert( nReserve>=0 && nReserve<=255 );
  if( pageSize>=512 && pageSize<=65536 &&
        ((pageSize-1)&pageSize)==0 ){
    assert( (pageSize & 7)==0 );
    assert( !pBt->pCursor );
    pBt->pageSize = (u32)pageSize;
    freeTempSpace(pBt);
  }
  rc = sqlite3PagerSetPagesize(pBt->pPager, &pBt->pageSize, nReserve);
  pBt->usableSize = pBt->pageSize - (u16)nReserve;
  if( iFix ) pBt->btsFlags |= 0x0002;
  sqlite3BtreeLeave(p);
  return rc;
}


int sqlite3BtreeGetPageSize(Btree *p){
  return p->pBt->pageSize;
}
# 2892 "src/btree.c"
int sqlite3BtreeGetReserveNoMutex(Btree *p){
  int n;
  assert( sqlite3_mutex_held(p->pBt->mutex) );
  n = p->pBt->pageSize - p->pBt->usableSize;
  return n;
}
# 2908 "src/btree.c"
int sqlite3BtreeGetOptimalReserve(Btree *p){
  int n;
  sqlite3BtreeEnter(p);
  n = sqlite3BtreeGetReserveNoMutex(p);


  sqlite3BtreeLeave(p);
  return n;
}


int sqlite3BtreeMaxPageCount(Btree *p, int mxPage){
  int n;
  sqlite3BtreeEnter(p);
  n = sqlite3PagerMaxPageCount(p->pBt->pPager, mxPage);
  sqlite3BtreeLeave(p);
  return n;
}
# 2951 "src/btree.c"
int sqlite3BtreeSecureDelete(Btree *p, int newFlag){
  int b;
  if( p==0 ) return 0;
  sqlite3BtreeEnter(p);
  assert( 0x0008==0x0004*2 );
  assert( 0x000c==(0x0008|0x0004) );
  if( newFlag>=0 ){
    p->pBt->btsFlags &= ~0x000c;
    p->pBt->btsFlags |= 0x0004*newFlag;
  }
  b = (p->pBt->btsFlags & 0x000c)/0x0004;
  sqlite3BtreeLeave(p);
  return b;
}


int sqlite3BtreeSetAutoVacuum(Btree *p, int autoVacuum){


  BtShared *pBt = p->pBt;
  int rc = 0;
  u8 av = (u8)autoVacuum;

  sqlite3BtreeEnter(p);
  if( (pBt->btsFlags & 0x0002)!=0 && (av ?1:0)!=pBt->autoVacuum ){
    rc = 8;
  }else{
    pBt->autoVacuum = av ?1:0;
    pBt->incrVacuum = av==2 ?1:0;
  }
  sqlite3BtreeLeave(p);
  return rc;

}


int sqlite3BtreeGetAutoVacuum(Btree *p){


  int rc;
  sqlite3BtreeEnter(p);
  rc = (
    (!p->pBt->autoVacuum)?0:
    (!p->pBt->incrVacuum)?1:
    2
  );
  sqlite3BtreeLeave(p);
  return rc;

}
# 3040 "src/btree.c"
static int newDatabase(BtShared*);
# 3052 "src/btree.c"
static int lockBtree(BtShared *pBt){
  int rc;
  MemPage *pPage1;
  u32 nPage;
  u32 nPageFile = 0;
  u32 nPageHeader;

  assert( sqlite3_mutex_held(pBt->mutex) );
  assert( pBt->pPage1==0 );
  rc = sqlite3PagerSharedLock(pBt->pPager);
  if( rc!=0 ) return rc;
  rc = btreeGetPage(pBt, 1, &pPage1, 0);
  if( rc!=0 ) return rc;


  nPage = nPageHeader = sqlite3Get4byte(28+(u8*)pPage1->aData);
  sqlite3PagerPagecount(pBt->pPager, (int*)&nPageFile);
  if( nPage==0 || memcmp(24+(u8*)pPage1->aData, 92+(u8*)pPage1->aData,4)!=0 ){
    nPage = nPageFile;
  }
  if( (pBt->db->flags & 0x02000000)!=0 ){
    nPage = 0;
  }
  if( nPage>0 ){
    u32 pageSize;
    u32 usableSize;
    u8 *page1 = pPage1->aData;
    rc = 26;


    if( memcmp(page1, zMagicHeader, 16)!=0 ){
      goto page1_init_failed;
    }
# 3097 "src/btree.c"
    if( page1[18]>2 ){
      pBt->btsFlags |= 0x0001;
    }
    if( page1[19]>2 ){
      goto page1_init_failed;
    }
# 3112 "src/btree.c"
    if( page1[19]==2 && (pBt->btsFlags & 0x0020)==0 ){
      int isOpen = 0;
      rc = sqlite3PagerOpenWal(pBt->pPager, &isOpen);
      if( rc!=0 ){
        goto page1_init_failed;
      }else{
        ;
        if( isOpen==0 ){
          releasePageOne(pPage1);
          return 0;
        }
      }
      rc = 26;
    }else{
      ;
    }
# 3136 "src/btree.c"
    if( memcmp(&page1[21], "\100\040\040",3)!=0 ){
      goto page1_init_failed;
    }


    pageSize = (page1[16]<<8) | (page1[17]<<16);


    if( ((pageSize-1)&pageSize)!=0
     || pageSize>65536
     || pageSize<=256
    ){
      goto page1_init_failed;
    }
    pBt->btsFlags |= 0x0002;
    assert( (pageSize & 7)==0 );


    usableSize = pageSize - page1[20];
    if( (u32)pageSize!=pBt->pageSize ){


      releasePageOne(pPage1);
      pBt->usableSize = usableSize;
      pBt->pageSize = pageSize;
      freeTempSpace(pBt);
      rc = sqlite3PagerSetPagesize(pBt->pPager, &pBt->pageSize,
                                   pageSize-usableSize);
      return rc;
    }
    if( sqlite3WritableSchema(pBt->db)==0 && nPage>nPageFile ){
      rc = sqlite3CorruptError(3177);
      goto page1_init_failed;
    }


    if( usableSize<480 ){
      goto page1_init_failed;
    }
    pBt->pageSize = pageSize;
    pBt->usableSize = usableSize;

    pBt->autoVacuum = (sqlite3Get4byte(&page1[36 + 4*4])?1:0);
    pBt->incrVacuum = (sqlite3Get4byte(&page1[36 + 7*4])?1:0);

  }
# 3207 "src/btree.c"
  pBt->maxLocal = (u16)((pBt->usableSize-12)*64/255 - 23);
  pBt->minLocal = (u16)((pBt->usableSize-12)*32/255 - 23);
  pBt->maxLeaf = (u16)(pBt->usableSize - 35);
  pBt->minLeaf = (u16)((pBt->usableSize-12)*32/255 - 23);
  if( pBt->maxLocal>127 ){
    pBt->max1bytePayload = 127;
  }else{
    pBt->max1bytePayload = (u8)pBt->maxLocal;
  }
  assert( pBt->maxLeaf + 23 <= ((int)(pBt->pageSize-8)) );
  pBt->pPage1 = pPage1;
  pBt->nPage = nPage;
  return 0;

page1_init_failed:
  releasePageOne(pPage1);
  pBt->pPage1 = 0;
  return rc;
}
# 3259 "src/btree.c"
static void unlockBtreeIfUnused(BtShared *pBt){
  assert( sqlite3_mutex_held(pBt->mutex) );
  assert( countValidCursors(pBt,0)==0 || pBt->inTransaction>0 );
  if( pBt->inTransaction==0 && pBt->pPage1!=0 ){
    MemPage *pPage1 = pBt->pPage1;
    assert( pPage1->aData );
    assert( sqlite3PagerRefcount(pBt->pPager)==1 );
    pBt->pPage1 = 0;
    releasePageOne(pPage1);
  }
}


static int newDatabase(BtShared *pBt){
  MemPage *pP1;
  unsigned char *data;
  int rc;

  assert( sqlite3_mutex_held(pBt->mutex) );
  if( pBt->nPage>0 ){
    return 0;
  }
  pP1 = pBt->pPage1;
  assert( pP1!=0 );
  data = pP1->aData;
  rc = sqlite3PagerWrite(pP1->pDbPage);
  if( rc ) return rc;
  memcpy(data, zMagicHeader, sizeof(zMagicHeader));
  assert( sizeof(zMagicHeader)==16 );
  data[16] = (u8)((pBt->pageSize>>8)&0xff);
  data[17] = (u8)((pBt->pageSize>>16)&0xff);
  data[18] = 1;
  data[19] = 1;
  assert( pBt->usableSize<=pBt->pageSize && pBt->usableSize+255>=pBt->pageSize);
  data[20] = (u8)(pBt->pageSize - pBt->usableSize);
  data[21] = 64;
  data[22] = 32;
  data[23] = 32;
  memset(&data[24], 0, 100-24);
  zeroPage(pP1, 0x01|0x08|0x04 );
  pBt->btsFlags |= 0x0002;

  assert( pBt->autoVacuum==1 || pBt->autoVacuum==0 );
  assert( pBt->incrVacuum==1 || pBt->incrVacuum==0 );
  sqlite3Put4byte(&data[36 + 4*4], pBt->autoVacuum);
  sqlite3Put4byte(&data[36 + 7*4], pBt->incrVacuum);

  pBt->nPage = 1;
  data[31] = 1;
  return 0;
}


int sqlite3BtreeNewDb(Btree *p){
  int rc;
  sqlite3BtreeEnter(p);
  p->pBt->nPage = 0;
  rc = newDatabase(p->pBt);
  sqlite3BtreeLeave(p);
  return rc;
}
# 3364 "src/btree.c"
int sqlite3BtreeBeginTrans(Btree *p, int wrflag, int *pSchemaVersion){
  BtShared *pBt = p->pBt;
  int rc = 0;

  sqlite3BtreeEnter(p);
  assert( p->pBt->inTransaction!=0 || p->pBt->nTransaction==0 ); assert( p->pBt->inTransaction>=p->inTrans );;


  if( p->inTrans==2 || (p->inTrans==1 && !wrflag) ){
    goto trans_begun;
  }
  assert( pBt->inTransaction==2 || (pBt->bDoTruncate)==0 );

  if( (p->db->flags & 0x02000000)
   && sqlite3PagerIsreadonly(pBt->pPager)==0
  ){
    pBt->btsFlags &= ~0x0001;
  }


  if( (pBt->btsFlags & 0x0001)!=0 && wrflag ){
    rc = 8;
    goto trans_begun;
  }


  {
    sqlite3 *pBlock = 0;


    if( (wrflag && pBt->inTransaction==2)
     || (pBt->btsFlags & 0x0080)!=0
    ){
      pBlock = pBt->pWriter->db;
    }else if( wrflag>1 ){
      BtLock *pIter;
      for(pIter=pBt->pLock; pIter; pIter=pIter->pNext){
        if( pIter->pBtree!=p ){
          pBlock = pIter->pBtree->db;
          break;
        }
      }
    }
    if( pBlock ){
      ;
      rc = (6 | (1<<8));
      goto trans_begun;
    }
  }


  rc = querySharedCacheTableLock(p, 1, 1);
  if( 0!=rc ) goto trans_begun;

  pBt->btsFlags &= ~0x0010;
  if( pBt->nPage==0 ) pBt->btsFlags |= 0x0010;
  do {


    while( pBt->pPage1==0 && 0==(rc = lockBtree(pBt)) );

    if( rc==0 && wrflag ){
      if( (pBt->btsFlags & 0x0001)!=0 ){
        rc = 8;
      }else{
        rc = sqlite3PagerBegin(pBt->pPager,wrflag>1,sqlite3TempInMemory(p->db));
        if( rc==0 ){
          rc = newDatabase(pBt);
        }else if( rc==(5 | (2<<8)) && pBt->inTransaction==0 ){


          rc = 5;
        }
      }
    }

    if( rc!=0 ){
      unlockBtreeIfUnused(pBt);
    }
  }while( (rc&0xFF)==5 && pBt->inTransaction==0 &&
          btreeInvokeBusyHandler(pBt) );
  ;

  if( rc==0 ){
    if( p->inTrans==0 ){
      pBt->nTransaction++;

      if( p->sharable ){
        assert( p->lock.pBtree==p && p->lock.iTable==1 );
        p->lock.eLock = 1;
        p->lock.pNext = pBt->pLock;
        pBt->pLock = &p->lock;
      }

    }
    p->inTrans = (wrflag?2:1);
    if( p->inTrans>pBt->inTransaction ){
      pBt->inTransaction = p->inTrans;
    }
    if( wrflag ){
      MemPage *pPage1 = pBt->pPage1;

      assert( !pBt->pWriter );
      pBt->pWriter = p;
      pBt->btsFlags &= ~0x0040;
      if( wrflag>1 ) pBt->btsFlags |= 0x0040;
# 3492 "src/btree.c"
      if( pBt->nPage!=sqlite3Get4byte(&pPage1->aData[28]) ){
        rc = sqlite3PagerWrite(pPage1->pDbPage);
        if( rc==0 ){
          sqlite3Put4byte(&pPage1->aData[28], pBt->nPage);
        }
      }
    }
  }

trans_begun:
  if( rc==0 ){
    if( pSchemaVersion ){
      *pSchemaVersion = sqlite3Get4byte(&pBt->pPage1->aData[40]);
    }
    if( wrflag ){


      rc = sqlite3PagerOpenSavepoint(pBt->pPager, p->db->nSavepoint);
    }
  }

  assert( p->pBt->inTransaction!=0 || p->pBt->nTransaction==0 ); assert( p->pBt->inTransaction>=p->inTrans );;
  sqlite3BtreeLeave(p);
  return rc;
}
# 3527 "src/btree.c"
static int setChildPtrmaps(MemPage *pPage){
  int i;
  int nCell;
  int rc;
  BtShared *pBt = pPage->pBt;
  Pgno pgno = pPage->pgno;

  assert( sqlite3_mutex_held(pPage->pBt->mutex) );
  rc = pPage->isInit ? 0 : btreeInitPage(pPage);
  if( rc!=0 ) return rc;
  nCell = pPage->nCell;

  for(i=0; i<nCell; i++){
    u8 *pCell = ((pPage)->aData + ((pPage)->maskPage & __builtin_bswap16(*(u16*)(&(pPage)->aCellIdx[2*(i)]))));

    ptrmapPutOvflPtr(pPage, pPage, pCell, &rc);

    if( !pPage->leaf ){
      Pgno childPgno = sqlite3Get4byte(pCell);
      ptrmapPut(pBt, childPgno, 5, pgno, &rc);
    }
  }

  if( !pPage->leaf ){
    Pgno childPgno = sqlite3Get4byte(&pPage->aData[pPage->hdrOffset+8]);
    ptrmapPut(pBt, childPgno, 5, pgno, &rc);
  }

  return rc;
}
# 3572 "src/btree.c"
static int modifyPagePointer(MemPage *pPage, Pgno iFrom, Pgno iTo, u8 eType){
  assert( sqlite3_mutex_held(pPage->pBt->mutex) );
  assert( sqlite3PagerIswriteable(pPage->pDbPage) );
  if( eType==4 ){

    if( sqlite3Get4byte(pPage->aData)!=iFrom ){
      return sqlite3CorruptError(3578);
    }
    sqlite3Put4byte(pPage->aData, iTo);
  }else{
    int i;
    int nCell;
    int rc;

    rc = pPage->isInit ? 0 : btreeInitPage(pPage);
    if( rc ) return rc;
    nCell = pPage->nCell;

    for(i=0; i<nCell; i++){
      u8 *pCell = ((pPage)->aData + ((pPage)->maskPage & __builtin_bswap16(*(u16*)(&(pPage)->aCellIdx[2*(i)]))));
      if( eType==3 ){
        CellInfo info;
        pPage->xParseCell(pPage, pCell, &info);
        if( info.nLocal<info.nPayload ){
          if( pCell+info.nSize > pPage->aData+pPage->pBt->usableSize ){
            return sqlite3CorruptError(3597);
          }
          if( iFrom==sqlite3Get4byte(pCell+info.nSize-4) ){
            sqlite3Put4byte(pCell+info.nSize-4, iTo);
            break;
          }
        }
      }else{
        if( sqlite3Get4byte(pCell)==iFrom ){
          sqlite3Put4byte(pCell, iTo);
          break;
        }
      }
    }

    if( i==nCell ){
      if( eType!=5 ||
          sqlite3Get4byte(&pPage->aData[pPage->hdrOffset+8])!=iFrom ){
        return sqlite3CorruptError(3615);
      }
      sqlite3Put4byte(&pPage->aData[pPage->hdrOffset+8], iTo);
    }
  }
  return 0;
}
# 3633 "src/btree.c"
static int relocatePage(
  BtShared *pBt,
  MemPage *pDbPage,
  u8 eType,
  Pgno iPtrPage,
  Pgno iFreePage,
  int isCommit
){
  MemPage *pPtrPage;
  Pgno iDbPage = pDbPage->pgno;
  Pager *pPager = pBt->pPager;
  int rc;

  assert( eType==4 || eType==3 ||
      eType==5 || eType==1 );
  assert( sqlite3_mutex_held(pBt->mutex) );
  assert( pDbPage->pBt==pBt );
  if( iDbPage<3 ) return sqlite3CorruptError(3650);


                                           ;
  rc = sqlite3PagerMovepage(pPager, pDbPage->pDbPage, iFreePage, isCommit);
  if( rc!=0 ){
    return rc;
  }
  pDbPage->pgno = iFreePage;
# 3669 "src/btree.c"
  if( eType==5 || eType==1 ){
    rc = setChildPtrmaps(pDbPage);
    if( rc!=0 ){
      return rc;
    }
  }else{
    Pgno nextOvfl = sqlite3Get4byte(pDbPage->aData);
    if( nextOvfl!=0 ){
      ptrmapPut(pBt, nextOvfl, 4, iFreePage, &rc);
      if( rc!=0 ){
        return rc;
      }
    }
  }


  if( eType!=1 ){
    rc = btreeGetPage(pBt, iPtrPage, &pPtrPage, 0);
    if( rc!=0 ){
      return rc;
    }
    rc = sqlite3PagerWrite(pPtrPage->pDbPage);
    if( rc!=0 ){
      releasePage(pPtrPage);
      return rc;
    }
    rc = modifyPagePointer(pPtrPage, iDbPage, iFreePage, eType);
    releasePage(pPtrPage);
    if( rc==0 ){
      ptrmapPut(pBt, iFreePage, eType, iPtrPage, &rc);
    }
  }
  return rc;
}


static int allocateBtreePage(BtShared *, MemPage **, Pgno *, Pgno, u8);
# 3727 "src/btree.c"
static int incrVacuumStep(BtShared *pBt, Pgno nFin, Pgno iLastPg, int bCommit){
  Pgno nFreeList;
  int rc;

  assert( sqlite3_mutex_held(pBt->mutex) );
  assert( iLastPg>nFin );

  if( !(ptrmapPageno((pBt), (iLastPg))==(iLastPg)) && iLastPg!=((Pgno)((sqlite3PendingByte/((pBt)->pageSize))+1)) ){
    u8 eType;
    Pgno iPtrPage;

    nFreeList = sqlite3Get4byte(&pBt->pPage1->aData[36]);
    if( nFreeList==0 ){
      return 101;
    }

    rc = ptrmapGet(pBt, iLastPg, &eType, &iPtrPage);
    if( rc!=0 ){
      return rc;
    }
    if( eType==1 ){
      return sqlite3CorruptError(3748);
    }

    if( eType==2 ){
      if( bCommit==0 ){


        Pgno iFreePg;
        MemPage *pFreePg;
        rc = allocateBtreePage(pBt, &pFreePg, &iFreePg, iLastPg, 1);
        if( rc!=0 ){
          return rc;
        }
        assert( iFreePg==iLastPg );
        releasePage(pFreePg);
      }
    } else {
      Pgno iFreePg;
      MemPage *pLastPg;
      u8 eMode = 0;
      Pgno iNear = 0;

      rc = btreeGetPage(pBt, iLastPg, &pLastPg, 0);
      if( rc!=0 ){
        return rc;
      }
# 3785 "src/btree.c"
      if( bCommit==0 ){
        eMode = 2;
        iNear = nFin;
      }
      do {
        MemPage *pFreePg;
        rc = allocateBtreePage(pBt, &pFreePg, &iFreePg, iNear, eMode);
        if( rc!=0 ){
          releasePage(pLastPg);
          return rc;
        }
        releasePage(pFreePg);
      }while( bCommit && iFreePg>nFin );
      assert( iFreePg<iLastPg );

      rc = relocatePage(pBt, pLastPg, eType, iPtrPage, iFreePg, bCommit);
      releasePage(pLastPg);
      if( rc!=0 ){
        return rc;
      }
    }
  }

  if( bCommit==0 ){
    do {
      iLastPg--;
    }while( iLastPg==((Pgno)((sqlite3PendingByte/((pBt)->pageSize))+1)) || (ptrmapPageno((pBt), (iLastPg))==(iLastPg)) );
    pBt->bDoTruncate = 1;
    pBt->nPage = iLastPg;
  }
  return 0;
}


static Pgno finalDbSize(BtShared *pBt, Pgno nOrig, Pgno nFree){
  int nEntry;
  Pgno nPtrmap;
  Pgno nFin;

  nEntry = pBt->usableSize/5;
  nPtrmap = (nFree-nOrig+ptrmapPageno(pBt, nOrig)+nEntry)/nEntry;
  nFin = nOrig - nFree - nPtrmap;
  if( nOrig>((Pgno)((sqlite3PendingByte/((pBt)->pageSize))+1)) && nFin<((Pgno)((sqlite3PendingByte/((pBt)->pageSize))+1)) ){
    nFin--;
  }
  while( (ptrmapPageno((pBt), (nFin))==(nFin)) || nFin==((Pgno)((sqlite3PendingByte/((pBt)->pageSize))+1)) ){
    nFin--;
  }

  return nFin;
}
# 3849 "src/btree.c"
int sqlite3BtreeIncrVacuum(Btree *p){
  int rc;
  BtShared *pBt = p->pBt;

  sqlite3BtreeEnter(p);
  assert( pBt->inTransaction==2 && p->inTrans==2 );
  if( !pBt->autoVacuum ){
    rc = 101;
  }else{
    Pgno nOrig = btreePagecount(pBt);
    Pgno nFree = sqlite3Get4byte(&pBt->pPage1->aData[36]);
    Pgno nFin = finalDbSize(pBt, nOrig, nFree);

    if( nOrig<nFin ){
      rc = sqlite3CorruptError(3863);
    }else if( nFree>0 ){
      rc = saveAllCursors(pBt, 0, 0);
      if( rc==0 ){
        invalidateAllOverflowCache(pBt);
        rc = incrVacuumStep(pBt, nFin, nOrig, 0);
      }
      if( rc==0 ){
        rc = sqlite3PagerWrite(pBt->pPage1->pDbPage);
        sqlite3Put4byte(&pBt->pPage1->aData[28], pBt->nPage);
      }
    }else{
      rc = 101;
    }
  }
  sqlite3BtreeLeave(p);
  return rc;
}
# 3891 "src/btree.c"
static int autoVacuumCommit(BtShared *pBt){
  int rc = 0;
  Pager *pPager = pBt->pPager;
 

  assert( sqlite3_mutex_held(pBt->mutex) );
  invalidateAllOverflowCache(pBt);
  assert(pBt->autoVacuum);
  if( !pBt->incrVacuum ){
    Pgno nFin;
    Pgno nFree;
    Pgno iFree;
    Pgno nOrig;

    nOrig = btreePagecount(pBt);
    if( (ptrmapPageno((pBt), (nOrig))==(nOrig)) || nOrig==((Pgno)((sqlite3PendingByte/((pBt)->pageSize))+1)) ){


      return sqlite3CorruptError(3911);
    }

    nFree = sqlite3Get4byte(&pBt->pPage1->aData[36]);
    nFin = finalDbSize(pBt, nOrig, nFree);
    if( nFin>nOrig ) return sqlite3CorruptError(3916);
    if( nFin<nOrig ){
      rc = saveAllCursors(pBt, 0, 0);
    }
    for(iFree=nOrig; iFree>nFin && rc==0; iFree--){
      rc = incrVacuumStep(pBt, nFin, iFree, 1);
    }
    if( (rc==101 || rc==0) && nFree>0 ){
      rc = sqlite3PagerWrite(pBt->pPage1->pDbPage);
      sqlite3Put4byte(&pBt->pPage1->aData[32], 0);
      sqlite3Put4byte(&pBt->pPage1->aData[36], 0);
      sqlite3Put4byte(&pBt->pPage1->aData[28], nFin);
      pBt->bDoTruncate = 1;
      pBt->nPage = nFin;
    }
    if( rc!=0 ){
      sqlite3PagerRollback(pPager);
    }
  }

  assert( nRef>=sqlite3PagerRefcount(pPager) );
  return rc;
}
# 3970 "src/btree.c"
int sqlite3BtreeCommitPhaseOne(Btree *p, const char *zMaster){
  int rc = 0;
  if( p->inTrans==2 ){
    BtShared *pBt = p->pBt;
    sqlite3BtreeEnter(p);

    if( pBt->autoVacuum ){
      rc = autoVacuumCommit(pBt);
      if( rc!=0 ){
        sqlite3BtreeLeave(p);
        return rc;
      }
    }
    if( pBt->bDoTruncate ){
      sqlite3PagerTruncateImage(pBt->pPager, pBt->nPage);
    }

    rc = sqlite3PagerCommitPhaseOne(pBt->pPager, zMaster, 0);
    sqlite3BtreeLeave(p);
  }
  return rc;
}


static void btreeEndTransaction(Btree *p){
  BtShared *pBt = p->pBt;
  sqlite3 *db = p->db;
  assert( sqlite3BtreeHoldsMutex(p) );


  pBt->bDoTruncate = 0;

  if( p->inTrans>0 && db->nVdbeRead>1 ){


    downgradeAllSharedCacheTableLocks(p);
    p->inTrans = 1;
  }else{


    if( p->inTrans!=0 ){
      clearAllSharedCacheTableLocks(p);
      pBt->nTransaction--;
      if( 0==pBt->nTransaction ){
        pBt->inTransaction = 0;
      }
    }


    p->inTrans = 0;
    unlockBtreeIfUnused(pBt);
  }

  assert( p->pBt->inTransaction!=0 || p->pBt->nTransaction==0 ); assert( p->pBt->inTransaction>=p->inTrans );;
}
# 4059 "src/btree.c"
int sqlite3BtreeCommitPhaseTwo(Btree *p, int bCleanup){

  if( p->inTrans==0 ) return 0;
  sqlite3BtreeEnter(p);
  assert( p->pBt->inTransaction!=0 || p->pBt->nTransaction==0 ); assert( p->pBt->inTransaction>=p->inTrans );;


  if( p->inTrans==2 ){
    int rc;
    BtShared *pBt = p->pBt;
    assert( pBt->inTransaction==2 );
    assert( pBt->nTransaction>0 );
    rc = sqlite3PagerCommitPhaseTwo(pBt->pPager);
    if( rc!=0 && bCleanup==0 ){
      sqlite3BtreeLeave(p);
      return rc;
    }
    p->iDataVersion--;
    pBt->inTransaction = 1;
    btreeClearHasContent(pBt);
  }

  btreeEndTransaction(p);
  sqlite3BtreeLeave(p);
  return 0;
}


int sqlite3BtreeCommit(Btree *p){
  int rc;
  sqlite3BtreeEnter(p);
  rc = sqlite3BtreeCommitPhaseOne(p, 0);
  if( rc==0 ){
    rc = sqlite3BtreeCommitPhaseTwo(p, 0);
  }
  sqlite3BtreeLeave(p);
  return rc;
}
# 4128 "src/btree.c"
int sqlite3BtreeTripAllCursors(Btree *pBtree, int errCode, int writeOnly){
  BtCursor *p;
  int rc = 0;

  assert( (writeOnly==0 || writeOnly==1) && 0x01==1 );
  if( pBtree ){
    sqlite3BtreeEnter(pBtree);
    for(p=pBtree->pBt->pCursor; p; p=p->pNext){
      if( writeOnly && (p->curFlags & 0x01)==0 ){
        if( p->eState==0 || p->eState==2 ){
          rc = saveCursorPosition(p);
          if( rc!=0 ){
            (void)sqlite3BtreeTripAllCursors(pBtree, rc, 0);
            break;
          }
        }
      }else{
        sqlite3BtreeClearCursor(p);
        p->eState = 4;
        p->skipNext = errCode;
      }
      btreeReleaseAllCursorPages(p);
    }
    sqlite3BtreeLeave(pBtree);
  }
  return rc;
}


static void btreeSetNPage(BtShared *pBt, MemPage *pPage1){
  int nPage = sqlite3Get4byte(&pPage1->aData[28]);
  ;
  if( nPage==0 ) sqlite3PagerPagecount(pBt->pPager, &nPage);
  ;
  pBt->nPage = nPage;
}
# 4179 "src/btree.c"
int sqlite3BtreeRollback(Btree *p, int tripCode, int writeOnly){
  int rc;
  BtShared *pBt = p->pBt;
  MemPage *pPage1;

  assert( writeOnly==1 || writeOnly==0 );
  assert( tripCode==(4 | (2<<8)) || tripCode==0 );
  sqlite3BtreeEnter(p);
  if( tripCode==0 ){
    rc = tripCode = saveAllCursors(pBt, 0, 0);
    if( rc ) writeOnly = 0;
  }else{
    rc = 0;
  }
  if( tripCode ){
    int rc2 = sqlite3BtreeTripAllCursors(p, tripCode, writeOnly);
    assert( rc==0 || (writeOnly==0 && rc2==0) );
    if( rc2!=0 ) rc = rc2;
  }
  assert( p->pBt->inTransaction!=0 || p->pBt->nTransaction==0 ); assert( p->pBt->inTransaction>=p->inTrans );;

  if( p->inTrans==2 ){
    int rc2;

    assert( 2==pBt->inTransaction );
    rc2 = sqlite3PagerRollback(pBt->pPager);
    if( rc2!=0 ){
      rc = rc2;
    }


    if( btreeGetPage(pBt, 1, &pPage1, 0)==0 ){
      btreeSetNPage(pBt, pPage1);
      releasePageOne(pPage1);
    }
    assert( countValidCursors(pBt, 1)==0 );
    pBt->inTransaction = 1;
    btreeClearHasContent(pBt);
  }

  btreeEndTransaction(p);
  sqlite3BtreeLeave(p);
  return rc;
}
# 4244 "src/btree.c"
int sqlite3BtreeBeginStmt(Btree *p, int iStatement){
  int rc;
  BtShared *pBt = p->pBt;
  sqlite3BtreeEnter(p);
  assert( p->inTrans==2 );
  assert( (pBt->btsFlags & 0x0001)==0 );
  assert( iStatement>0 );
  assert( iStatement>p->db->nSavepoint );
  assert( pBt->inTransaction==2 );


  rc = sqlite3PagerOpenSavepoint(pBt->pPager, iStatement);
  sqlite3BtreeLeave(p);
  return rc;
}
# 4275 "src/btree.c"
int sqlite3BtreeSavepoint(Btree *p, int op, int iSavepoint){
  int rc = 0;
  if( p && p->inTrans==2 ){
    BtShared *pBt = p->pBt;
    assert( op==1 || op==2 );
    assert( iSavepoint>=0 || (iSavepoint==-1 && op==2) );
    sqlite3BtreeEnter(p);
    if( op==2 ){
      rc = saveAllCursors(pBt, 0, 0);
    }
    if( rc==0 ){
      rc = sqlite3PagerSavepoint(pBt->pPager, op, iSavepoint);
    }
    if( rc==0 ){
      if( iSavepoint<0 && (pBt->btsFlags & 0x0010)!=0 ){
        pBt->nPage = 0;
      }
      rc = newDatabase(pBt);
      btreeSetNPage(pBt, pBt->pPage1);


      assert( (sqlite3Config.neverCorrupt==0) || pBt->nPage>0 );
    }
    sqlite3BtreeLeave(p);
  }
  return rc;
}
# 4346 "src/btree.c"
static int btreeCursor(
  Btree *p,
  int iTable,
  int wrFlag,
  struct KeyInfo *pKeyInfo,
  BtCursor *pCur
){
  BtShared *pBt = p->pBt;
  BtCursor *pX;

  assert( sqlite3BtreeHoldsMutex(p) );
  assert( wrFlag==0
       || wrFlag==0x00000004
       || wrFlag==(0x00000004|0x00000008)
  );


  assert( hasSharedCacheTableLock(p, iTable, pKeyInfo!=0, (wrFlag?2:1)) );
  assert( wrFlag==0 || !hasReadConflicts(p, iTable) );


  assert( p->inTrans>0 );
  assert( wrFlag==0 || p->inTrans==2 );
  assert( pBt->pPage1 && pBt->pPage1->aData );
  assert( wrFlag==0 || (pBt->btsFlags & 0x0001)==0 );

  if( wrFlag ){
    allocateTempSpace(pBt);
    if( pBt->pTmpSpace==0 ) return 7;
  }
  if( iTable==1 && btreePagecount(pBt)==0 ){
    assert( wrFlag==0 );
    iTable = 0;
  }


  pCur->pgnoRoot = (Pgno)iTable;
  pCur->iPage = -1;
  pCur->pKeyInfo = pKeyInfo;
  pCur->pBtree = p;
  pCur->pBt = pBt;
  pCur->curFlags = wrFlag ? 0x01 : 0;
  pCur->curPagerFlags = wrFlag ? 0 : 0x02;


  for(pX=pBt->pCursor; pX; pX=pX->pNext){
    if( pX->pgnoRoot==(Pgno)iTable ){
      pX->curFlags |= 0x20;
      pCur->curFlags |= 0x20;
    }
  }
  pCur->pNext = pBt->pCursor;
  pBt->pCursor = pCur;
  pCur->eState = 1;
  return 0;
}
int sqlite3BtreeCursor(
  Btree *p,
  int iTable,
  int wrFlag,
  struct KeyInfo *pKeyInfo,
  BtCursor *pCur
){
  int rc;
  if( iTable<1 ){
    rc = sqlite3CorruptError(4415);
  }else{
    sqlite3BtreeEnter(p);
    rc = btreeCursor(p, iTable, wrFlag, pKeyInfo, pCur);
    sqlite3BtreeLeave(p);
  }
  return rc;
}
# 4432 "src/btree.c"
int sqlite3BtreeCursorSize(void){
  return (((sizeof(BtCursor))+7)&~7);
}
# 4444 "src/btree.c"
void sqlite3BtreeCursorZero(BtCursor *p){
  memset(p, 0, ((int)((char*)&((BtCursor*)0)->pBt)));
}


int sqlite3BtreeCloseCursor(BtCursor *pCur){
  Btree *pBtree = pCur->pBtree;
  if( pBtree ){
    BtShared *pBt = pCur->pBt;
    sqlite3BtreeEnter(pBtree);
    assert( pBt->pCursor!=0 );
    if( pBt->pCursor==pCur ){
      pBt->pCursor = pCur->pNext;
    }else{
      BtCursor *pPrev = pBt->pCursor;
      do{
        if( pPrev->pNext==pCur ){
          pPrev->pNext = pCur->pNext;
          break;
        }
        pPrev = pPrev->pNext;
      }while( (pPrev) );
    }
    btreeReleaseAllCursorPages(pCur);
    unlockBtreeIfUnused(pBt);
    sqlite3_free(pCur->aOverflow);
    sqlite3_free(pCur->pKey);
    sqlite3BtreeLeave(pBtree);
    pCur->pBtree = 0;
  }
  return 0;
}
# 4506 "src/btree.c"
static void getCellInfo(BtCursor *pCur){
  if( pCur->info.nSize==0 ){
    pCur->curFlags |= 0x02;
    btreeParseCell(pCur->pPage,pCur->ix,&pCur->info);
  }else{
    ;
  }
}
# 4525 "src/btree.c"
int sqlite3BtreeCursorIsValidNN(BtCursor *pCur){
  assert( pCur!=0 );
  return pCur->eState==0;
}


i64 sqlite3BtreeIntegerKey(BtCursor *pCur){
  assert( cursorHoldsMutex(pCur) );
  assert( pCur->eState==0 );
  assert( pCur->curIntKey );
  getCellInfo(pCur);
  return pCur->info.nKey;
}
# 4567 "src/btree.c"
u32 sqlite3BtreePayloadSize(BtCursor *pCur){
  assert( cursorHoldsMutex(pCur) );
  assert( pCur->eState==0 );
  getCellInfo(pCur);
  return pCur->info.nPayload;
}
# 4587 "src/btree.c"
sqlite3_int64 sqlite3BtreeMaxRecordSize(BtCursor *pCur){
  assert( cursorHoldsMutex(pCur) );
  assert( pCur->eState==0 );
  return pCur->pBt->pageSize * (sqlite3_int64)pCur->pBt->nPage;
}
# 4612 "src/btree.c"
static int getOverflowPage(
  BtShared *pBt,
  Pgno ovfl,
  MemPage **ppPage,
  Pgno *pPgnoNext
){
  Pgno next = 0;
  MemPage *pPage = 0;
  int rc = 0;

  assert( sqlite3_mutex_held(pBt->mutex) );
  assert(pPgnoNext);
# 4632 "src/btree.c"
  if( pBt->autoVacuum ){
    Pgno pgno;
    Pgno iGuess = ovfl+1;
    u8 eType;

    while( (ptrmapPageno((pBt), (iGuess))==(iGuess)) || iGuess==((Pgno)((sqlite3PendingByte/((pBt)->pageSize))+1)) ){
      iGuess++;
    }

    if( iGuess<=btreePagecount(pBt) ){
      rc = ptrmapGet(pBt, iGuess, &eType, &pgno);
      if( rc==0 && eType==4 && pgno==ovfl ){
        next = iGuess;
        rc = 101;
      }
    }
  }


  assert( next==0 || rc==101 );
  if( rc==0 ){
    rc = btreeGetPage(pBt, ovfl, &pPage, (ppPage==0) ? 0x02 : 0);
    assert( rc==0 || pPage==0 );
    if( rc==0 ){
      next = sqlite3Get4byte(pPage->aData);
    }
  }

  *pPgnoNext = next;
  if( ppPage ){
    *ppPage = pPage;
  }else{
    releasePage(pPage);
  }
  return (rc==101 ? 0 : rc);
}
# 4680 "src/btree.c"
static int copyPayload(
  void *pPayload,
  void *pBuf,
  int nByte,
  int eOp,
  DbPage *pDbPage
){
  if( eOp ){

    int rc = sqlite3PagerWrite(pDbPage);
    if( rc!=0 ){
      return rc;
    }
    memcpy(pPayload, pBuf, nByte);
  }else{

    memcpy(pBuf, pPayload, nByte);
  }
  return 0;
}
# 4730 "src/btree.c"
static int accessPayload(
  BtCursor *pCur,
  u32 offset,
  u32 amt,
  unsigned char *pBuf,
  int eOp
){
  unsigned char *aPayload;
  int rc = 0;
  int iIdx = 0;
  MemPage *pPage = pCur->pPage;
  BtShared *pBt = pCur->pBt;


  assert( pPage );
  assert( eOp==0 || eOp==1 );
  assert( pCur->eState==0 );
  assert( pCur->ix<pPage->nCell );
  assert( cursorHoldsMutex(pCur) );

  getCellInfo(pCur);
  aPayload = pCur->info.pPayload;
  assert( offset+amt <= pCur->info.nPayload );

  assert( aPayload > pPage->aData );
  if( (uptr)(aPayload - pPage->aData) > (pBt->usableSize - pCur->info.nLocal) ){


    return sqlite3CorruptError(4763);
  }


  if( offset<pCur->info.nLocal ){
    int a = amt;
    if( a+offset>pCur->info.nLocal ){
      a = pCur->info.nLocal - offset;
    }
    rc = copyPayload(&aPayload[offset], pBuf, a, eOp, pPage->pDbPage);
    offset = 0;
    pBuf += a;
    amt -= a;
  }else{
    offset -= pCur->info.nLocal;
  }


  if( rc==0 && amt>0 ){
    const u32 ovflSize = pBt->usableSize - 4;
    Pgno nextPage;

    nextPage = sqlite3Get4byte(&aPayload[pCur->info.nLocal]);
# 4794 "src/btree.c"
    if( (pCur->curFlags & 0x04)==0 ){
      int nOvfl = (pCur->info.nPayload-pCur->info.nLocal+ovflSize-1)/ovflSize;
      if( pCur->aOverflow==0
       || nOvfl*(int)sizeof(Pgno) > sqlite3MallocSize(pCur->aOverflow)
      ){
        Pgno *aNew = (Pgno*)sqlite3Realloc(
            pCur->aOverflow, nOvfl*2*sizeof(Pgno)
        );
        if( aNew==0 ){
          return 7;
        }else{
          pCur->aOverflow = aNew;
        }
      }
      memset(pCur->aOverflow, 0, nOvfl*sizeof(Pgno));
      pCur->curFlags |= 0x04;
    }else{


      if( pCur->aOverflow[offset/ovflSize] ){
        iIdx = (offset/ovflSize);
        nextPage = pCur->aOverflow[iIdx];
        offset = (offset%ovflSize);
      }
    }

    assert( rc==0 && amt>0 );
    while( nextPage ){

      assert( pCur->aOverflow[iIdx]==0
              || pCur->aOverflow[iIdx]==nextPage
              || (sqlite3Config.neverCorrupt==0) );
      pCur->aOverflow[iIdx] = nextPage;

      if( offset>=ovflSize ){


        assert( pCur->curFlags & 0x04 );
        assert( pCur->pBtree->db==pBt->db );
        if( pCur->aOverflow[iIdx+1] ){
          nextPage = pCur->aOverflow[iIdx+1];
        }else{
          rc = getOverflowPage(pBt, nextPage, 0, &nextPage);
        }
        offset -= ovflSize;
      }else{


        int a = amt;
        if( a + offset > ovflSize ){
          a = ovflSize - offset;
        }
# 4884 "src/btree.c"
        {
          DbPage *pDbPage;
          rc = sqlite3PagerGet(pBt->pPager, nextPage, &pDbPage,
              (eOp==0 ? 0x02 : 0)
          );
          if( rc==0 ){
            aPayload = sqlite3PagerGetData(pDbPage);
            nextPage = sqlite3Get4byte(aPayload);
            rc = copyPayload(&aPayload[offset+4], pBuf, a, eOp, pDbPage);
            sqlite3PagerUnref(pDbPage);
            offset = 0;
          }
        }
        amt -= a;
        if( amt==0 ) return rc;
        pBuf += a;
      }
      if( rc ) break;
      iIdx++;
    }
  }

  if( rc==0 && amt>0 ){

    return sqlite3CorruptError(4908);
  }
  return rc;
}
# 4930 "src/btree.c"
int sqlite3BtreePayload(BtCursor *pCur, u32 offset, u32 amt, void *pBuf){
  assert( cursorHoldsMutex(pCur) );
  assert( pCur->eState==0 );
  assert( pCur->iPage>=0 && pCur->pPage );
  assert( pCur->ix<pCur->pPage->nCell );
  return accessPayload(pCur, offset, amt, (unsigned char*)pBuf, 0);
}


static int accessPayloadChecked(
  BtCursor *pCur,
  u32 offset,
  u32 amt,
  void *pBuf
){
  int rc;
  if ( pCur->eState==1 ){
    return 4;
  }
  assert( cursorOwnsBtShared(pCur) );
  rc = btreeRestoreCursorPosition(pCur);
  return rc ? rc : accessPayload(pCur, offset, amt, pBuf, 0);
}
int sqlite3BtreePayloadChecked(BtCursor *pCur, u32 offset, u32 amt, void *pBuf){
  if( pCur->eState==0 ){
    assert( cursorOwnsBtShared(pCur) );
    return accessPayload(pCur, offset, amt, pBuf, 0);
  }else{
    return accessPayloadChecked(pCur, offset, amt, pBuf);
  }
}
# 4987 "src/btree.c"
static const void *fetchPayload(
  BtCursor *pCur,
  u32 *pAmt
){
  int amt;
  assert( pCur!=0 && pCur->iPage>=0 && pCur->pPage);
  assert( pCur->eState==0 );
  assert( sqlite3_mutex_held(pCur->pBtree->db->mutex) );
  assert( cursorOwnsBtShared(pCur) );
  assert( pCur->ix<pCur->pPage->nCell );
  assert( pCur->info.nSize>0 );
  assert( pCur->info.pPayload>pCur->pPage->aData || (sqlite3Config.neverCorrupt==0) );
  assert( pCur->info.pPayload<pCur->pPage->aDataEnd ||(sqlite3Config.neverCorrupt==0));
  amt = pCur->info.nLocal;
  if( amt>(int)(pCur->pPage->aDataEnd - pCur->info.pPayload) ){


    assert( (sqlite3Config.neverCorrupt==0) );
    amt = ((0)>((int)(pCur->pPage->aDataEnd - pCur->info.pPayload))?(0):((int)(pCur->pPage->aDataEnd - pCur->info.pPayload)));
  }
  *pAmt = (u32)amt;
  return (void*)pCur->info.pPayload;
}
# 5026 "src/btree.c"
const void *sqlite3BtreePayloadFetch(BtCursor *pCur, u32 *pAmt){
  return fetchPayload(pCur, pAmt);
}
# 5040 "src/btree.c"
static int moveToChild(BtCursor *pCur, u32 newPgno){
  BtShared *pBt = pCur->pBt;

  assert( cursorOwnsBtShared(pCur) );
  assert( pCur->eState==0 );
  assert( pCur->iPage<20 );
  assert( pCur->iPage>=0 );
  if( pCur->iPage>=(20 -1) ){
    return sqlite3CorruptError(5048);
  }
  pCur->info.nSize = 0;
  pCur->curFlags &= ~(0x02|0x04);
  pCur->aiIdx[pCur->iPage] = pCur->ix;
  pCur->apPage[pCur->iPage] = pCur->pPage;
  pCur->ix = 0;
  pCur->iPage++;
  return getAndInitPage(pBt, newPgno, &pCur->pPage, pCur, pCur->curPagerFlags);
}
# 5089 "src/btree.c"
static void moveToParent(BtCursor *pCur){
  MemPage *pLeaf;
  assert( cursorOwnsBtShared(pCur) );
  assert( pCur->eState==0 );
  assert( pCur->iPage>0 );
  assert( pCur->pPage );
 

   ;
  ;
  pCur->info.nSize = 0;
  pCur->curFlags &= ~(0x02|0x04);
  pCur->ix = pCur->aiIdx[pCur->iPage-1];
  pLeaf = pCur->pPage;
  pCur->pPage = pCur->apPage[--pCur->iPage];
  releasePageNotNull(pLeaf);
}
# 5130 "src/btree.c"
static int moveToRoot(BtCursor *pCur){
  MemPage *pRoot;
  int rc = 0;

  assert( cursorOwnsBtShared(pCur) );
  assert( 1 < 3 );
  assert( 0 < 3 );
  assert( 4 > 3 );
  assert( pCur->eState < 3 || pCur->iPage<0 );
  assert( pCur->pgnoRoot>0 || pCur->iPage<0 );

  if( pCur->iPage>=0 ){
    if( pCur->iPage ){
      releasePageNotNull(pCur->pPage);
      while( --pCur->iPage ){
        releasePageNotNull(pCur->apPage[pCur->iPage]);
      }
      pCur->pPage = pCur->apPage[0];
      goto skip_init;
    }
  }else if( pCur->pgnoRoot==0 ){
    pCur->eState = 1;
    return 16;
  }else{
    assert( pCur->iPage==(-1) );
    if( pCur->eState>=3 ){
      if( pCur->eState==4 ){
        assert( pCur->skipNext!=0 );
        return pCur->skipNext;
      }
      sqlite3BtreeClearCursor(pCur);
    }
    rc = getAndInitPage(pCur->pBtree->pBt, pCur->pgnoRoot, &pCur->pPage,
                        0, pCur->curPagerFlags);
    if( rc!=0 ){
      pCur->eState = 1;
      return rc;
    }
    pCur->iPage = 0;
    pCur->curIntKey = pCur->pPage->intKey;
  }
  pRoot = pCur->pPage;
  assert( pRoot->pgno==pCur->pgnoRoot );
# 5184 "src/btree.c"
  assert( pRoot->intKey==1 || pRoot->intKey==0 );
  if( pRoot->isInit==0 || (pCur->pKeyInfo==0)!=pRoot->intKey ){
    return sqlite3CorruptError(5186);
  }

skip_init:
  pCur->ix = 0;
  pCur->info.nSize = 0;
  pCur->curFlags &= ~(0x08|0x02|0x04);

  pRoot = pCur->pPage;
  if( pRoot->nCell>0 ){
    pCur->eState = 0;
  }else if( !pRoot->leaf ){
    Pgno subpage;
    if( pRoot->pgno!=1 ) return sqlite3CorruptError(5199);
    subpage = sqlite3Get4byte(&pRoot->aData[pRoot->hdrOffset+8]);
    pCur->eState = 0;
    rc = moveToChild(pCur, subpage);
  }else{
    pCur->eState = 1;
    rc = 16;
  }
  return rc;
}
# 5217 "src/btree.c"
static int moveToLeftmost(BtCursor *pCur){
  Pgno pgno;
  int rc = 0;
  MemPage *pPage;

  assert( cursorOwnsBtShared(pCur) );
  assert( pCur->eState==0 );
  while( rc==0 && !(pPage = pCur->pPage)->leaf ){
    assert( pCur->ix<pPage->nCell );
    pgno = sqlite3Get4byte(((pPage)->aData + ((pPage)->maskPage & __builtin_bswap16(*(u16*)(&(pPage)->aCellIdx[2*(pCur->ix)])))));
    rc = moveToChild(pCur, pgno);
  }
  return rc;
}
# 5242 "src/btree.c"
static int moveToRightmost(BtCursor *pCur){
  Pgno pgno;
  int rc = 0;
  MemPage *pPage = 0;

  assert( cursorOwnsBtShared(pCur) );
  assert( pCur->eState==0 );
  while( !(pPage = pCur->pPage)->leaf ){
    pgno = sqlite3Get4byte(&pPage->aData[pPage->hdrOffset+8]);
    pCur->ix = pPage->nCell;
    rc = moveToChild(pCur, pgno);
    if( rc ) return rc;
  }
  pCur->ix = pPage->nCell-1;
  assert( pCur->info.nSize==0 );
  assert( (pCur->curFlags & 0x02)==0 );
  return 0;
}


int sqlite3BtreeFirst(BtCursor *pCur, int *pRes){
  int rc;

  assert( cursorOwnsBtShared(pCur) );
  assert( sqlite3_mutex_held(pCur->pBtree->db->mutex) );
  rc = moveToRoot(pCur);
  if( rc==0 ){
    assert( pCur->pPage->nCell>0 );
    *pRes = 0;
    rc = moveToLeftmost(pCur);
  }else if( rc==16 ){
    assert( pCur->pgnoRoot==0 || pCur->pPage->nCell==0 );
    *pRes = 1;
    rc = 0;
  }
  return rc;
}


int sqlite3BtreeLast(BtCursor *pCur, int *pRes){
  int rc;

  assert( cursorOwnsBtShared(pCur) );
  assert( sqlite3_mutex_held(pCur->pBtree->db->mutex) );


  if( 0==pCur->eState && (pCur->curFlags & 0x08)!=0 ){
# 5305 "src/btree.c"
    *pRes = 0;
    return 0;
  }

  rc = moveToRoot(pCur);
  if( rc==0 ){
    assert( pCur->eState==0 );
    *pRes = 0;
    rc = moveToRightmost(pCur);
    if( rc==0 ){
      pCur->curFlags |= 0x08;
    }else{
      pCur->curFlags &= ~0x08;
    }
  }else if( rc==16 ){
    assert( pCur->pgnoRoot==0 || pCur->pPage->nCell==0 );
    *pRes = 1;
    rc = 0;
  }
  return rc;
}
# 5357 "src/btree.c"
int sqlite3BtreeMovetoUnpacked(
  BtCursor *pCur,
  UnpackedRecord *pIdxKey,
  i64 intKey,
  int biasRight,
  int *pRes
){
  int rc;
  RecordCompare xRecordCompare;

  assert( cursorOwnsBtShared(pCur) );
  assert( sqlite3_mutex_held(pCur->pBtree->db->mutex) );
  assert( pRes );
  assert( (pIdxKey==0)==(pCur->pKeyInfo==0) );
  assert( pCur->eState!=0 || (pIdxKey==0)==(pCur->curIntKey!=0) );


  if( pIdxKey==0
   && pCur->eState==0 && (pCur->curFlags & 0x02)!=0
  ){
    if( pCur->info.nKey==intKey ){
      *pRes = 0;
      return 0;
    }
    if( pCur->info.nKey<intKey ){
      if( (pCur->curFlags & 0x08)!=0 ){
        *pRes = -1;
        return 0;
      }


      if( pCur->info.nKey+1==intKey ){
        *pRes = 0;
        rc = sqlite3BtreeNext(pCur, 0);
        if( rc==0 ){
          getCellInfo(pCur);
          if( pCur->info.nKey==intKey ){
            return 0;
          }
        }else if( rc==101 ){
          rc = 0;
        }else{
          return rc;
        }
      }
    }
  }

  if( pIdxKey ){
    xRecordCompare = sqlite3VdbeFindCompare(pIdxKey);
    pIdxKey->errCode = 0;
    assert( pIdxKey->default_rc==1
         || pIdxKey->default_rc==0
         || pIdxKey->default_rc==-1
    );
  }else{
    xRecordCompare = 0;
  }

  rc = moveToRoot(pCur);
  if( rc ){
    if( rc==16 ){
      assert( pCur->pgnoRoot==0 || pCur->pPage->nCell==0 );
      *pRes = -1;
      return 0;
    }
    return rc;
  }
  assert( pCur->pPage );
  assert( pCur->pPage->isInit );
  assert( pCur->eState==0 );
  assert( pCur->pPage->nCell > 0 );
  assert( pCur->iPage==0 || pCur->apPage[0]->intKey==pCur->curIntKey );
  assert( pCur->curIntKey || pIdxKey );
  for(;;){
    int lwr, upr, idx, c;
    Pgno chldPg;
    MemPage *pPage = pCur->pPage;
    u8 *pCell;


    assert( pPage->nCell>0 );
    assert( pPage->intKey==(pIdxKey==0) );
    lwr = 0;
    upr = pPage->nCell-1;
    assert( biasRight==0 || biasRight==1 );
    idx = upr>>(1-biasRight);
    pCur->ix = (u16)idx;
    if( xRecordCompare==0 ){
      for(;;){
        i64 nCellKey;
        pCell = ((pPage)->aDataOfst + ((pPage)->maskPage & __builtin_bswap16(*(u16*)(&(pPage)->aCellIdx[2*(idx)]))));
        if( pPage->intKeyLeaf ){
          while( 0x80 <= *(pCell++) ){
            if( pCell>=pPage->aDataEnd ){
              return sqlite3CorruptError(5460);
            }
          }
        }
        sqlite3GetVarint(pCell, (u64*)&nCellKey);
        if( nCellKey<intKey ){
          lwr = idx+1;
          if( lwr>upr ){ c = -1; break; }
        }else if( nCellKey>intKey ){
          upr = idx-1;
          if( lwr>upr ){ c = +1; break; }
        }else{
          assert( nCellKey==intKey );
          pCur->ix = (u16)idx;
          if( !pPage->leaf ){
            lwr = idx;
            goto moveto_next_layer;
          }else{
            pCur->curFlags |= 0x02;
            pCur->info.nKey = nCellKey;
            pCur->info.nSize = 0;
            *pRes = 0;
            return 0;
          }
        }
        assert( lwr+upr>=0 );
        idx = (lwr+upr)>>1;
      }
    }else{
      for(;;){
        int nCell;
        pCell = ((pPage)->aDataOfst + ((pPage)->maskPage & __builtin_bswap16(*(u16*)(&(pPage)->aCellIdx[2*(idx)]))));
# 5501 "src/btree.c"
        nCell = pCell[0];
        if( nCell<=pPage->max1bytePayload ){


          ;
          c = xRecordCompare(nCell, (void*)&pCell[1], pIdxKey);
        }else if( !(pCell[1] & 0x80)
          && (nCell = ((nCell&0x7f)<<7) + pCell[1])<=pPage->maxLocal
        ){


          ;
          c = xRecordCompare(nCell, (void*)&pCell[2], pIdxKey);
        }else{
# 5525 "src/btree.c"
          void *pCellKey;
          u8 * const pCellBody = pCell - pPage->childPtrSize;
          const int nOverrun = 18;
          pPage->xParseCell(pPage, pCellBody, &pCur->info);
          nCell = (int)pCur->info.nKey;
          ;
          ;
          ;
          ;
          if( nCell<2 || nCell/pCur->pBt->usableSize>pCur->pBt->nPage ){
            rc = sqlite3CorruptError(5535);
            goto moveto_finish;
          }
          pCellKey = sqlite3Malloc( nCell+nOverrun );
          if( pCellKey==0 ){
            rc = 7;
            goto moveto_finish;
          }
          pCur->ix = (u16)idx;
          rc = accessPayload(pCur, 0, nCell, (unsigned char*)pCellKey, 0);
          memset(((u8*)pCellKey)+nCell,0,nOverrun);
          pCur->curFlags &= ~0x04;
          if( rc ){
            sqlite3_free(pCellKey);
            goto moveto_finish;
          }
          c = sqlite3VdbeRecordCompare(nCell, pCellKey, pIdxKey);
          sqlite3_free(pCellKey);
        }
        assert(
            (pIdxKey->errCode!=11 || c==0)
         && (pIdxKey->errCode!=7 || pCur->pBtree->db->mallocFailed)
        );
        if( c<0 ){
          lwr = idx+1;
        }else if( c>0 ){
          upr = idx-1;
        }else{
          assert( c==0 );
          *pRes = 0;
          rc = 0;
          pCur->ix = (u16)idx;
          if( pIdxKey->errCode ) rc = sqlite3CorruptError(5567);
          goto moveto_finish;
        }
        if( lwr>upr ) break;
        assert( lwr+upr>=0 );
        idx = (lwr+upr)>>1;
      }
    }
    assert( lwr==upr+1 || (pPage->intKey && !pPage->leaf) );
    assert( pPage->isInit );
    if( pPage->leaf ){
      assert( pCur->ix<pCur->pPage->nCell );
      pCur->ix = (u16)idx;
      *pRes = c;
      rc = 0;
      goto moveto_finish;
    }
moveto_next_layer:
    if( lwr>=pPage->nCell ){
      chldPg = sqlite3Get4byte(&pPage->aData[pPage->hdrOffset+8]);
    }else{
      chldPg = sqlite3Get4byte(((pPage)->aData + ((pPage)->maskPage & __builtin_bswap16(*(u16*)(&(pPage)->aCellIdx[2*(lwr)])))));
    }
    pCur->ix = (u16)lwr;
    rc = moveToChild(pCur, chldPg);
    if( rc ) break;
  }
moveto_finish:
  pCur->info.nSize = 0;
  assert( (pCur->curFlags & 0x04)==0 );
  return rc;
}
# 5608 "src/btree.c"
int sqlite3BtreeEof(BtCursor *pCur){


  return (0!=pCur->eState);
}


i64 sqlite3BtreeRowCountEst(BtCursor *pCur){
  i64 n;
  u8 i;

  assert( cursorOwnsBtShared(pCur) );
  assert( sqlite3_mutex_held(pCur->pBtree->db->mutex) );


  if( (pCur->eState!=0) ) return -1;
  if( (pCur->pPage->leaf==0) ) return -1;

  n = pCur->pPage->nCell;
  for(i=0; i<pCur->iPage; i++){
    n *= pCur->apPage[i]->nCell;
  }
  return n;
}
# 5661 "src/btree.c"
static int btreeNext(BtCursor *pCur){
  int rc;
  int idx;
  MemPage *pPage;

  assert( cursorOwnsBtShared(pCur) );
  if( pCur->eState!=0 ){
    assert( (pCur->curFlags & 0x04)==0 );
    rc = (pCur->eState>=3 ? btreeRestoreCursorPosition(pCur) : 0);
    if( rc!=0 ){
      return rc;
    }
    if( 1==pCur->eState ){
      return 101;
    }
    if( pCur->eState==2 ){
      pCur->eState = 0;
      if( pCur->skipNext>0 ) return 0;
    }
  }

  pPage = pCur->pPage;
  idx = ++pCur->ix;
  if( !pPage->isInit ){


    return sqlite3CorruptError(5692);
  }


  ;

  if( idx>=pPage->nCell ){
    if( !pPage->leaf ){
      rc = moveToChild(pCur, sqlite3Get4byte(&pPage->aData[pPage->hdrOffset+8]));
      if( rc ) return rc;
      return moveToLeftmost(pCur);
    }
    do{
      if( pCur->iPage==0 ){
        pCur->eState = 1;
        return 101;
      }
      moveToParent(pCur);
      pPage = pCur->pPage;
    }while( pCur->ix>=pPage->nCell );
    if( pPage->intKey ){
      return sqlite3BtreeNext(pCur, 0);
    }else{
      return 0;
    }
  }
  if( pPage->leaf ){
    return 0;
  }else{
    return moveToLeftmost(pCur);
  }
}
int sqlite3BtreeNext(BtCursor *pCur, int flags){
  MemPage *pPage;
  (void)(flags);
  assert( cursorOwnsBtShared(pCur) );
  assert( flags==0 || flags==1 );
  pCur->info.nSize = 0;
  pCur->curFlags &= ~(0x02|0x04);
  if( pCur->eState!=0 ) return btreeNext(pCur);
  pPage = pCur->pPage;
  if( (++pCur->ix)>=pPage->nCell ){
    pCur->ix--;
    return btreeNext(pCur);
  }
  if( pPage->leaf ){
    return 0;
  }else{
    return moveToLeftmost(pCur);
  }
}
# 5768 "src/btree.c"
static int btreePrevious(BtCursor *pCur){
  int rc;
  MemPage *pPage;

  assert( cursorOwnsBtShared(pCur) );
  assert( (pCur->curFlags & (0x08|0x04|0x02))==0 );
  assert( pCur->info.nSize==0 );
  if( pCur->eState!=0 ){
    rc = (pCur->eState>=3 ? btreeRestoreCursorPosition(pCur) : 0);
    if( rc!=0 ){
      return rc;
    }
    if( 1==pCur->eState ){
      return 101;
    }
    if( 2==pCur->eState ){
      pCur->eState = 0;
      if( pCur->skipNext<0 ) return 0;
    }
  }

  pPage = pCur->pPage;
  assert( pPage->isInit );
  if( !pPage->leaf ){
    int idx = pCur->ix;
    rc = moveToChild(pCur, sqlite3Get4byte(((pPage)->aData + ((pPage)->maskPage & __builtin_bswap16(*(u16*)(&(pPage)->aCellIdx[2*(idx)]))))));
    if( rc ) return rc;
    rc = moveToRightmost(pCur);
  }else{
    while( pCur->ix==0 ){
      if( pCur->iPage==0 ){
        pCur->eState = 1;
        return 101;
      }
      moveToParent(pCur);
    }
    assert( pCur->info.nSize==0 );
    assert( (pCur->curFlags & (0x04))==0 );

    pCur->ix--;
    pPage = pCur->pPage;
    if( pPage->intKey && !pPage->leaf ){
      rc = sqlite3BtreePrevious(pCur, 0);
    }else{
      rc = 0;
    }
  }
  return rc;
}
int sqlite3BtreePrevious(BtCursor *pCur, int flags){
  assert( cursorOwnsBtShared(pCur) );
  assert( flags==0 || flags==1 );
  (void)(flags);
  pCur->curFlags &= ~(0x08|0x04|0x02);
  pCur->info.nSize = 0;
  if( pCur->eState!=0
   || pCur->ix==0
   || pCur->pPage->leaf==0
  ){
    return btreePrevious(pCur);
  }
  pCur->ix--;
  return 0;
}
# 5855 "src/btree.c"
static int allocateBtreePage(
  BtShared *pBt,
  MemPage **ppPage,
  Pgno *pPgno,
  Pgno nearby,
  u8 eMode
){
  MemPage *pPage1;
  int rc;
  u32 n;
  u32 k;
  MemPage *pTrunk = 0;
  MemPage *pPrevTrunk = 0;
  Pgno mxPage;

  assert( sqlite3_mutex_held(pBt->mutex) );
  assert( eMode==0 || (nearby>0 && (pBt->autoVacuum)) );
  pPage1 = pBt->pPage1;
  mxPage = btreePagecount(pBt);


  n = sqlite3Get4byte(&pPage1->aData[36]);
  ;
  if( n>=mxPage ){
    return sqlite3CorruptError(5879);
  }
  if( n>0 ){

    Pgno iTrunk;
    u8 searchList = 0;
    u32 nSearch = 0;


    if( eMode==1 ){
      if( nearby<=mxPage ){
        u8 eType;
        assert( nearby>0 );
        assert( pBt->autoVacuum );
        rc = ptrmapGet(pBt, nearby, &eType, 0);
        if( rc ) return rc;
        if( eType==2 ){
          searchList = 1;
        }
      }
    }else if( eMode==2 ){
      searchList = 1;
    }


    rc = sqlite3PagerWrite(pPage1->pDbPage);
    if( rc ) return rc;
    sqlite3Put4byte(&pPage1->aData[36], n-1);


    do {
      pPrevTrunk = pTrunk;
      if( pPrevTrunk ){


        iTrunk = sqlite3Get4byte(&pPrevTrunk->aData[0]);
      }else{


        iTrunk = sqlite3Get4byte(&pPage1->aData[32]);
      }
      ;
      if( iTrunk>mxPage || nSearch++ > n ){
        rc = sqlite3CorruptError(5935);
      }else{
        rc = btreeGetUnusedPage(pBt, iTrunk, &pTrunk, 0);
      }
      if( rc ){
        pTrunk = 0;
        goto end_allocate_page;
      }
      assert( pTrunk!=0 );
      assert( pTrunk->aData!=0 );


      k = sqlite3Get4byte(&pTrunk->aData[4]);
      if( k==0 && !searchList ){


        assert( pPrevTrunk==0 );
        rc = sqlite3PagerWrite(pTrunk->pDbPage);
        if( rc ){
          goto end_allocate_page;
        }
        *pPgno = iTrunk;
        memcpy(&pPage1->aData[32], &pTrunk->aData[0], 4);
        *ppPage = pTrunk;
        pTrunk = 0;
        ;
      }else if( k>(u32)(pBt->usableSize/4 - 2) ){

        rc = sqlite3CorruptError(5964);
        goto end_allocate_page;

      }else if( searchList
            && (nearby==iTrunk || (iTrunk<nearby && eMode==2))
      ){


        *pPgno = iTrunk;
        *ppPage = pTrunk;
        searchList = 0;
        rc = sqlite3PagerWrite(pTrunk->pDbPage);
        if( rc ){
          goto end_allocate_page;
        }
        if( k==0 ){
          if( !pPrevTrunk ){
            memcpy(&pPage1->aData[32], &pTrunk->aData[0], 4);
          }else{
            rc = sqlite3PagerWrite(pPrevTrunk->pDbPage);
            if( rc!=0 ){
              goto end_allocate_page;
            }
            memcpy(&pPrevTrunk->aData[0], &pTrunk->aData[0], 4);
          }
        }else{


          MemPage *pNewTrunk;
          Pgno iNewTrunk = sqlite3Get4byte(&pTrunk->aData[8]);
          if( iNewTrunk>mxPage ){
            rc = sqlite3CorruptError(5998);
            goto end_allocate_page;
          }
          ;
          rc = btreeGetUnusedPage(pBt, iNewTrunk, &pNewTrunk, 0);
          if( rc!=0 ){
            goto end_allocate_page;
          }
          rc = sqlite3PagerWrite(pNewTrunk->pDbPage);
          if( rc!=0 ){
            releasePage(pNewTrunk);
            goto end_allocate_page;
          }
          memcpy(&pNewTrunk->aData[0], &pTrunk->aData[0], 4);
          sqlite3Put4byte(&pNewTrunk->aData[4], k-1);
          memcpy(&pNewTrunk->aData[8], &pTrunk->aData[12], (k-1)*4);
          releasePage(pNewTrunk);
          if( !pPrevTrunk ){
            assert( sqlite3PagerIswriteable(pPage1->pDbPage) );
            sqlite3Put4byte(&pPage1->aData[32], iNewTrunk);
          }else{
            rc = sqlite3PagerWrite(pPrevTrunk->pDbPage);
            if( rc ){
              goto end_allocate_page;
            }
            sqlite3Put4byte(&pPrevTrunk->aData[0], iNewTrunk);
          }
        }
        pTrunk = 0;
        ;

      }else if( k>0 ){

        u32 closest;
        Pgno iPage;
        unsigned char *aData = pTrunk->aData;
        if( nearby>0 ){
          u32 i;
          closest = 0;
          if( eMode==2 ){
            for(i=0; i<k; i++){
              iPage = sqlite3Get4byte(&aData[8+i*4]);
              if( iPage<=nearby ){
                closest = i;
                break;
              }
            }
          }else{
            int dist;
            dist = sqlite3AbsInt32(sqlite3Get4byte(&aData[8]) - nearby);
            for(i=1; i<k; i++){
              int d2 = sqlite3AbsInt32(sqlite3Get4byte(&aData[8+i*4]) - nearby);
              if( d2<dist ){
                closest = i;
                dist = d2;
              }
            }
          }
        }else{
          closest = 0;
        }

        iPage = sqlite3Get4byte(&aData[8+closest*4]);
        ;
        if( iPage>mxPage ){
          rc = sqlite3CorruptError(6063);
          goto end_allocate_page;
        }
        ;
        if( !searchList
         || (iPage==nearby || (iPage<nearby && eMode==2))
        ){
          int noContent;
          *pPgno = iPage;
         

                                                          ;
          rc = sqlite3PagerWrite(pTrunk->pDbPage);
          if( rc ) goto end_allocate_page;
          if( closest<k-1 ){
            memcpy(&aData[8+closest*4], &aData[4+k*4], 4);
          }
          sqlite3Put4byte(&aData[4], k-1);
          noContent = !btreeGetHasContent(pBt, *pPgno)? 0x01 : 0;
          rc = btreeGetUnusedPage(pBt, *pPgno, ppPage, noContent);
          if( rc==0 ){
            rc = sqlite3PagerWrite((*ppPage)->pDbPage);
            if( rc!=0 ){
              releasePage(*ppPage);
              *ppPage = 0;
            }
          }
          searchList = 0;
        }
      }
      releasePage(pPrevTrunk);
      pPrevTrunk = 0;
    }while( searchList );
  }else{
# 6115 "src/btree.c"
    int bNoContent = (0==(pBt->bDoTruncate))? 0x01:0;

    rc = sqlite3PagerWrite(pBt->pPage1->pDbPage);
    if( rc ) return rc;
    pBt->nPage++;
    if( pBt->nPage==((Pgno)((sqlite3PendingByte/((pBt)->pageSize))+1)) ) pBt->nPage++;


    if( pBt->autoVacuum && (ptrmapPageno((pBt), (pBt->nPage))==(pBt->nPage)) ){


      MemPage *pPg = 0;
      ;
      assert( pBt->nPage!=((Pgno)((sqlite3PendingByte/((pBt)->pageSize))+1)) );
      rc = btreeGetUnusedPage(pBt, pBt->nPage, &pPg, bNoContent);
      if( rc==0 ){
        rc = sqlite3PagerWrite(pPg->pDbPage);
        releasePage(pPg);
      }
      if( rc ) return rc;
      pBt->nPage++;
      if( pBt->nPage==((Pgno)((sqlite3PendingByte/((pBt)->pageSize))+1)) ){ pBt->nPage++; }
    }

    sqlite3Put4byte(28 + (u8*)pBt->pPage1->aData, pBt->nPage);
    *pPgno = pBt->nPage;

    assert( *pPgno!=((Pgno)((sqlite3PendingByte/((pBt)->pageSize))+1)) );
    rc = btreeGetUnusedPage(pBt, *pPgno, ppPage, bNoContent);
    if( rc ) return rc;
    rc = sqlite3PagerWrite((*ppPage)->pDbPage);
    if( rc!=0 ){
      releasePage(*ppPage);
      *ppPage = 0;
    }
    ;
  }

  assert( (sqlite3Config.neverCorrupt==0) || *pPgno!=((Pgno)((sqlite3PendingByte/((pBt)->pageSize))+1)) );

end_allocate_page:
  releasePage(pTrunk);
  releasePage(pPrevTrunk);
  assert( rc!=0 || sqlite3PagerPageRefcount((*ppPage)->pDbPage)<=1 );
  assert( rc!=0 || (*ppPage)->isInit==0 );
  return rc;
}
# 6177 "src/btree.c"
static int freePage2(BtShared *pBt, MemPage *pMemPage, Pgno iPage){
  MemPage *pTrunk = 0;
  Pgno iTrunk = 0;
  MemPage *pPage1 = pBt->pPage1;
  MemPage *pPage;
  int rc;
  u32 nFree;

  assert( sqlite3_mutex_held(pBt->mutex) );
  assert( (sqlite3Config.neverCorrupt==0) || iPage>1 );
  assert( !pMemPage || pMemPage->pgno==iPage );

  if( iPage<2 || iPage>pBt->nPage ){
    return sqlite3CorruptError(6190);
  }
  if( pMemPage ){
    pPage = pMemPage;
    sqlite3PagerRef(pPage->pDbPage);
  }else{
    pPage = btreePageLookup(pBt, iPage);
  }


  rc = sqlite3PagerWrite(pPage1->pDbPage);
  if( rc ) goto freepage_out;
  nFree = sqlite3Get4byte(&pPage1->aData[36]);
  sqlite3Put4byte(&pPage1->aData[36], nFree+1);

  if( pBt->btsFlags & 0x0004 ){


    if( (!pPage && ((rc = btreeGetPage(pBt, iPage, &pPage, 0))!=0) )
     || ((rc = sqlite3PagerWrite(pPage->pDbPage))!=0)
    ){
      goto freepage_out;
    }
    memset(pPage->aData, 0, pPage->pBt->pageSize);
  }


  if( (pBt->autoVacuum) ){
    ptrmapPut(pBt, iPage, 2, 0, &rc);
    if( rc ) goto freepage_out;
  }
# 6232 "src/btree.c"
  if( nFree!=0 ){
    u32 nLeaf;

    iTrunk = sqlite3Get4byte(&pPage1->aData[32]);
    rc = btreeGetPage(pBt, iTrunk, &pTrunk, 0);
    if( rc!=0 ){
      goto freepage_out;
    }

    nLeaf = sqlite3Get4byte(&pTrunk->aData[4]);
    assert( pBt->usableSize>32 );
    if( nLeaf > (u32)pBt->usableSize/4 - 2 ){
      rc = sqlite3CorruptError(6244);
      goto freepage_out;
    }
    if( nLeaf < (u32)pBt->usableSize/4 - 8 ){
# 6267 "src/btree.c"
      rc = sqlite3PagerWrite(pTrunk->pDbPage);
      if( rc==0 ){
        sqlite3Put4byte(&pTrunk->aData[4], nLeaf+1);
        sqlite3Put4byte(&pTrunk->aData[8+nLeaf*4], iPage);
        if( pPage && (pBt->btsFlags & 0x0004)==0 ){
          sqlite3PagerDontWrite(pPage->pDbPage);
        }
        rc = btreeSetHasContent(pBt, iPage);
      }
      ;
      goto freepage_out;
    }
  }


  if( pPage==0 && 0!=(rc = btreeGetPage(pBt, iPage, &pPage, 0)) ){
    goto freepage_out;
  }
  rc = sqlite3PagerWrite(pPage->pDbPage);
  if( rc!=0 ){
    goto freepage_out;
  }
  sqlite3Put4byte(pPage->aData, iTrunk);
  sqlite3Put4byte(&pPage->aData[4], 0);
  sqlite3Put4byte(&pPage1->aData[32], iPage);
  ;

freepage_out:
  if( pPage ){
    pPage->isInit = 0;
  }
  releasePage(pPage);
  releasePage(pTrunk);
  return rc;
}
static void freePage(MemPage *pPage, int *pRC){
  if( (*pRC)==0 ){
    *pRC = freePage2(pPage->pBt, pPage, pPage->pgno);
  }
}


static int clearCell(
  MemPage *pPage,
  unsigned char *pCell,
  CellInfo *pInfo
){
  BtShared *pBt;
  Pgno ovflPgno;
  int rc;
  int nOvfl;
  u32 ovflPageSize;

  assert( sqlite3_mutex_held(pPage->pBt->mutex) );
  pPage->xParseCell(pPage, pCell, pInfo);
  if( pInfo->nLocal==pInfo->nPayload ){
    return 0;
  }
  ;
  ;
  if( pCell + pInfo->nSize > pPage->aDataEnd ){

    return sqlite3CorruptError(6337);
  }
  ovflPgno = sqlite3Get4byte(pCell + pInfo->nSize - 4);
  pBt = pPage->pBt;
  assert( pBt->usableSize > 4 );
  ovflPageSize = pBt->usableSize - 4;
  nOvfl = (pInfo->nPayload - pInfo->nLocal + ovflPageSize - 1)/ovflPageSize;
  assert( nOvfl>0 ||
    ((sqlite3Config.neverCorrupt==0) && (pInfo->nPayload + ovflPageSize)<ovflPageSize)
  );
  while( nOvfl-- ){
    Pgno iNext = 0;
    MemPage *pOvfl = 0;
    if( ovflPgno<2 || ovflPgno>btreePagecount(pBt) ){


      return sqlite3CorruptError(6354);
    }
    if( nOvfl ){
      rc = getOverflowPage(pBt, ovflPgno, &pOvfl, &iNext);
      if( rc ) return rc;
    }

    if( ( pOvfl || ((pOvfl = btreePageLookup(pBt, ovflPgno))!=0) )
     && sqlite3PagerPageRefcount(pOvfl->pDbPage)!=1
    ){
# 6374 "src/btree.c"
      rc = sqlite3CorruptError(6374);
    }else{
      rc = freePage2(pBt, pOvfl, ovflPgno);
    }

    if( pOvfl ){
      sqlite3PagerUnref(pOvfl->pDbPage);
    }
    if( rc ) return rc;
    ovflPgno = iNext;
  }
  return 0;
}
# 6400 "src/btree.c"
static int fillInCell(
  MemPage *pPage,
  unsigned char *pCell,
  const BtreePayload *pX,
  int *pnSize
){
  int nPayload;
  const u8 *pSrc;
  int nSrc, n, rc, mn;
  int spaceLeft;
  MemPage *pToRelease;
  unsigned char *pPrior;
  unsigned char *pPayload;
  BtShared *pBt;
  Pgno pgnoOvfl;
  int nHeader;

  assert( sqlite3_mutex_held(pPage->pBt->mutex) );


  assert( pCell<pPage->aData || pCell>=&pPage->aData[pPage->pBt->pageSize]
            || sqlite3PagerIswriteable(pPage->pDbPage) );


  nHeader = pPage->childPtrSize;
  if( pPage->intKey ){
    nPayload = pX->nData + pX->nZero;
    pSrc = pX->pData;
    nSrc = pX->nData;
    assert( pPage->intKeyLeaf );
    nHeader += (u8)(((u32)(nPayload)<(u32)0x80)?(*(&pCell[nHeader])=(unsigned char)(nPayload)),1: sqlite3PutVarint((&pCell[nHeader]),(nPayload)));
    nHeader += sqlite3PutVarint(&pCell[nHeader], *(u64*)&pX->nKey);
  }else{
    assert( pX->nKey<=0x7fffffff && pX->pKey!=0 );
    nSrc = nPayload = (int)pX->nKey;
    pSrc = pX->pKey;
    nHeader += (u8)(((u32)(nPayload)<(u32)0x80)?(*(&pCell[nHeader])=(unsigned char)(nPayload)),1: sqlite3PutVarint((&pCell[nHeader]),(nPayload)));
  }


  pPayload = &pCell[nHeader];
  if( nPayload<=pPage->maxLocal ){


    n = nHeader + nPayload;
    ;
    ;
    if( n<4 ) n = 4;
    *pnSize = n;
    assert( nSrc<=nPayload );
    ;
    memcpy(pPayload, pSrc, nSrc);
    memset(pPayload+nSrc, 0, nPayload-nSrc);
    return 0;
  }


  mn = pPage->minLocal;
  n = mn + (nPayload - mn) % (pPage->pBt->usableSize - 4);
  ;
  ;
  if( n > pPage->maxLocal ) n = mn;
  spaceLeft = n;
  *pnSize = n + nHeader + 4;
  pPrior = &pCell[nHeader+n];
  pToRelease = 0;
  pgnoOvfl = 0;
  pBt = pPage->pBt;
# 6496 "src/btree.c"
  while( 1 ){
    n = nPayload;
    if( n>spaceLeft ) n = spaceLeft;


    assert( pToRelease==0 || sqlite3PagerIswriteable(pToRelease->pDbPage) );


    assert( pPayload<pPage->aData || pPayload>=&pPage->aData[pBt->pageSize]
            || sqlite3PagerIswriteable(pPage->pDbPage) );

    if( nSrc>=n ){
      memcpy(pPayload, pSrc, n);
    }else if( nSrc>0 ){
      n = nSrc;
      memcpy(pPayload, pSrc, n);
    }else{
      memset(pPayload, 0, n);
    }
    nPayload -= n;
    if( nPayload<=0 ) break;
    pPayload += n;
    pSrc += n;
    nSrc -= n;
    spaceLeft -= n;
    if( spaceLeft==0 ){
      MemPage *pOvfl = 0;

      Pgno pgnoPtrmap = pgnoOvfl;
      if( pBt->autoVacuum ){
        do{
          pgnoOvfl++;
        } while(
          (ptrmapPageno((pBt), (pgnoOvfl))==(pgnoOvfl)) || pgnoOvfl==((Pgno)((sqlite3PendingByte/((pBt)->pageSize))+1))
        );
      }

      rc = allocateBtreePage(pBt, &pOvfl, &pgnoOvfl, pgnoOvfl, 0);
# 6547 "src/btree.c"
      if( pBt->autoVacuum && rc==0 ){
        u8 eType = (pgnoPtrmap?4:3);
        ptrmapPut(pBt, pgnoOvfl, eType, pgnoPtrmap, &rc);
        if( rc ){
          releasePage(pOvfl);
        }
      }

      if( rc ){
        releasePage(pToRelease);
        return rc;
      }


      assert( pToRelease==0 || sqlite3PagerIswriteable(pToRelease->pDbPage) );


      assert( pPrior<pPage->aData || pPrior>=&pPage->aData[pBt->pageSize]
            || sqlite3PagerIswriteable(pPage->pDbPage) );

      sqlite3Put4byte(pPrior, pgnoOvfl);
      releasePage(pToRelease);
      pToRelease = pOvfl;
      pPrior = pOvfl->aData;
      sqlite3Put4byte(pPrior, 0);
      pPayload = &pOvfl->aData[4];
      spaceLeft = pBt->usableSize - 4;
    }
  }
  releasePage(pToRelease);
  return 0;
}
# 6590 "src/btree.c"
static void dropCell(MemPage *pPage, int idx, int sz, int *pRC){
  u32 pc;
  u8 *data;
  u8 *ptr;
  int rc;
  int hdr;

  if( *pRC ) return;
  assert( idx>=0 && idx<pPage->nCell );
  assert( (sqlite3Config.neverCorrupt==0) || sz==cellSize(pPage, idx) );
  assert( sqlite3PagerIswriteable(pPage->pDbPage) );
  assert( sqlite3_mutex_held(pPage->pBt->mutex) );
  assert( pPage->nFree>=0 );
  data = pPage->aData;
  ptr = &pPage->aCellIdx[2*idx];
  pc = ((ptr)[0]<<8 | (ptr)[1]);
  hdr = pPage->hdrOffset;
  ;
  ;
  if( pc+sz > pPage->pBt->usableSize ){
    *pRC = sqlite3CorruptError(6610);
    return;
  }
  rc = freeSpace(pPage, pc, sz);
  if( rc ){
    *pRC = rc;
    return;
  }
  pPage->nCell--;
  if( pPage->nCell==0 ){
    memset(&data[hdr+1], 0, 4);
    data[hdr+7] = 0;
    ((&data[hdr+5])[0] = (u8)((pPage->pBt->usableSize)>>8), (&data[hdr+5])[1] = (u8)(pPage->pBt->usableSize));
    pPage->nFree = pPage->pBt->usableSize - pPage->hdrOffset
                       - pPage->childPtrSize - 8;
  }else{
    memmove(ptr, ptr+2, 2*(pPage->nCell - idx));
    ((&data[hdr+3])[0] = (u8)((pPage->nCell)>>8), (&data[hdr+3])[1] = (u8)(pPage->nCell));
    pPage->nFree += 2;
  }
}
# 6646 "src/btree.c"
static void insertCell(
  MemPage *pPage,
  int i,
  u8 *pCell,
  int sz,
  u8 *pTemp,
  Pgno iChild,
  int *pRC
){
  int idx = 0;
  int j;
  u8 *data;
  u8 *pIns;

  assert( *pRC==0 );
  assert( i>=0 && i<=pPage->nCell+pPage->nOverflow );
  assert( ((pPage->pBt->pageSize-8)/6)<=10921 );
  assert( pPage->nCell<=((pPage->pBt->pageSize-8)/6) || (sqlite3Config.neverCorrupt==0) );
  assert( pPage->nOverflow<=((int)(sizeof(pPage->apOvfl)/sizeof(pPage->apOvfl[0]))) );
  assert( ((int)(sizeof(pPage->apOvfl)/sizeof(pPage->apOvfl[0])))==((int)(sizeof(pPage->aiOvfl)/sizeof(pPage->aiOvfl[0]))) );
  assert( sqlite3_mutex_held(pPage->pBt->mutex) );


  assert( sz==pPage->xCellSize(pPage, pCell) || (sz==8 && iChild>0) );
  assert( pPage->nFree>=0 );
  if( pPage->nOverflow || sz+2>pPage->nFree ){
    if( pTemp ){
      memcpy(pTemp, pCell, sz);
      pCell = pTemp;
    }
    if( iChild ){
      sqlite3Put4byte(pCell, iChild);
    }
    j = pPage->nOverflow++;


    assert( j < ((int)(sizeof(pPage->apOvfl)/sizeof(pPage->apOvfl[0])))-1 );
    pPage->apOvfl[j] = pCell;
    pPage->aiOvfl[j] = (u16)i;


    assert( j==0 || pPage->aiOvfl[j-1]<(u16)i );
    assert( j==0 || i==pPage->aiOvfl[j-1]+1 );
  }else{
    int rc = sqlite3PagerWrite(pPage->pDbPage);
    if( rc!=0 ){
      *pRC = rc;
      return;
    }
    assert( sqlite3PagerIswriteable(pPage->pDbPage) );
    data = pPage->aData;
    assert( &data[pPage->cellOffset]==pPage->aCellIdx );
    rc = allocateSpace(pPage, sz, &idx);
    if( rc ){ *pRC = rc; return; }


    assert( idx >= 0 );
    assert( idx >= pPage->cellOffset+2*pPage->nCell+2 || (sqlite3Config.neverCorrupt==0) );
    assert( idx+sz <= (int)pPage->pBt->usableSize );
    pPage->nFree -= (u16)(2 + sz);
    if( iChild ){


      memcpy(&data[idx+4], pCell+4, sz-4);
      sqlite3Put4byte(&data[idx], iChild);
    }else{
      memcpy(&data[idx], pCell, sz);
    }
    pIns = pPage->aCellIdx + i*2;
    memmove(pIns+2, pIns, 2*(pPage->nCell - i));
    ((pIns)[0] = (u8)((idx)>>8), (pIns)[1] = (u8)(idx));
    pPage->nCell++;

    if( (++data[pPage->hdrOffset+4])==0 ) data[pPage->hdrOffset+3]++;
    assert( ((&data[pPage->hdrOffset+3])[0]<<8 | (&data[pPage->hdrOffset+3])[1])==pPage->nCell || (sqlite3Config.neverCorrupt==0) );

    if( pPage->pBt->autoVacuum ){


      ptrmapPutOvflPtr(pPage, pPage, pCell, pRC);
    }

  }
}
# 6826 "src/btree.c"
typedef struct CellArray CellArray;
struct CellArray {
  int nCell;
  MemPage *pRef;
  u8 **apCell;
  u16 *szCell;
  u8 *apEnd[3*2];
  int ixNx[3*2];
};


static void populateCellCache(CellArray *p, int idx, int N){
  assert( idx>=0 && idx+N<=p->nCell );
  while( N>0 ){
    assert( p->apCell[idx]!=0 );
    if( p->szCell[idx]==0 ){
      p->szCell[idx] = p->pRef->xCellSize(p->pRef, p->apCell[idx]);
    }else{
      assert( (sqlite3Config.neverCorrupt==0) ||
              p->szCell[idx]==p->pRef->xCellSize(p->pRef, p->apCell[idx]) );
    }
    idx++;
    N--;
  }
}


static u16 computeCellSize(CellArray *p, int N){
  assert( N>=0 && N<p->nCell );
  assert( p->szCell[N]==0 );
  p->szCell[N] = p->pRef->xCellSize(p->pRef, p->apCell[N]);
  return p->szCell[N];
}
static u16 cachedCellSize(CellArray *p, int N){
  assert( N>=0 && N<p->nCell );
  if( p->szCell[N] ) return p->szCell[N];
  return computeCellSize(p, N);
}
# 6883 "src/btree.c"
static int rebuildPage(
  CellArray *pCArray,
  int iFirst,
  int nCell,
  MemPage *pPg
){
  const int hdr = pPg->hdrOffset;
  u8 * const aData = pPg->aData;
  const int usableSize = pPg->pBt->usableSize;
  u8 * const pEnd = &aData[usableSize];
  int i = iFirst;
  u32 j;
  int iEnd = i+nCell;
  u8 *pCellptr = pPg->aCellIdx;
  u8 *pTmp = sqlite3PagerTempSpace(pPg->pBt->pPager);
  u8 *pData;
  int k;
  u8 *pSrcEnd;

  assert( i<iEnd );
  j = ((&aData[hdr+5])[0]<<8 | (&aData[hdr+5])[1]);
  if( (j>(u32)usableSize) ){ j = 0; }
  memcpy(&pTmp[j], &aData[j], usableSize - j);

  for(k=0; pCArray->ixNx[k]<=i && (k<3*2); k++){}
  pSrcEnd = pCArray->apEnd[k];

  pData = pEnd;
  while( 1 ){
    u8 *pCell = pCArray->apCell[i];
    u16 sz = pCArray->szCell[i];
    assert( sz>0 );
    if( (((uptr)(pCell)>=(uptr)(aData))&&((uptr)(pCell)<(uptr)(pEnd))) ){
      if( ((uptr)(pCell+sz))>(uptr)pEnd ) return sqlite3CorruptError(6916);
      pCell = &pTmp[pCell - aData];
    }else if( (uptr)(pCell+sz)>(uptr)pSrcEnd
           && (uptr)(pCell)<(uptr)pSrcEnd
    ){
      return sqlite3CorruptError(6921);
    }

    pData -= sz;
    ((pCellptr)[0] = (u8)(((pData - aData))>>8), (pCellptr)[1] = (u8)((pData - aData)));
    pCellptr += 2;
    if( pData < pCellptr ) return sqlite3CorruptError(6927);
    memcpy(pData, pCell, sz);
    assert( sz==pPg->xCellSize(pPg, pCell) || (sqlite3Config.neverCorrupt==0) );
    ;
    i++;
    if( i>=iEnd ) break;
    if( pCArray->ixNx[k]<=i ){
      k++;
      pSrcEnd = pCArray->apEnd[k];
    }
  }


  pPg->nCell = nCell;
  pPg->nOverflow = 0;

  ((&aData[hdr+1])[0] = (u8)((0)>>8), (&aData[hdr+1])[1] = (u8)(0));
  ((&aData[hdr+3])[0] = (u8)((pPg->nCell)>>8), (&aData[hdr+3])[1] = (u8)(pPg->nCell));
  ((&aData[hdr+5])[0] = (u8)((pData - aData)>>8), (&aData[hdr+5])[1] = (u8)(pData - aData));
  aData[hdr+7] = 0x00;
  return 0;
}
# 6974 "src/btree.c"
static int pageInsertArray(
  MemPage *pPg,
  u8 *pBegin,
  u8 **ppData,
  u8 *pCellptr,
  int iFirst,
  int nCell,
  CellArray *pCArray
){
  int i = iFirst;
  u8 *aData = pPg->aData;
  u8 *pData = *ppData;
  int iEnd = iFirst + nCell;
  int k;
  u8 *pEnd;
  assert( (sqlite3Config.neverCorrupt==0) || pPg->hdrOffset==0 );
  if( iEnd<=iFirst ) return 0;
  for(k=0; pCArray->ixNx[k]<=i && (k<3*2); k++){}
  pEnd = pCArray->apEnd[k];
  while( 1 ){
    int sz, rc;
    u8 *pSlot;
    sz = cachedCellSize(pCArray, i);
    if( (aData[1]==0 && aData[2]==0) || (pSlot = pageFindSlot(pPg,sz,&rc))==0 ){
      if( (pData - pBegin)<sz ) return 1;
      pData -= sz;
      pSlot = pData;
    }


    assert( (pSlot+sz)<=pCArray->apCell[i]
         || pSlot>=(pCArray->apCell[i]+sz)
         || (sqlite3Config.neverCorrupt==0) );
    if( (uptr)(pCArray->apCell[i]+sz)>(uptr)pEnd
     && (uptr)(pCArray->apCell[i])<(uptr)pEnd
    ){
      assert( (sqlite3Config.neverCorrupt==0) );
      (void)sqlite3CorruptError(7012);
      return 1;
    }
    memmove(pSlot, pCArray->apCell[i], sz);
    ((pCellptr)[0] = (u8)(((pSlot - aData))>>8), (pCellptr)[1] = (u8)((pSlot - aData)));
    pCellptr += 2;
    i++;
    if( i>=iEnd ) break;
    if( pCArray->ixNx[k]<=i ){
      k++;
      pEnd = pCArray->apEnd[k];
    }
  }
  *ppData = pData;
  return 0;
}
# 7038 "src/btree.c"
static int pageFreeArray(
  MemPage *pPg,
  int iFirst,
  int nCell,
  CellArray *pCArray
){
  u8 * const aData = pPg->aData;
  u8 * const pEnd = &aData[pPg->pBt->usableSize];
  u8 * const pStart = &aData[pPg->hdrOffset + 8 + pPg->childPtrSize];
  int nRet = 0;
  int i;
  int iEnd = iFirst + nCell;
  u8 *pFree = 0;
  int szFree = 0;

  for(i=iFirst; i<iEnd; i++){
    u8 *pCell = pCArray->apCell[i];
    if( (((uptr)(pCell)>=(uptr)(pStart))&&((uptr)(pCell)<(uptr)(pEnd))) ){
      int sz;


      sz = pCArray->szCell[i]; assert( sz>0 );
      if( pFree!=(pCell + sz) ){
        if( pFree ){
          assert( pFree>aData && (pFree - aData)<65536 );
          freeSpace(pPg, (u16)(pFree - aData), szFree);
        }
        pFree = pCell;
        szFree = sz;
        if( pFree+sz>pEnd ) return 0;
      }else{
        pFree = pCell;
        szFree += sz;
      }
      nRet++;
    }
  }
  if( pFree ){
    assert( pFree>aData && (pFree - aData)<65536 );
    freeSpace(pPg, (u16)(pFree - aData), szFree);
  }
  return nRet;
}
# 7095 "src/btree.c"
static int editPage(
  MemPage *pPg,
  int iOld,
  int iNew,
  int nNew,
  CellArray *pCArray
){
  u8 * const aData = pPg->aData;
  const int hdr = pPg->hdrOffset;
  u8 *pBegin = &pPg->aCellIdx[nNew * 2];
  int nCell = pPg->nCell;
  u8 *pData;
  u8 *pCellptr;
  int i;
  int iOldEnd = iOld + pPg->nCell + pPg->nOverflow;
  int iNewEnd = iNew + nNew;


  assert( nCell>=0 );
  if( iOld<iNew ){
    int nShift = pageFreeArray(pPg, iOld, iNew-iOld, pCArray);
    if( nShift>nCell ) return sqlite3CorruptError(7121);
    memmove(pPg->aCellIdx, &pPg->aCellIdx[nShift*2], nCell*2);
    nCell -= nShift;
  }
  if( iNewEnd < iOldEnd ){
    int nTail = pageFreeArray(pPg, iNewEnd, iOldEnd - iNewEnd, pCArray);
    assert( nCell>=nTail );
    nCell -= nTail;
  }

  pData = &aData[(((((int)((&aData[hdr+5])[0]<<8 | (&aData[hdr+5])[1]))-1)&0xffff)+1)];
  if( pData<pBegin ) goto editpage_fail;


  if( iNew<iOld ){
    int nAdd = ((nNew)<(iOld-iNew)?(nNew):(iOld-iNew));
    assert( (iOld-iNew)<nNew || nCell==0 || (sqlite3Config.neverCorrupt==0) );
    assert( nAdd>=0 );
    pCellptr = pPg->aCellIdx;
    memmove(&pCellptr[nAdd*2], pCellptr, nCell*2);
    if( pageInsertArray(
          pPg, pBegin, &pData, pCellptr,
          iNew, nAdd, pCArray
    ) ) goto editpage_fail;
    nCell += nAdd;
  }


  for(i=0; i<pPg->nOverflow; i++){
    int iCell = (iOld + pPg->aiOvfl[i]) - iNew;
    if( iCell>=0 && iCell<nNew ){
      pCellptr = &pPg->aCellIdx[iCell * 2];
      if( nCell>iCell ){
        memmove(&pCellptr[2], pCellptr, (nCell - iCell) * 2);
      }
      nCell++;
      if( pageInsertArray(
            pPg, pBegin, &pData, pCellptr,
            iCell+iNew, 1, pCArray
      ) ) goto editpage_fail;
    }
  }


  assert( nCell>=0 );
  pCellptr = &pPg->aCellIdx[nCell*2];
  if( pageInsertArray(
        pPg, pBegin, &pData, pCellptr,
        iNew+nCell, nNew-nCell, pCArray
  ) ) goto editpage_fail;

  pPg->nCell = nNew;
  pPg->nOverflow = 0;

  ((&aData[hdr+3])[0] = (u8)((pPg->nCell)>>8), (&aData[hdr+3])[1] = (u8)(pPg->nCell));
  ((&aData[hdr+5])[0] = (u8)((pData - aData)>>8), (&aData[hdr+5])[1] = (u8)(pData - aData));
# 7190 "src/btree.c"
  return 0;
 editpage_fail:

  populateCellCache(pCArray, iNew, nNew);
  return rebuildPage(pCArray, iNew, nNew, pPg);
}
# 7222 "src/btree.c"
static int balance_quick(MemPage *pParent, MemPage *pPage, u8 *pSpace){
  BtShared *const pBt = pPage->pBt;
  MemPage *pNew;
  int rc;
  Pgno pgnoNew;

  assert( sqlite3_mutex_held(pPage->pBt->mutex) );
  assert( sqlite3PagerIswriteable(pParent->pDbPage) );
  assert( pPage->nOverflow==1 );

  if( pPage->nCell==0 ) return sqlite3CorruptError(7232);
  assert( pPage->nFree>=0 );
  assert( pParent->nFree>=0 );


  rc = allocateBtreePage(pBt, &pNew, &pgnoNew, 0, 0);

  if( rc==0 ){

    u8 *pOut = &pSpace[4];
    u8 *pCell = pPage->apOvfl[0];
    u16 szCell = pPage->xCellSize(pPage, pCell);
    u8 *pStop;
    CellArray b;

    assert( sqlite3PagerIswriteable(pNew->pDbPage) );
    assert( (sqlite3Config.neverCorrupt==0) || pPage->aData[0]==(0x01|0x04|0x08) );
    zeroPage(pNew, 0x01|0x04|0x08);
    b.nCell = 1;
    b.pRef = pPage;
    b.apCell = &pCell;
    b.szCell = &szCell;
    b.apEnd[0] = pPage->aDataEnd;
    b.ixNx[0] = 2;
    rc = rebuildPage(&b, 0, 1, pNew);
    if( (rc) ){
      releasePage(pNew);
      return rc;
    }
    pNew->nFree = pBt->usableSize - pNew->cellOffset - 2 - szCell;
# 7275 "src/btree.c"
    if( (pBt->autoVacuum) ){
      ptrmapPut(pBt, pgnoNew, 5, pParent->pgno, &rc);
      if( szCell>pNew->minLocal ){
        ptrmapPutOvflPtr(pNew, pNew, pCell, &rc);
      }
    }
# 7295 "src/btree.c"
    pCell = ((pPage)->aData + ((pPage)->maskPage & __builtin_bswap16(*(u16*)(&(pPage)->aCellIdx[2*(pPage->nCell-1)]))));
    pStop = &pCell[9];
    while( (*(pCell++)&0x80) && pCell<pStop );
    pStop = &pCell[9];
    while( ((*(pOut++) = *(pCell++))&0x80) && pCell<pStop );


    if( rc==0 ){
      insertCell(pParent, pParent->nCell, pSpace, (int)(pOut-pSpace),
                   0, pPage->pgno, &rc);
    }


    sqlite3Put4byte(&pParent->aData[pParent->hdrOffset+8], pgnoNew);


    releasePage(pNew);
  }

  return rc;
}
# 7377 "src/btree.c"
static void copyNodeContent(MemPage *pFrom, MemPage *pTo, int *pRC){
  if( (*pRC)==0 ){
    BtShared * const pBt = pFrom->pBt;
    u8 * const aFrom = pFrom->aData;
    u8 * const aTo = pTo->aData;
    int const iFromHdr = pFrom->hdrOffset;
    int const iToHdr = ((pTo->pgno==1) ? 100 : 0);
    int rc;
    int iData;


    assert( pFrom->isInit );
    assert( pFrom->nFree>=iToHdr );
    assert( ((&aFrom[iFromHdr+5])[0]<<8 | (&aFrom[iFromHdr+5])[1]) <= (int)pBt->usableSize );


    iData = ((&aFrom[iFromHdr+5])[0]<<8 | (&aFrom[iFromHdr+5])[1]);
    memcpy(&aTo[iData], &aFrom[iData], pBt->usableSize-iData);
    memcpy(&aTo[iToHdr], &aFrom[iFromHdr], pFrom->cellOffset + 2*pFrom->nCell);


    pTo->isInit = 0;
    rc = btreeInitPage(pTo);
    if( rc==0 ) rc = btreeComputeFreeSpace(pTo);
    if( rc!=0 ){
      *pRC = rc;
      return;
    }


    if( (pBt->autoVacuum) ){
      *pRC = setChildPtrmaps(pTo);
    }
  }
}
# 7459 "src/btree.c"
static int balance_nonroot(
  MemPage *pParent,
  int iParentIdx,
  u8 *aOvflSpace,
  int isRoot,
  int bBulk
){
  BtShared *pBt;
  int nMaxCells = 0;
  int nNew = 0;
  int nOld;
  int i, j, k;
  int nxDiv;
  int rc = 0;
  u16 leafCorrection;
  int leafData;
  int usableSpace;
  int pageFlags;
  int iSpace1 = 0;
  int iOvflSpace = 0;
  int szScratch;
  MemPage *apOld[3];
  MemPage *apNew[3 +2];
  u8 *pRight;
  u8 *apDiv[3 -1];
  int cntNew[3 +2];
  int cntOld[3 +2];
  int szNew[3 +2];
  u8 *aSpace1;
  Pgno pgno;
  u8 abDone[3 +2];
  Pgno aPgno[3 +2];
  Pgno aPgOrder[3 +2];
  u16 aPgFlags[3 +2];
  CellArray b;

  memset(abDone, 0, sizeof(abDone));
  b.nCell = 0;
  b.apCell = 0;
  pBt = pParent->pBt;
  assert( sqlite3_mutex_held(pBt->mutex) );
  assert( sqlite3PagerIswriteable(pParent->pDbPage) );


  assert( pParent->nOverflow==0 || pParent->nOverflow==1 );
  assert( pParent->nOverflow==0 || pParent->aiOvfl[0]==iParentIdx );

  if( !aOvflSpace ){
    return 7;
  }
  assert( pParent->nFree>=0 );
# 7526 "src/btree.c"
  i = pParent->nOverflow + pParent->nCell;
  if( i<2 ){
    nxDiv = 0;
  }else{
    assert( bBulk==0 || bBulk==1 );
    if( iParentIdx==0 ){
      nxDiv = 0;
    }else if( iParentIdx==i ){
      nxDiv = i-2+bBulk;
    }else{
      nxDiv = iParentIdx-1;
    }
    i = 2-bBulk;
  }
  nOld = i+1;
  if( (i+nxDiv-pParent->nOverflow)==pParent->nCell ){
    pRight = &pParent->aData[pParent->hdrOffset+8];
  }else{
    pRight = ((pParent)->aData + ((pParent)->maskPage & __builtin_bswap16(*(u16*)(&(pParent)->aCellIdx[2*(i+nxDiv-pParent->nOverflow)]))));
  }
  pgno = sqlite3Get4byte(pRight);
  while( 1 ){
    rc = getAndInitPage(pBt, pgno, &apOld[i], 0, 0);
    if( rc ){
      memset(apOld, 0, (i+1)*sizeof(MemPage*));
      goto balance_cleanup;
    }
    if( apOld[i]->nFree<0 ){
      rc = btreeComputeFreeSpace(apOld[i]);
      if( rc ){
        memset(apOld, 0, (i)*sizeof(MemPage*));
        goto balance_cleanup;
      }
    }
    if( (i--)==0 ) break;

    if( pParent->nOverflow && i+nxDiv==pParent->aiOvfl[0] ){
      apDiv[i] = pParent->apOvfl[0];
      pgno = sqlite3Get4byte(apDiv[i]);
      szNew[i] = pParent->xCellSize(pParent, apDiv[i]);
      pParent->nOverflow = 0;
    }else{
      apDiv[i] = ((pParent)->aData + ((pParent)->maskPage & __builtin_bswap16(*(u16*)(&(pParent)->aCellIdx[2*(i+nxDiv-pParent->nOverflow)]))));
      pgno = sqlite3Get4byte(apDiv[i]);
      szNew[i] = pParent->xCellSize(pParent, apDiv[i]);
# 7584 "src/btree.c"
      if( pBt->btsFlags & 0x000c ){
        int iOff;

        iOff = ((int)(long int)(apDiv[i])) - ((int)(long int)(pParent->aData));
        if( (iOff+szNew[i])>(int)pBt->usableSize ){
          rc = sqlite3CorruptError(7589);
          memset(apOld, 0, (i+1)*sizeof(MemPage*));
          goto balance_cleanup;
        }else{
          memcpy(&aOvflSpace[iOff], apDiv[i], szNew[i]);
          apDiv[i] = &aOvflSpace[apDiv[i]-pParent->aData];
        }
      }
      dropCell(pParent, i+nxDiv-pParent->nOverflow, szNew[i], &rc);
    }
  }


  nMaxCells = nOld*(((pBt->pageSize-8)/6) + ((int)(sizeof(pParent->apOvfl)/sizeof(pParent->apOvfl[0]))));
  nMaxCells = (nMaxCells + 3)&~3;


  szScratch =
       nMaxCells*sizeof(u8*)
     + nMaxCells*sizeof(u16)
     + pBt->pageSize;

  assert( szScratch<=7*(int)pBt->pageSize );
  b.apCell = sqlite3DbMallocRaw(0,szScratch);
  if( b.apCell==0 ){
    rc = 7;
    goto balance_cleanup;
  }
  b.szCell = (u16*)&b.apCell[nMaxCells];
  aSpace1 = (u8*)&b.szCell[nMaxCells];
  assert( ((((char*)(aSpace1) - (char*)0)&7)==0) );
# 7640 "src/btree.c"
  b.pRef = apOld[0];
  leafCorrection = b.pRef->leaf*4;
  leafData = b.pRef->intKeyLeaf;
  for(i=0; i<nOld; i++){
    MemPage *pOld = apOld[i];
    int limit = pOld->nCell;
    u8 *aData = pOld->aData;
    u16 maskPage = pOld->maskPage;
    u8 *piCell = aData + pOld->cellOffset;
    u8 *piEnd;
   

    if( pOld->aData[0]!=apOld[0]->aData[0] ){
      rc = sqlite3CorruptError(7656);
      goto balance_cleanup;
    }
# 7677 "src/btree.c"
    memset(&b.szCell[b.nCell], 0, sizeof(b.szCell[0])*(limit+pOld->nOverflow));
    if( pOld->nOverflow>0 ){
      if( limit<pOld->aiOvfl[0] ){
        rc = sqlite3CorruptError(7680);
        goto balance_cleanup;
      }
      limit = pOld->aiOvfl[0];
      for(j=0; j<limit; j++){
        b.apCell[b.nCell] = aData + (maskPage & __builtin_bswap16(*(u16*)(piCell)));
        piCell += 2;
        b.nCell++;
      }
      for(k=0; k<pOld->nOverflow; k++){
        assert( k==0 || pOld->aiOvfl[k-1]+1==pOld->aiOvfl[k] );
        b.apCell[b.nCell] = pOld->apOvfl[k];
        b.nCell++;
      }
    }
    piEnd = aData + pOld->cellOffset + 2*pOld->nCell;
    while( piCell<piEnd ){
      assert( b.nCell<nMaxCells );
      b.apCell[b.nCell] = aData + (maskPage & __builtin_bswap16(*(u16*)(piCell)));
      piCell += 2;
      b.nCell++;
    }
    assert( (b.nCell-nCellAtStart)==(pOld->nCell+pOld->nOverflow) );

    cntOld[i] = b.nCell;
    if( i<nOld-1 && !leafData){
      u16 sz = (u16)szNew[i];
      u8 *pTemp;
      assert( b.nCell<nMaxCells );
      b.szCell[b.nCell] = sz;
      pTemp = &aSpace1[iSpace1];
      iSpace1 += sz;
      assert( sz<=pBt->maxLocal+23 );
      assert( iSpace1 <= (int)pBt->pageSize );
      memcpy(pTemp, apDiv[i], sz);
      b.apCell[b.nCell] = pTemp+leafCorrection;
      assert( leafCorrection==0 || leafCorrection==4 );
      b.szCell[b.nCell] = b.szCell[b.nCell] - leafCorrection;
      if( !pOld->leaf ){
        assert( leafCorrection==0 );
        assert( pOld->hdrOffset==0 );


        memcpy(b.apCell[b.nCell], &pOld->aData[8], 4);
      }else{
        assert( leafCorrection==4 );
        while( b.szCell[b.nCell]<4 ){


          assert( b.szCell[b.nCell]==3 || (sqlite3Config.neverCorrupt==0) );
          assert( b.apCell[b.nCell]==&aSpace1[iSpace1-3] || (sqlite3Config.neverCorrupt==0) );
          aSpace1[iSpace1++] = 0x00;
          b.szCell[b.nCell]++;
        }
      }
      b.nCell++;
    }
  }
# 7755 "src/btree.c"
  usableSpace = pBt->usableSize - 12 + leafCorrection;
  for(i=k=0; i<nOld; i++, k++){
    MemPage *p = apOld[i];
    b.apEnd[k] = p->aDataEnd;
    b.ixNx[k] = cntOld[i];
    if( k && b.ixNx[k]==b.ixNx[k-1] ){
      k--;
    }
    if( !leafData ){
      k++;
      b.apEnd[k] = pParent->aDataEnd;
      b.ixNx[k] = cntOld[i]+1;
    }
    assert( p->nFree>=0 );
    szNew[i] = usableSpace - p->nFree;
    for(j=0; j<p->nOverflow; j++){
      szNew[i] += 2 + p->xCellSize(p, p->apOvfl[j]);
    }
    cntNew[i] = cntOld[i];
  }
  k = nOld;
  for(i=0; i<k; i++){
    int sz;
    while( szNew[i]>usableSpace ){
      if( i+1>=k ){
        k = i+2;
        if( k>3 +2 ){ rc = sqlite3CorruptError(7781); goto balance_cleanup; }
        szNew[k-1] = 0;
        cntNew[k-1] = b.nCell;
      }
      sz = 2 + cachedCellSize(&b, cntNew[i]-1);
      szNew[i] -= sz;
      if( !leafData ){
        if( cntNew[i]<b.nCell ){
          sz = 2 + cachedCellSize(&b, cntNew[i]);
        }else{
          sz = 0;
        }
      }
      szNew[i+1] += sz;
      cntNew[i]--;
    }
    while( cntNew[i]<b.nCell ){
      sz = 2 + cachedCellSize(&b, cntNew[i]);
      if( szNew[i]+sz>usableSpace ) break;
      szNew[i] += sz;
      cntNew[i]++;
      if( !leafData ){
        if( cntNew[i]<b.nCell ){
          sz = 2 + cachedCellSize(&b, cntNew[i]);
        }else{
          sz = 0;
        }
      }
      szNew[i+1] -= sz;
    }
    if( cntNew[i]>=b.nCell ){
      k = i+1;
    }else if( cntNew[i] <= (i>0 ? cntNew[i-1] : 0) ){
      rc = sqlite3CorruptError(7814);
      goto balance_cleanup;
    }
  }
# 7830 "src/btree.c"
  for(i=k-1; i>0; i--){
    int szRight = szNew[i];
    int szLeft = szNew[i-1];
    int r;
    int d;

    r = cntNew[i-1] - 1;
    d = r + 1 - leafData;
    (void)cachedCellSize(&b, d);
    do{
      assert( d<nMaxCells );
      assert( r<nMaxCells );
      (void)cachedCellSize(&b, r);
      if( szRight!=0
       && (bBulk || szRight+b.szCell[d]+2 > szLeft-(b.szCell[r]+(i==k-1?0:2)))){
        break;
      }
      szRight += b.szCell[d] + 2;
      szLeft -= b.szCell[r] + 2;
      cntNew[i-1] = r;
      r--;
      d--;
    }while( r>=0 );
    szNew[i] = szRight;
    szNew[i-1] = szLeft;
    if( cntNew[i-1] <= (i>1 ? cntNew[i-2] : 0) ){
      rc = sqlite3CorruptError(7856);
      goto balance_cleanup;
    }
  }
# 7868 "src/btree.c"
  assert( cntNew[0]>0 || (pParent->pgno==1 && pParent->nCell==0) || (sqlite3Config.neverCorrupt==0));
 

    ;


  pageFlags = apOld[0]->aData[0];
  for(i=0; i<k; i++){
    MemPage *pNew;
    if( i<nOld ){
      pNew = apNew[i] = apOld[i];
      apOld[i] = 0;
      rc = sqlite3PagerWrite(pNew->pDbPage);
      nNew++;
      if( rc ) goto balance_cleanup;
    }else{
      assert( i>0 );
      rc = allocateBtreePage(pBt, &pNew, &pgno, (bBulk ? 1 : pgno), 0);
      if( rc ) goto balance_cleanup;
      zeroPage(pNew, pageFlags);
      apNew[i] = pNew;
      nNew++;
      cntOld[i] = b.nCell;


      if( (pBt->autoVacuum) ){
        ptrmapPut(pBt, pNew->pgno, 5, pParent->pgno, &rc);
        if( rc!=0 ){
          goto balance_cleanup;
        }
      }
    }
  }
# 7918 "src/btree.c"
  for(i=0; i<nNew; i++){
    aPgOrder[i] = aPgno[i] = apNew[i]->pgno;
    aPgFlags[i] = apNew[i]->pDbPage->flags;
    for(j=0; j<i; j++){
      if( aPgno[j]==aPgno[i] ){


        assert( (sqlite3Config.neverCorrupt==0) );
        rc = sqlite3CorruptError(7930);
        goto balance_cleanup;
      }
    }
  }
  for(i=0; i<nNew; i++){
    int iBest = 0;
    for(j=1; j<nNew; j++){
      if( aPgOrder[j]<aPgOrder[iBest] ) iBest = j;
    }
    pgno = aPgOrder[iBest];
    aPgOrder[iBest] = 0xffffffff;
    if( iBest!=i ){
      if( iBest>i ){
        sqlite3PagerRekey(apNew[iBest]->pDbPage, pBt->nPage+iBest+1, 0);
      }
      sqlite3PagerRekey(apNew[i]->pDbPage, pgno, aPgFlags[iBest]);
      apNew[i]->pgno = pgno;
    }
  }

 
# 7962 "src/btree.c"
    ;

  assert( sqlite3PagerIswriteable(pParent->pDbPage) );
  sqlite3Put4byte(pRight, apNew[nNew-1]->pgno);


  if( (pageFlags & 0x08)==0 && nOld!=nNew ){
    MemPage *pOld = (nNew>nOld ? apNew : apOld)[nOld-1];
    memcpy(&apNew[nNew-1]->aData[8], &pOld->aData[8], 4);
  }
# 7991 "src/btree.c"
  if( (pBt->autoVacuum) ){
    MemPage *pOld;
    MemPage *pNew = pOld = apNew[0];
    int cntOldNext = pNew->nCell + pNew->nOverflow;
    int iNew = 0;
    int iOld = 0;

    for(i=0; i<b.nCell; i++){
      u8 *pCell = b.apCell[i];
      while( i==cntOldNext ){
        iOld++;
        assert( iOld<nNew || iOld<nOld );
        assert( iOld>=0 && iOld<3 );
        pOld = iOld<nNew ? apNew[iOld] : apOld[iOld];
        cntOldNext += pOld->nCell + pOld->nOverflow + !leafData;
      }
      if( i==cntNew[iNew] ){
        pNew = apNew[++iNew];
        if( !leafData ) continue;
      }


      if( iOld>=nNew
       || pNew->pgno!=aPgno[iOld]
       || !(((uptr)(pCell)>=(uptr)(pOld->aData))&&((uptr)(pCell)<(uptr)(pOld->aDataEnd)))
      ){
        if( !leafCorrection ){
          ptrmapPut(pBt, sqlite3Get4byte(pCell), 5, pNew->pgno, &rc);
        }
        if( cachedCellSize(&b,i)>pNew->minLocal ){
          ptrmapPutOvflPtr(pNew, pOld, pCell, &rc);
        }
        if( rc ) goto balance_cleanup;
      }
    }
  }


  for(i=0; i<nNew-1; i++){
    u8 *pCell;
    u8 *pTemp;
    int sz;
    MemPage *pNew = apNew[i];
    j = cntNew[i];

    assert( j<nMaxCells );
    assert( b.apCell[j]!=0 );
    pCell = b.apCell[j];
    sz = b.szCell[j] + leafCorrection;
    pTemp = &aOvflSpace[iOvflSpace];
    if( !pNew->leaf ){
      memcpy(&pNew->aData[8], pCell, 4);
    }else if( leafData ){


      CellInfo info;
      j--;
      pNew->xParseCell(pNew, b.apCell[j], &info);
      pCell = pTemp;
      sz = 4 + sqlite3PutVarint(&pCell[4], info.nKey);
      pTemp = 0;
    }else{
      pCell -= 4;
# 8073 "src/btree.c"
      if( b.szCell[j]==4 ){
        assert(leafCorrection==4);
        sz = pParent->xCellSize(pParent, pCell);
      }
    }
    iOvflSpace += sz;
    assert( sz<=pBt->maxLocal+23 );
    assert( iOvflSpace <= (int)pBt->pageSize );
    insertCell(pParent, nxDiv+i, pCell, sz, pTemp, pNew->pgno, &rc);
    if( rc!=0 ) goto balance_cleanup;
    assert( sqlite3PagerIswriteable(pParent->pDbPage) );
  }
# 8108 "src/btree.c"
  for(i=1-nNew; i<nNew; i++){
    int iPg = i<0 ? -i : i;
    assert( iPg>=0 && iPg<nNew );
    if( abDone[iPg] ) continue;
    if( i>=0
     || cntOld[iPg-1]>=cntNew[iPg-1]
    ){
      int iNew;
      int iOld;
      int nNewCell;


      assert( iPg==0 || cntOld[iPg-1]>=cntNew[iPg-1] || abDone[iPg-1] );


      assert( cntNew[iPg]>=cntOld[iPg] || abDone[iPg+1] );

      if( iPg==0 ){
        iNew = iOld = 0;
        nNewCell = cntNew[0];
      }else{
        iOld = iPg<nOld ? (cntOld[iPg-1] + !leafData) : b.nCell;
        iNew = cntNew[iPg-1] + !leafData;
        nNewCell = cntNew[iPg] - iNew;
      }

      rc = editPage(apNew[iPg], iOld, iNew, nNewCell, &b);
      if( rc ) goto balance_cleanup;
      abDone[iPg]++;
      apNew[iPg]->nFree = usableSpace-szNew[iPg];
      assert( apNew[iPg]->nOverflow==0 );
      assert( apNew[iPg]->nCell==nNewCell );
    }
  }


  assert( memcmp(abDone, "\01\01\01\01\01", nNew)==0 );

  assert( nOld>0 );
  assert( nNew>0 );

  if( isRoot && pParent->nCell==0 && pParent->hdrOffset<=apNew[0]->nFree ){
# 8167 "src/btree.c"
    assert( nNew==1 || (sqlite3Config.neverCorrupt==0) );
    rc = defragmentPage(apNew[0], -1);
    ;
    assert( apNew[0]->nFree ==
        ((((((int)((&apNew[0]->aData[5])[0]<<8 | (&apNew[0]->aData[5])[1]))-1)&0xffff)+1) - apNew[0]->cellOffset
          - apNew[0]->nCell*2)
      || rc!=0
    );
    copyNodeContent(apNew[0], pParent, &rc);
    freePage(apNew[0], &rc);
  }else if( (pBt->autoVacuum) && !leafCorrection ){


    for(i=0; i<nNew; i++){
      u32 key = sqlite3Get4byte(&apNew[i]->aData[8]);
      ptrmapPut(pBt, key, 5, apNew[i]->pgno, &rc);
    }
  }

  assert( pParent->isInit );
 
                               ;


  for(i=nNew; i<nOld; i++){
    freePage(apOld[i], &rc);
  }
# 8211 "src/btree.c"
balance_cleanup:
  sqlite3DbFree(0,b.apCell);
  for(i=0; i<nOld; i++){
    releasePage(apOld[i]);
  }
  for(i=0; i<nNew; i++){
    releasePage(apNew[i]);
  }

  return rc;
}
# 8243 "src/btree.c"
static int balance_deeper(MemPage *pRoot, MemPage **ppChild){
  int rc;
  MemPage *pChild = 0;
  Pgno pgnoChild = 0;
  BtShared *pBt = pRoot->pBt;

  assert( pRoot->nOverflow>0 );
  assert( sqlite3_mutex_held(pBt->mutex) );


  rc = sqlite3PagerWrite(pRoot->pDbPage);
  if( rc==0 ){
    rc = allocateBtreePage(pBt,&pChild,&pgnoChild,pRoot->pgno,0);
    copyNodeContent(pRoot, pChild, &rc);
    if( (pBt->autoVacuum) ){
      ptrmapPut(pBt, pgnoChild, 5, pRoot->pgno, &rc);
    }
  }
  if( rc ){
    *ppChild = 0;
    releasePage(pChild);
    return rc;
  }
  assert( sqlite3PagerIswriteable(pChild->pDbPage) );
  assert( sqlite3PagerIswriteable(pRoot->pDbPage) );
  assert( pChild->nCell==pRoot->nCell || (sqlite3Config.neverCorrupt==0) );

  ;


  memcpy(pChild->aiOvfl, pRoot->aiOvfl,
         pRoot->nOverflow*sizeof(pRoot->aiOvfl[0]));
  memcpy(pChild->apOvfl, pRoot->apOvfl,
         pRoot->nOverflow*sizeof(pRoot->apOvfl[0]));
  pChild->nOverflow = pRoot->nOverflow;


  zeroPage(pRoot, pChild->aData[0] & ~0x08);
  sqlite3Put4byte(&pRoot->aData[pRoot->hdrOffset+8], pgnoChild);

  *ppChild = pChild;
  return 0;
}
# 8300 "src/btree.c"
static int balance(BtCursor *pCur){
  int rc = 0;
  const int nMin = pCur->pBt->usableSize * 2 / 3;
  u8 aBalanceQuickSpace[13];
  u8 *pFree = 0;

  ;
  ;

  do {
    int iPage = pCur->iPage;
    MemPage *pPage = pCur->pPage;

    if( (pPage->nFree<0) && btreeComputeFreeSpace(pPage) ) break;
    if( iPage==0 ){
      if( pPage->nOverflow ){


        assert( balance_deeper_called==0 );
        ;
        rc = balance_deeper(pPage, &pCur->apPage[1]);
        if( rc==0 ){
          pCur->iPage = 1;
          pCur->ix = 0;
          pCur->aiIdx[0] = 0;
          pCur->apPage[0] = pPage;
          pCur->pPage = pCur->apPage[1];
          assert( pCur->pPage->nOverflow );
        }
      }else{
        break;
      }
    }else if( pPage->nOverflow==0 && pPage->nFree<=nMin ){
      break;
    }else{
      MemPage * const pParent = pCur->apPage[iPage-1];
      int const iIdx = pCur->aiIdx[iPage-1];

      rc = sqlite3PagerWrite(pParent->pDbPage);
      if( rc==0 && pParent->nFree<0 ){
        rc = btreeComputeFreeSpace(pParent);
      }
      if( rc==0 ){

        if( pPage->intKeyLeaf
         && pPage->nOverflow==1
         && pPage->aiOvfl[0]==pPage->nCell
         && pParent->pgno!=1
         && pParent->nCell==iIdx
        ){
# 8366 "src/btree.c"
          assert( balance_quick_called==0 );
          ;
          rc = balance_quick(pParent, pPage, aBalanceQuickSpace);
        }else

        {
# 8389 "src/btree.c"
          u8 *pSpace = sqlite3PageMalloc(pCur->pBt->pageSize);
          rc = balance_nonroot(pParent, iIdx, pSpace, iPage==1,
                               pCur->hints&0x00000001);
          if( pFree ){


            sqlite3PageFree(pFree);
          }


          pFree = pSpace;
        }
      }

      pPage->nOverflow = 0;


      releasePage(pPage);
      pCur->iPage--;
      assert( pCur->iPage>=0 );
      pCur->pPage = pCur->apPage[pCur->iPage];
    }
  }while( rc==0 );

  if( pFree ){
    sqlite3PageFree(pFree);
  }
  return rc;
}


static int btreeOverwriteContent(
  MemPage *pPage,
  u8 *pDest,
  const BtreePayload *pX,
  int iOffset,
  int iAmt
){
  int nData = pX->nData - iOffset;
  if( nData<=0 ){

    int i;
    for(i=0; i<iAmt && pDest[i]==0; i++){}
    if( i<iAmt ){
      int rc = sqlite3PagerWrite(pPage->pDbPage);
      if( rc ) return rc;
      memset(pDest + i, 0, iAmt - i);
    }
  }else{
    if( nData<iAmt ){


      int rc = btreeOverwriteContent(pPage, pDest+nData, pX, iOffset+nData,
                                 iAmt-nData);
      if( rc ) return rc;
      iAmt = nData;
    }
    if( memcmp(pDest, ((u8*)pX->pData) + iOffset, iAmt)!=0 ){
      int rc = sqlite3PagerWrite(pPage->pDbPage);
      if( rc ) return rc;


      memmove(pDest, ((u8*)pX->pData) + iOffset, iAmt);
    }
  }
  return 0;
}


static int btreeOverwriteCell(BtCursor *pCur, const BtreePayload *pX){
  int iOffset;
  int nTotal = pX->nData + pX->nZero;
  int rc;
  MemPage *pPage = pCur->pPage;
  BtShared *pBt;
  Pgno ovflPgno;
  u32 ovflPageSize;

  if( pCur->info.pPayload + pCur->info.nLocal > pPage->aDataEnd ){
    return sqlite3CorruptError(8479);
  }

  rc = btreeOverwriteContent(pPage, pCur->info.pPayload, pX,
                             0, pCur->info.nLocal);
  if( rc ) return rc;
  if( pCur->info.nLocal==nTotal ) return 0;


  iOffset = pCur->info.nLocal;
  assert( nTotal>=0 );
  assert( iOffset>=0 );
  ovflPgno = sqlite3Get4byte(pCur->info.pPayload + iOffset);
  pBt = pPage->pBt;
  ovflPageSize = pBt->usableSize - 4;
  do{
    rc = btreeGetPage(pBt, ovflPgno, &pPage, 0);
    if( rc ) return rc;
    if( sqlite3PagerPageRefcount(pPage->pDbPage)!=1 ){
      rc = sqlite3CorruptError(8498);
    }else{
      if( iOffset+ovflPageSize<(u32)nTotal ){
        ovflPgno = sqlite3Get4byte(pPage->aData);
      }else{
        ovflPageSize = nTotal - iOffset;
      }
      rc = btreeOverwriteContent(pPage, pPage->aData+4, pX,
                                 iOffset, ovflPageSize);
    }
    sqlite3PagerUnref(pPage->pDbPage);
    if( rc ) return rc;
    iOffset += ovflPageSize;
  }while( iOffset<nTotal );
  return 0;
}
# 8546 "src/btree.c"
int sqlite3BtreeInsert(
  BtCursor *pCur,
  const BtreePayload *pX,
  int flags,
  int seekResult
){
  int rc;
  int loc = seekResult;
  int szNew = 0;
  int idx;
  MemPage *pPage;
  Btree *p = pCur->pBtree;
  BtShared *pBt = p->pBt;
  unsigned char *oldCell;
  unsigned char *newCell = 0;

  assert( (flags & (0x02|0x08))==flags );

  if( pCur->eState==4 ){
    assert( pCur->skipNext!=0 );
    return pCur->skipNext;
  }

  assert( cursorOwnsBtShared(pCur) );
  assert( (pCur->curFlags & 0x01)!=0
              && pBt->inTransaction==2
              && (pBt->btsFlags & 0x0001)==0 );
  assert( hasSharedCacheTableLock(p, pCur->pgnoRoot, pCur->pKeyInfo!=0, 2) );


  assert( (pX->pKey==0)==(pCur->pKeyInfo==0) );
# 8593 "src/btree.c"
  if( pCur->curFlags & 0x20 ){
    rc = saveAllCursors(pBt, pCur->pgnoRoot, pCur);
    if( rc ) return rc;
  }

  if( pCur->pKeyInfo==0 ){
    assert( pX->pKey==0 );


    invalidateIncrblobCursors(p, pCur->pgnoRoot, pX->nKey, 0);
# 8620 "src/btree.c"
    if( (pCur->curFlags&0x02)!=0 && pX->nKey==pCur->info.nKey ){


      assert( pX->nData>=0 && pX->nZero>=0 );
      if( pCur->info.nSize!=0
       && pCur->info.nPayload==(u32)pX->nData+pX->nZero
      ){

        return btreeOverwriteCell(pCur, pX);
      }
      assert( loc==0 );
    }else if( loc==0 ){


      rc = sqlite3BtreeMovetoUnpacked(pCur, 0, pX->nKey, flags!=0, &loc);
      if( rc ) return rc;
    }
  }else{


    assert( (flags & 0x02)==0 || loc==0 );


    if( loc==0 && (flags & 0x02)==0 ){
      if( pX->nMem ){
        UnpackedRecord r;
        r.pKeyInfo = pCur->pKeyInfo;
        r.aMem = pX->aMem;
        r.nField = pX->nMem;
        r.default_rc = 0;
        r.errCode = 0;
        r.r1 = 0;
        r.r2 = 0;
        r.eqSeen = 0;
        rc = sqlite3BtreeMovetoUnpacked(pCur, &r, 0, flags!=0, &loc);
      }else{
        rc = btreeMoveto(pCur, pX->pKey, pX->nKey, flags!=0, &loc);
      }
      if( rc ) return rc;
    }


    if( loc==0 ){
      getCellInfo(pCur);
      if( pCur->info.nKey==pX->nKey ){
        BtreePayload x2;
        x2.pData = pX->pKey;
        x2.nData = pX->nKey;
        x2.nZero = 0;
        return btreeOverwriteCell(pCur, &x2);
      }
    }

  }
  assert( pCur->eState==0 || (pCur->eState==1 && loc) );

  pPage = pCur->pPage;
  assert( pPage->intKey || pX->nKey>=0 );
  assert( pPage->leaf || !pPage->intKey );
  if( pPage->nFree<0 ){
    rc = btreeComputeFreeSpace(pPage);
    if( rc ) return rc;
  }

 
                                              ;
  assert( pPage->isInit );
  newCell = pBt->pTmpSpace;
  assert( newCell!=0 );
  rc = fillInCell(pPage, newCell, pX, &szNew);
  if( rc ) goto end_insert;
  assert( szNew==pPage->xCellSize(pPage, newCell) );
  assert( szNew <= ((int)(pBt->pageSize-8)) );
  idx = pCur->ix;
  if( loc==0 ){
    CellInfo info;
    assert( idx<pPage->nCell );
    rc = sqlite3PagerWrite(pPage->pDbPage);
    if( rc ){
      goto end_insert;
    }
    oldCell = ((pPage)->aData + ((pPage)->maskPage & __builtin_bswap16(*(u16*)(&(pPage)->aCellIdx[2*(idx)]))));
    if( !pPage->leaf ){
      memcpy(newCell, oldCell, 4);
    }
    rc = clearCell(pPage, oldCell, &info);
    if( info.nSize==szNew && info.nLocal==info.nPayload
     && (!(pBt->autoVacuum) || szNew<pPage->minLocal)
    ){
# 8731 "src/btree.c"
      assert( rc==0 );
      if( oldCell+szNew > pPage->aDataEnd ) return sqlite3CorruptError(8732);
      memcpy(oldCell, newCell, szNew);
      return 0;
    }
    dropCell(pPage, idx, info.nSize, &rc);
    if( rc ) goto end_insert;
  }else if( loc<0 && pPage->nCell>0 ){
    assert( pPage->leaf );
    idx = ++pCur->ix;
    pCur->curFlags &= ~0x02;
  }else{
    assert( pPage->leaf );
  }
  insertCell(pPage, idx, newCell, szNew, 0, 0, &rc);
  assert( pPage->nOverflow==0 || rc==0 );
  assert( rc!=0 || pPage->nCell>0 || pPage->nOverflow>0 );
# 8769 "src/btree.c"
  pCur->info.nSize = 0;
  if( pPage->nOverflow ){
    assert( rc==0 );
    pCur->curFlags &= ~(0x02);
    rc = balance(pCur);


    pCur->pPage->nOverflow = 0;
    pCur->eState = 1;
    if( (flags & 0x02) && rc==0 ){
      btreeReleaseAllCursorPages(pCur);
      if( pCur->pKeyInfo ){
        assert( pCur->pKey==0 );
        pCur->pKey = sqlite3Malloc( pX->nKey );
        if( pCur->pKey==0 ){
          rc = 7;
        }else{
          memcpy(pCur->pKey, pX->pKey, pX->nKey);
        }
      }
      pCur->eState = 3;
      pCur->nKey = pX->nKey;
    }
  }
  assert( pCur->iPage<0 || pCur->pPage->nOverflow==0 );

end_insert:
  return rc;
}
# 8819 "src/btree.c"
int sqlite3BtreeDelete(BtCursor *pCur, u8 flags){
  Btree *p = pCur->pBtree;
  BtShared *pBt = p->pBt;
  int rc;
  MemPage *pPage;
  unsigned char *pCell;
  int iCellIdx;
  int iCellDepth;
  CellInfo info;
  int bSkipnext = 0;
  u8 bPreserve = flags & 0x02;

  assert( cursorOwnsBtShared(pCur) );
  assert( pBt->inTransaction==2 );
  assert( (pBt->btsFlags & 0x0001)==0 );
  assert( pCur->curFlags & 0x01 );
  assert( hasSharedCacheTableLock(p, pCur->pgnoRoot, pCur->pKeyInfo!=0, 2) );
  assert( !hasReadConflicts(p, pCur->pgnoRoot) );
  assert( (flags & ~(0x02 | 0x04))==0 );
  if( pCur->eState==3 ){
    rc = btreeRestoreCursorPosition(pCur);
    if( rc ) return rc;
  }
  assert( pCur->eState==0 );

  iCellDepth = pCur->iPage;
  iCellIdx = pCur->ix;
  pPage = pCur->pPage;
  pCell = ((pPage)->aData + ((pPage)->maskPage & __builtin_bswap16(*(u16*)(&(pPage)->aCellIdx[2*(iCellIdx)]))));
  if( pPage->nFree<0 && btreeComputeFreeSpace(pPage) ) return 11;
# 8859 "src/btree.c"
  if( bPreserve ){
    if( !pPage->leaf
     || (pPage->nFree+cellSizePtr(pPage,pCell)+2)>(int)(pBt->usableSize*2/3)
     || pPage->nCell==1
    ){


      rc = saveCursorKey(pCur);
      if( rc ) return rc;
    }else{
      bSkipnext = 1;
    }
  }
# 8880 "src/btree.c"
  if( !pPage->leaf ){
    rc = sqlite3BtreePrevious(pCur, 0);
    assert( rc!=101 );
    if( rc ) return rc;
  }


  if( pCur->curFlags & 0x20 ){
    rc = saveAllCursors(pBt, pCur->pgnoRoot, pCur);
    if( rc ) return rc;
  }


  if( pCur->pKeyInfo==0 ){
    invalidateIncrblobCursors(p, pCur->pgnoRoot, pCur->info.nKey, 0);
  }


  rc = sqlite3PagerWrite(pPage->pDbPage);
  if( rc ) return rc;
  rc = clearCell(pPage, pCell, &info);
  dropCell(pPage, iCellIdx, info.nSize, &rc);
  if( rc ) return rc;


  if( !pPage->leaf ){
    MemPage *pLeaf = pCur->pPage;
    int nCell;
    Pgno n;
    unsigned char *pTmp;

    if( pLeaf->nFree<0 ){
      rc = btreeComputeFreeSpace(pLeaf);
      if( rc ) return rc;
    }
    if( iCellDepth<pCur->iPage-1 ){
      n = pCur->apPage[iCellDepth+1]->pgno;
    }else{
      n = pCur->pPage->pgno;
    }
    pCell = ((pLeaf)->aData + ((pLeaf)->maskPage & __builtin_bswap16(*(u16*)(&(pLeaf)->aCellIdx[2*(pLeaf->nCell-1)]))));
    if( pCell<&pLeaf->aData[4] ) return sqlite3CorruptError(8929);
    nCell = pLeaf->xCellSize(pLeaf, pCell);
    assert( ((int)(pBt->pageSize-8)) >= nCell );
    pTmp = pBt->pTmpSpace;
    assert( pTmp!=0 );
    rc = sqlite3PagerWrite(pLeaf->pDbPage);
    if( rc==0 ){
      insertCell(pPage, iCellIdx, pCell-4, nCell+4, pTmp, n, &rc);
    }
    dropCell(pLeaf, pLeaf->nCell-1, nCell, &rc);
    if( rc ) return rc;
  }
# 8957 "src/btree.c"
  rc = balance(pCur);
  if( rc==0 && pCur->iPage>iCellDepth ){
    releasePageNotNull(pCur->pPage);
    pCur->iPage--;
    while( pCur->iPage>iCellDepth ){
      releasePage(pCur->apPage[pCur->iPage--]);
    }
    pCur->pPage = pCur->apPage[pCur->iPage];
    rc = balance(pCur);
  }

  if( rc==0 ){
    if( bSkipnext ){
      assert( bPreserve && (pCur->iPage==iCellDepth || (sqlite3Config.neverCorrupt==0)) );
      assert( pPage==pCur->pPage || (sqlite3Config.neverCorrupt==0) );
      assert( (pPage->nCell>0 || (sqlite3Config.neverCorrupt==0)) && iCellIdx<=pPage->nCell );
      pCur->eState = 2;
      if( iCellIdx>=pPage->nCell ){
        pCur->skipNext = -1;
        pCur->ix = pPage->nCell-1;
      }else{
        pCur->skipNext = 1;
      }
    }else{
      rc = moveToRoot(pCur);
      if( bPreserve ){
        btreeReleaseAllCursorPages(pCur);
        pCur->eState = 3;
      }
      if( rc==16 ) rc = 0;
    }
  }
  return rc;
}
# 9003 "src/btree.c"
static int btreeCreateTable(Btree *p, int *piTable, int createTabFlags){
  BtShared *pBt = p->pBt;
  MemPage *pRoot;
  Pgno pgnoRoot;
  int rc;
  int ptfFlags;

  assert( sqlite3BtreeHoldsMutex(p) );
  assert( pBt->inTransaction==2 );
  assert( (pBt->btsFlags & 0x0001)==0 );


  if( pBt->autoVacuum ){
    Pgno pgnoMove;
    MemPage *pPageMove;


    invalidateAllOverflowCache(pBt);


    sqlite3BtreeGetMeta(p, 4, &pgnoRoot);
    pgnoRoot++;


    while( pgnoRoot==ptrmapPageno(pBt, pgnoRoot) ||
        pgnoRoot==((Pgno)((sqlite3PendingByte/((pBt)->pageSize))+1)) ){
      pgnoRoot++;
    }
    assert( pgnoRoot>=3 || (sqlite3Config.neverCorrupt==0) );
    ;


    rc = allocateBtreePage(pBt, &pPageMove, &pgnoMove, pgnoRoot, 1);
    if( rc!=0 ){
      return rc;
    }

    if( pgnoMove!=pgnoRoot ){


      u8 eType = 0;
      Pgno iPtrPage = 0;


      rc = saveAllCursors(pBt, 0, 0);
      releasePage(pPageMove);
      if( rc!=0 ){
        return rc;
      }


      rc = btreeGetPage(pBt, pgnoRoot, &pRoot, 0);
      if( rc!=0 ){
        return rc;
      }
      rc = ptrmapGet(pBt, pgnoRoot, &eType, &iPtrPage);
      if( eType==1 || eType==2 ){
        rc = sqlite3CorruptError(9083);
      }
      if( rc!=0 ){
        releasePage(pRoot);
        return rc;
      }
      assert( eType!=1 );
      assert( eType!=2 );
      rc = relocatePage(pBt, pRoot, eType, iPtrPage, pgnoMove, 0);
      releasePage(pRoot);


      if( rc!=0 ){
        return rc;
      }
      rc = btreeGetPage(pBt, pgnoRoot, &pRoot, 0);
      if( rc!=0 ){
        return rc;
      }
      rc = sqlite3PagerWrite(pRoot->pDbPage);
      if( rc!=0 ){
        releasePage(pRoot);
        return rc;
      }
    }else{
      pRoot = pPageMove;
    }


    ptrmapPut(pBt, pgnoRoot, 1, 0, &rc);
    if( rc ){
      releasePage(pRoot);
      return rc;
    }


    assert( sqlite3PagerIswriteable(pBt->pPage1->pDbPage) );
    rc = sqlite3BtreeUpdateMeta(p, 4, pgnoRoot);
    if( (rc) ){
      releasePage(pRoot);
      return rc;
    }

  }else{
    rc = allocateBtreePage(pBt, &pRoot, &pgnoRoot, 1, 0);
    if( rc ) return rc;
  }

  assert( sqlite3PagerIswriteable(pRoot->pDbPage) );
  if( createTabFlags & 1 ){
    ptfFlags = 0x01 | 0x04 | 0x08;
  }else{
    ptfFlags = 0x02 | 0x08;
  }
  zeroPage(pRoot, ptfFlags);
  sqlite3PagerUnref(pRoot->pDbPage);
  assert( (pBt->openFlags & 4)==0 || pgnoRoot==2 );
  *piTable = (int)pgnoRoot;
  return 0;
}
int sqlite3BtreeCreateTable(Btree *p, int *piTable, int flags){
  int rc;
  sqlite3BtreeEnter(p);
  rc = btreeCreateTable(p, piTable, flags);
  sqlite3BtreeLeave(p);
  return rc;
}


static int clearDatabasePage(
  BtShared *pBt,
  Pgno pgno,
  int freePageFlag,
  int *pnChange
){
  MemPage *pPage;
  int rc;
  unsigned char *pCell;
  int i;
  int hdr;
  CellInfo info;

  assert( sqlite3_mutex_held(pBt->mutex) );
  if( pgno>btreePagecount(pBt) ){
    return sqlite3CorruptError(9173);
  }
  rc = getAndInitPage(pBt, pgno, &pPage, 0, 0);
  if( rc ) return rc;
  if( pPage->bBusy ){
    rc = sqlite3CorruptError(9178);
    goto cleardatabasepage_out;
  }
  pPage->bBusy = 1;
  hdr = pPage->hdrOffset;
  for(i=0; i<pPage->nCell; i++){
    pCell = ((pPage)->aData + ((pPage)->maskPage & __builtin_bswap16(*(u16*)(&(pPage)->aCellIdx[2*(i)]))));
    if( !pPage->leaf ){
      rc = clearDatabasePage(pBt, sqlite3Get4byte(pCell), 1, pnChange);
      if( rc ) goto cleardatabasepage_out;
    }
    rc = clearCell(pPage, pCell, &info);
    if( rc ) goto cleardatabasepage_out;
  }
  if( !pPage->leaf ){
    rc = clearDatabasePage(pBt, sqlite3Get4byte(&pPage->aData[hdr+8]), 1, pnChange);
    if( rc ) goto cleardatabasepage_out;
  }else if( pnChange ){
    assert( pPage->intKey || (sqlite3Config.neverCorrupt==0) );
    ;
    *pnChange += pPage->nCell;
  }
  if( freePageFlag ){
    freePage(pPage, &rc);
  }else if( (rc = sqlite3PagerWrite(pPage->pDbPage))==0 ){
    zeroPage(pPage, pPage->aData[hdr] | 0x08);
  }

cleardatabasepage_out:
  pPage->bBusy = 0;
  releasePage(pPage);
  return rc;
}
# 9225 "src/btree.c"
int sqlite3BtreeClearTable(Btree *p, int iTable, int *pnChange){
  int rc;
  BtShared *pBt = p->pBt;
  sqlite3BtreeEnter(p);
  assert( p->inTrans==2 );

  rc = saveAllCursors(pBt, (Pgno)iTable, 0);

  if( 0==rc ){


    invalidateIncrblobCursors(p, (Pgno)iTable, 0, 1);
    rc = clearDatabasePage(pBt, (Pgno)iTable, 0, pnChange);
  }
  sqlite3BtreeLeave(p);
  return rc;
}


int sqlite3BtreeClearTableOfCursor(BtCursor *pCur){
  return sqlite3BtreeClearTable(pCur->pBtree, pCur->pgnoRoot, 0);
}
# 9273 "src/btree.c"
static int btreeDropTable(Btree *p, Pgno iTable, int *piMoved){
  int rc;
  MemPage *pPage = 0;
  BtShared *pBt = p->pBt;

  assert( sqlite3BtreeHoldsMutex(p) );
  assert( p->inTrans==2 );
  assert( iTable>=2 );
  if( iTable>btreePagecount(pBt) ){
    return sqlite3CorruptError(9282);
  }

  rc = btreeGetPage(pBt, (Pgno)iTable, &pPage, 0);
  if( rc ) return rc;
  rc = sqlite3BtreeClearTable(p, iTable, 0);
  if( rc ){
    releasePage(pPage);
    return rc;
  }

  *piMoved = 0;


  if( pBt->autoVacuum ){
    Pgno maxRootPgno;
    sqlite3BtreeGetMeta(p, 4, &maxRootPgno);

    if( iTable==maxRootPgno ){


      freePage(pPage, &rc);
      releasePage(pPage);
      if( rc!=0 ){
        return rc;
      }
    }else{


      MemPage *pMove;
      releasePage(pPage);
      rc = btreeGetPage(pBt, maxRootPgno, &pMove, 0);
      if( rc!=0 ){
        return rc;
      }
      rc = relocatePage(pBt, pMove, 1, 0, iTable, 0);
      releasePage(pMove);
      if( rc!=0 ){
        return rc;
      }
      pMove = 0;
      rc = btreeGetPage(pBt, maxRootPgno, &pMove, 0);
      freePage(pMove, &rc);
      releasePage(pMove);
      if( rc!=0 ){
        return rc;
      }
      *piMoved = maxRootPgno;
    }


    maxRootPgno--;
    while( maxRootPgno==((Pgno)((sqlite3PendingByte/((pBt)->pageSize))+1))
           || (ptrmapPageno((pBt), (maxRootPgno))==(maxRootPgno)) ){
      maxRootPgno--;
    }
    assert( maxRootPgno!=((Pgno)((sqlite3PendingByte/((pBt)->pageSize))+1)) );

    rc = sqlite3BtreeUpdateMeta(p, 4, maxRootPgno);
  }else{
    freePage(pPage, &rc);
    releasePage(pPage);
  }

  return rc;
}
int sqlite3BtreeDropTable(Btree *p, int iTable, int *piMoved){
  int rc;
  sqlite3BtreeEnter(p);
  rc = btreeDropTable(p, iTable, piMoved);
  sqlite3BtreeLeave(p);
  return rc;
}
# 9387 "src/btree.c"
void sqlite3BtreeGetMeta(Btree *p, int idx, u32 *pMeta){
  BtShared *pBt = p->pBt;

  sqlite3BtreeEnter(p);
  assert( p->inTrans>0 );
  assert( 0==querySharedCacheTableLock(p, 1, 1) );
  assert( pBt->pPage1 );
  assert( idx>=0 && idx<=15 );

  if( idx==15 ){
    *pMeta = sqlite3PagerDataVersion(pBt->pPager) + p->iDataVersion;
  }else{
    *pMeta = sqlite3Get4byte(&pBt->pPage1->aData[36 + idx*4]);
  }
# 9410 "src/btree.c"
  sqlite3BtreeLeave(p);
}


int sqlite3BtreeUpdateMeta(Btree *p, int idx, u32 iMeta){
  BtShared *pBt = p->pBt;
  unsigned char *pP1;
  int rc;
  assert( idx>=1 && idx<=15 );
  sqlite3BtreeEnter(p);
  assert( p->inTrans==2 );
  assert( pBt->pPage1!=0 );
  pP1 = pBt->pPage1->aData;
  rc = sqlite3PagerWrite(pBt->pPage1->pDbPage);
  if( rc==0 ){
    sqlite3Put4byte(&pP1[36 + idx*4], iMeta);

    if( idx==7 ){
      assert( pBt->autoVacuum || iMeta==0 );
      assert( iMeta==0 || iMeta==1 );
      pBt->incrVacuum = (u8)iMeta;
    }

  }
  sqlite3BtreeLeave(p);
  return rc;
}
# 9450 "src/btree.c"
int sqlite3BtreeCount(BtCursor *pCur, i64 *pnEntry){
  i64 nEntry = 0;
  int rc;

  rc = moveToRoot(pCur);
  if( rc==16 ){
    *pnEntry = 0;
    return 0;
  }


  while( rc==0 ){
    int iIdx;
    MemPage *pPage;


    pPage = pCur->pPage;
    if( pPage->leaf || !pPage->intKey ){
      nEntry += pPage->nCell;
    }
# 9486 "src/btree.c"
    if( pPage->leaf ){
      do {
        if( pCur->iPage==0 ){

          *pnEntry = nEntry;
          return moveToRoot(pCur);
        }
        moveToParent(pCur);
      }while ( pCur->ix>=pCur->pPage->nCell );

      pCur->ix++;
      pPage = pCur->pPage;
    }


    iIdx = pCur->ix;
    if( iIdx==pPage->nCell ){
      rc = moveToChild(pCur, sqlite3Get4byte(&pPage->aData[pPage->hdrOffset+8]));
    }else{
      rc = moveToChild(pCur, sqlite3Get4byte(((pPage)->aData + ((pPage)->maskPage & __builtin_bswap16(*(u16*)(&(pPage)->aCellIdx[2*(iIdx)]))))));
    }
  }


  return rc;
}


Pager *sqlite3BtreePager(Btree *p){
  return p->pBt->pPager;
}


static void checkAppendMsg(
  IntegrityCk *pCheck,
  const char *zFormat,
  ...
){
  va_list ap;
  if( !pCheck->mxErr ) return;
  pCheck->mxErr--;
  pCheck->nErr++;
  __builtin_va_start((ap));
  if( pCheck->errMsg.nChar ){
    sqlite3_str_append(&pCheck->errMsg, "\n", 1);
  }
  if( pCheck->zPfx ){
    sqlite3_str_appendf(&pCheck->errMsg, pCheck->zPfx, pCheck->v1, pCheck->v2);
  }
  sqlite3_str_vappendf(&pCheck->errMsg, zFormat, ap);
  ;
  if( pCheck->errMsg.accError==7 ){
    pCheck->mallocFailed = 1;
  }
}
# 9558 "src/btree.c"
static int getPageReferenced(IntegrityCk *pCheck, Pgno iPg){
  assert( iPg<=pCheck->nPage && sizeof(pCheck->aPgRef[0])==1 );
  return (pCheck->aPgRef[iPg/8] & (1 << (iPg & 0x07)));
}


static void setPageReferenced(IntegrityCk *pCheck, Pgno iPg){
  assert( iPg<=pCheck->nPage && sizeof(pCheck->aPgRef[0])==1 );
  pCheck->aPgRef[iPg/8] |= (1 << (iPg & 0x07));
}
# 9580 "src/btree.c"
static int checkRef(IntegrityCk *pCheck, Pgno iPage){
  if( iPage>pCheck->nPage || iPage==0 ){
    checkAppendMsg(pCheck, "invalid page number %d", iPage);
    return 1;
  }
  if( getPageReferenced(pCheck, iPage) ){
    checkAppendMsg(pCheck, "2nd reference to page %d", iPage);
    return 1;
  }
  setPageReferenced(pCheck, iPage);
  return 0;
}


static void checkPtrmap(
  IntegrityCk *pCheck,
  Pgno iChild,
  u8 eType,
  Pgno iParent
){
  int rc;
  u8 ePtrmapType;
  Pgno iPtrmapParent;

  rc = ptrmapGet(pCheck->pBt, iChild, &ePtrmapType, &iPtrmapParent);
  if( rc!=0 ){
    if( rc==7 || rc==(10 | (12<<8)) ) pCheck->mallocFailed = 1;
    checkAppendMsg(pCheck, "Failed to read ptrmap key=%d", iChild);
    return;
  }

  if( ePtrmapType!=eType || iPtrmapParent!=iParent ){
    checkAppendMsg(pCheck,
      "Bad ptr map entry key=%d expected=(%d,%d) got=(%d,%d)",
      iChild, eType, iParent, ePtrmapType, iPtrmapParent);
  }
}


static void checkList(
  IntegrityCk *pCheck,
  int isFreeList,
  int iPage,
  u32 N
){
  int i;
  u32 expected = N;
  int nErrAtStart = pCheck->nErr;
  while( iPage!=0 && pCheck->mxErr ){
    DbPage *pOvflPage;
    unsigned char *pOvflData;
    if( checkRef(pCheck, iPage) ) break;
    N--;
    if( sqlite3PagerGet(pCheck->pPager, (Pgno)iPage, &pOvflPage, 0) ){
      checkAppendMsg(pCheck, "failed to get page %d", iPage);
      break;
    }
    pOvflData = (unsigned char *)sqlite3PagerGetData(pOvflPage);
    if( isFreeList ){
      u32 n = (u32)sqlite3Get4byte(&pOvflData[4]);

      if( pCheck->pBt->autoVacuum ){
        checkPtrmap(pCheck, iPage, 2, 0);
      }

      if( n>pCheck->pBt->usableSize/4-2 ){
        checkAppendMsg(pCheck,
           "freelist leaf count too big on page %d", iPage);
        N--;
      }else{
        for(i=0; i<(int)n; i++){
          Pgno iFreePage = sqlite3Get4byte(&pOvflData[8+i*4]);

          if( pCheck->pBt->autoVacuum ){
            checkPtrmap(pCheck, iFreePage, 2, 0);
          }

          checkRef(pCheck, iFreePage);
        }
        N -= n;
      }
    }

    else{


      if( pCheck->pBt->autoVacuum && N>0 ){
        i = sqlite3Get4byte(pOvflData);
        checkPtrmap(pCheck, i, 4, iPage);
      }
    }

    iPage = sqlite3Get4byte(pOvflData);
    sqlite3PagerUnref(pOvflPage);
  }
  if( N && nErrAtStart==pCheck->nErr ){
    checkAppendMsg(pCheck,
      "%s is %d but should be %d",
      isFreeList ? "size" : "overflow list length",
      expected-N, expected);
  }
}
# 9717 "src/btree.c"
static void btreeHeapInsert(u32 *aHeap, u32 x){
  u32 j, i = ++aHeap[0];
  aHeap[i] = x;
  while( (j = i/2)>0 && aHeap[j]>aHeap[i] ){
    x = aHeap[j];
    aHeap[j] = aHeap[i];
    aHeap[i] = x;
    i = j;
  }
}
static int btreeHeapPull(u32 *aHeap, u32 *pOut){
  u32 j, i, x;
  if( (x = aHeap[0])==0 ) return 0;
  *pOut = aHeap[1];
  aHeap[1] = aHeap[x];
  aHeap[x] = 0xffffffff;
  aHeap[0]--;
  i = 1;
  while( (j = i*2)<=aHeap[0] ){
    if( aHeap[j]>aHeap[j+1] ) j++;
    if( aHeap[i]<aHeap[j] ) break;
    x = aHeap[i];
    aHeap[i] = aHeap[j];
    aHeap[j] = x;
    i = j;
  }
  return 1;
}
# 9761 "src/btree.c"
static int checkTreePage(
  IntegrityCk *pCheck,
  int iPage,
  i64 *piMinKey,
  i64 maxKey
){
  MemPage *pPage = 0;
  int i;
  int rc;
  int depth = -1, d2;
  int pgno;
  int nFrag;
  int hdr;
  int cellStart;
  int nCell;
  int doCoverageCheck = 1;
  int keyCanBeEqual = 1;

  u8 *data;
  u8 *pCell;
  u8 *pCellIdx;
  BtShared *pBt;
  u32 pc;
  u32 usableSize;
  u32 contentOffset;
  u32 *heap = 0;
  u32 x, prev = 0;
  const char *saved_zPfx = pCheck->zPfx;
  int saved_v1 = pCheck->v1;
  int saved_v2 = pCheck->v2;
  u8 savedIsInit = 0;


  pBt = pCheck->pBt;
  usableSize = pBt->usableSize;
  if( iPage==0 ) return 0;
  if( checkRef(pCheck, iPage) ) return 0;
  pCheck->zPfx = "Page %d: ";
  pCheck->v1 = iPage;
  if( (rc = btreeGetPage(pBt, (Pgno)iPage, &pPage, 0))!=0 ){
    checkAppendMsg(pCheck,
       "unable to get the page. error code=%d", rc);
    goto end_of_check;
  }


  savedIsInit = pPage->isInit;
  pPage->isInit = 0;
  if( (rc = btreeInitPage(pPage))!=0 ){
    assert( rc==11 );
    checkAppendMsg(pCheck,
                   "btreeInitPage() returns error code %d", rc);
    goto end_of_check;
  }
  if( (rc = btreeComputeFreeSpace(pPage))!=0 ){
    assert( rc==11 );
    checkAppendMsg(pCheck, "free space corruption", rc);
    goto end_of_check;
  }
  data = pPage->aData;
  hdr = pPage->hdrOffset;


  pCheck->zPfx = "On tree page %d cell %d: ";
  contentOffset = (((((int)((&data[hdr+5])[0]<<8 | (&data[hdr+5])[1]))-1)&0xffff)+1);
  assert( contentOffset<=usableSize );


  nCell = ((&data[hdr+3])[0]<<8 | (&data[hdr+3])[1]);
  assert( pPage->nCell==nCell );


  cellStart = hdr + 12 - 4*pPage->leaf;
  assert( pPage->aCellIdx==&data[cellStart] );
  pCellIdx = &data[cellStart + 2*(nCell-1)];

  if( !pPage->leaf ){

    pgno = sqlite3Get4byte(&data[hdr+8]);

    if( pBt->autoVacuum ){
      pCheck->zPfx = "On page %d at right child: ";
      checkPtrmap(pCheck, pgno, 5, iPage);
    }

    depth = checkTreePage(pCheck, pgno, &maxKey, maxKey);
    keyCanBeEqual = 0;
  }else{


    heap = pCheck->heap;
    heap[0] = 0;
  }


  for(i=nCell-1; i>=0 && pCheck->mxErr; i--){
    CellInfo info;


    pCheck->v2 = i;
    assert( pCellIdx==&data[cellStart + i*2] );
    pc = __builtin_bswap16(*(u16*)(pCellIdx));
    pCellIdx -= 2;
    if( pc<contentOffset || pc>usableSize-4 ){
      checkAppendMsg(pCheck, "Offset %d out of range %d..%d",
                             pc, contentOffset, usableSize-4);
      doCoverageCheck = 0;
      continue;
    }
    pCell = &data[pc];
    pPage->xParseCell(pPage, pCell, &info);
    if( pc+info.nSize>usableSize ){
      checkAppendMsg(pCheck, "Extends off end of page");
      doCoverageCheck = 0;
      continue;
    }


    if( pPage->intKey ){
      if( keyCanBeEqual ? (info.nKey > maxKey) : (info.nKey >= maxKey) ){
        checkAppendMsg(pCheck, "Rowid %lld out of order", info.nKey);
      }
      maxKey = info.nKey;
      keyCanBeEqual = 0;
    }


    if( info.nPayload>info.nLocal ){
      u32 nPage;
      Pgno pgnoOvfl;
      assert( pc + info.nSize - 4 <= usableSize );
      nPage = (info.nPayload - info.nLocal + usableSize - 5)/(usableSize - 4);
      pgnoOvfl = sqlite3Get4byte(&pCell[info.nSize - 4]);

      if( pBt->autoVacuum ){
        checkPtrmap(pCheck, pgnoOvfl, 3, iPage);
      }

      checkList(pCheck, 0, pgnoOvfl, nPage);
    }

    if( !pPage->leaf ){

      pgno = sqlite3Get4byte(pCell);

      if( pBt->autoVacuum ){
        checkPtrmap(pCheck, pgno, 5, iPage);
      }

      d2 = checkTreePage(pCheck, pgno, &maxKey, maxKey);
      keyCanBeEqual = 0;
      if( d2!=depth ){
        checkAppendMsg(pCheck, "Child page depth differs");
        depth = d2;
      }
    }else{

      btreeHeapInsert(heap, (pc<<16)|(pc+info.nSize-1));
    }
  }
  *piMinKey = maxKey;


  pCheck->zPfx = 0;
  if( doCoverageCheck && pCheck->mxErr>0 ){


    if( !pPage->leaf ){
      heap = pCheck->heap;
      heap[0] = 0;
      for(i=nCell-1; i>=0; i--){
        u32 size;
        pc = __builtin_bswap16(*(u16*)(&data[cellStart+i*2]));
        size = pPage->xCellSize(pPage, &data[pc]);
        btreeHeapInsert(heap, (pc<<16)|(pc+size-1));
      }
    }


    i = ((&data[hdr+1])[0]<<8 | (&data[hdr+1])[1]);
    while( i>0 ){
      int size, j;
      assert( (u32)i<=usableSize-4 );
      size = ((&data[i+2])[0]<<8 | (&data[i+2])[1]);
      assert( (u32)(i+size)<=usableSize );
      btreeHeapInsert(heap, (((u32)i)<<16)|(i+size-1));


      j = ((&data[i])[0]<<8 | (&data[i])[1]);


      assert( j==0 || j>i+size );
      assert( (u32)j<=usableSize-4 );
      i = j;
    }
# 9982 "src/btree.c"
    nFrag = 0;
    prev = contentOffset - 1;
    while( btreeHeapPull(heap,&x) ){
      if( (prev&0xffff)>=(x>>16) ){
        checkAppendMsg(pCheck,
          "Multiple uses for byte %u of page %d", x>>16, iPage);
        break;
      }else{
        nFrag += (x>>16) - (prev&0xffff) - 1;
        prev = x;
      }
    }
    nFrag += usableSize - (prev&0xffff) - 1;


    if( heap[0]==0 && nFrag!=data[hdr+7] ){
      checkAppendMsg(pCheck,
          "Fragmentation of %d bytes reported as %d on page %d",
          nFrag, data[hdr+7], iPage);
    }
  }

end_of_check:
  if( !doCoverageCheck ) pPage->isInit = savedIsInit;
  releasePage(pPage);
  pCheck->zPfx = saved_zPfx;
  pCheck->v1 = saved_v1;
  pCheck->v2 = saved_v2;
  return depth+1;
}
# 10031 "src/btree.c"
char *sqlite3BtreeIntegrityCheck(
  Btree *p,
  int *aRoot,
  int nRoot,
  int mxErr,
  int *pnErr
){
  Pgno i;
  IntegrityCk sCheck;
  BtShared *pBt = p->pBt;
  u64 savedDbFlags = pBt->db->flags;
  char zErr[100];
  ;

  sqlite3BtreeEnter(p);
  assert( p->inTrans>0 && pBt->inTransaction>0 );
  ;
  assert( nRef>=0 );
  sCheck.pBt = pBt;
  sCheck.pPager = pBt->pPager;
  sCheck.nPage = btreePagecount(sCheck.pBt);
  sCheck.mxErr = mxErr;
  sCheck.nErr = 0;
  sCheck.mallocFailed = 0;
  sCheck.zPfx = 0;
  sCheck.v1 = 0;
  sCheck.v2 = 0;
  sCheck.aPgRef = 0;
  sCheck.heap = 0;
  sqlite3StrAccumInit(&sCheck.errMsg, 0, zErr, sizeof(zErr), 1000000000);
  sCheck.errMsg.printfFlags = 0x01;
  if( sCheck.nPage==0 ){
    goto integrity_ck_cleanup;
  }

  sCheck.aPgRef = sqlite3MallocZero((sCheck.nPage / 8)+ 1);
  if( !sCheck.aPgRef ){
    sCheck.mallocFailed = 1;
    goto integrity_ck_cleanup;
  }
  sCheck.heap = (u32*)sqlite3PageMalloc( pBt->pageSize );
  if( sCheck.heap==0 ){
    sCheck.mallocFailed = 1;
    goto integrity_ck_cleanup;
  }

  i = ((Pgno)((sqlite3PendingByte/((pBt)->pageSize))+1));
  if( i<=sCheck.nPage ) setPageReferenced(&sCheck, i);


  sCheck.zPfx = "Main freelist: ";
  checkList(&sCheck, 1, sqlite3Get4byte(&pBt->pPage1->aData[32]),
            sqlite3Get4byte(&pBt->pPage1->aData[36]));
  sCheck.zPfx = 0;


  if( pBt->autoVacuum ){
    int mx = 0;
    int mxInHdr;
    for(i=0; (int)i<nRoot; i++) if( mx<aRoot[i] ) mx = aRoot[i];
    mxInHdr = sqlite3Get4byte(&pBt->pPage1->aData[52]);
    if( mx!=mxInHdr ){
      checkAppendMsg(&sCheck,
        "max rootpage (%d) disagrees with header (%d)",
        mx, mxInHdr
      );
    }
  }else if( sqlite3Get4byte(&pBt->pPage1->aData[64])!=0 ){
    checkAppendMsg(&sCheck,
      "incremental_vacuum enabled with a max rootpage of zero"
    );
  }

  ;
  pBt->db->flags &= ~(u64)0x00200000;
  for(i=0; (int)i<nRoot && sCheck.mxErr; i++){
    i64 notUsed;
    if( aRoot[i]==0 ) continue;

    if( pBt->autoVacuum && aRoot[i]>1 ){
      checkPtrmap(&sCheck, aRoot[i], 1, 0);
    }

    checkTreePage(&sCheck, aRoot[i], &notUsed, (0xffffffff|(((i64)0x7fffffff)<<32)));
  }
  pBt->db->flags = savedDbFlags;


  for(i=1; i<=sCheck.nPage && sCheck.mxErr; i++){
# 10132 "src/btree.c"
    if( getPageReferenced(&sCheck, i)==0 &&
       (ptrmapPageno(pBt, i)!=i || !pBt->autoVacuum) ){
      checkAppendMsg(&sCheck, "Page %d is never used", i);
    }
    if( getPageReferenced(&sCheck, i)!=0 &&
       (ptrmapPageno(pBt, i)==i && pBt->autoVacuum) ){
      checkAppendMsg(&sCheck, "Pointer map page %d is referenced", i);
    }

  }


integrity_ck_cleanup:
  sqlite3PageFree(sCheck.heap);
  sqlite3_free(sCheck.aPgRef);
  if( sCheck.mallocFailed ){
    sqlite3_str_reset(&sCheck.errMsg);
    sCheck.nErr++;
  }
  *pnErr = sCheck.nErr;
  if( sCheck.nErr==0 ) sqlite3_str_reset(&sCheck.errMsg);

  assert( nRef==sqlite3PagerRefcount(pBt->pPager) );
  sqlite3BtreeLeave(p);
  return sqlite3StrAccumFinish(&sCheck.errMsg);
}
# 10168 "src/btree.c"
const char *sqlite3BtreeGetFilename(Btree *p){
  assert( p->pBt->pPager!=0 );
  return sqlite3PagerFilename(p->pBt->pPager, 1);
}
# 10181 "src/btree.c"
const char *sqlite3BtreeGetJournalname(Btree *p){
  assert( p->pBt->pPager!=0 );
  return sqlite3PagerJournalname(p->pBt->pPager);
}


int sqlite3BtreeIsInTrans(Btree *p){
  assert( p==0 || sqlite3_mutex_held(p->db->mutex) );
  return (p && (p->inTrans==2));
}
# 10203 "src/btree.c"
int sqlite3BtreeCheckpoint(Btree *p, int eMode, int *pnLog, int *pnCkpt){
  int rc = 0;
  if( p ){
    BtShared *pBt = p->pBt;
    sqlite3BtreeEnter(p);
    if( pBt->inTransaction!=0 ){
      rc = 6;
    }else{
      rc = sqlite3PagerCheckpoint(pBt->pPager, p->db, eMode, pnLog, pnCkpt);
    }
    sqlite3BtreeLeave(p);
  }
  return rc;
}


int sqlite3BtreeIsInReadTrans(Btree *p){
  assert( p );
  assert( sqlite3_mutex_held(p->db->mutex) );
  return p->inTrans!=0;
}

int sqlite3BtreeIsInBackup(Btree *p){
  assert( p );
  assert( sqlite3_mutex_held(p->db->mutex) );
  return p->nBackup!=0;
}
# 10254 "src/btree.c"
void *sqlite3BtreeSchema(Btree *p, int nBytes, void(*xFree)(void *)){
  BtShared *pBt = p->pBt;
  sqlite3BtreeEnter(p);
  if( !pBt->pSchema && nBytes ){
    pBt->pSchema = sqlite3DbMallocZero(0, nBytes);
    pBt->xFreeSchema = xFree;
  }
  sqlite3BtreeLeave(p);
  return pBt->pSchema;
}


int sqlite3BtreeSchemaLocked(Btree *p){
  int rc;
  assert( sqlite3_mutex_held(p->db->mutex) );
  sqlite3BtreeEnter(p);
  rc = querySharedCacheTableLock(p, 1, 1);
  assert( rc==0 || rc==(6 | (1<<8)) );
  sqlite3BtreeLeave(p);
  return rc;
}
# 10287 "src/btree.c"
int sqlite3BtreeLockTable(Btree *p, int iTab, u8 isWriteLock){
  int rc = 0;
  assert( p->inTrans!=0 );
  if( p->sharable ){
    u8 lockType = 1 + isWriteLock;
    assert( 1 +1==2 );
    assert( isWriteLock==0 || isWriteLock==1 );

    sqlite3BtreeEnter(p);
    rc = querySharedCacheTableLock(p, iTab, lockType);
    if( rc==0 ){
      rc = setSharedCacheTableLock(p, iTab, lockType);
    }
    sqlite3BtreeLeave(p);
  }
  return rc;
}
# 10317 "src/btree.c"
int sqlite3BtreePutData(BtCursor *pCsr, u32 offset, u32 amt, void *z){
  int rc;
  assert( cursorOwnsBtShared(pCsr) );
  assert( sqlite3_mutex_held(pCsr->pBtree->db->mutex) );
  assert( pCsr->curFlags & 0x10 );

  rc = (pCsr->eState>=3 ? btreeRestoreCursorPosition(pCsr) : 0);
  if( rc!=0 ){
    return rc;
  }
  assert( pCsr->eState!=3 );
  if( pCsr->eState!=0 ){
    return 4;
  }
# 10340 "src/btree.c"
  saveAllCursors(pCsr->pBt, pCsr->pgnoRoot, pCsr);
  assert( rc==0 );
# 10350 "src/btree.c"
  if( (pCsr->curFlags & 0x01)==0 ){
    return 8;
  }
  assert( (pCsr->pBt->btsFlags & 0x0001)==0
              && pCsr->pBt->inTransaction==2 );
  assert( hasSharedCacheTableLock(pCsr->pBtree, pCsr->pgnoRoot, 0, 2) );
  assert( !hasReadConflicts(pCsr->pBtree, pCsr->pgnoRoot) );
  assert( pCsr->pPage->intKey );

  return accessPayload(pCsr, offset, amt, (unsigned char *)z, 1);
}


void sqlite3BtreeIncrblobCursor(BtCursor *pCur){
  pCur->curFlags |= 0x10;
  pCur->pBtree->hasIncrblobCur = 1;
}


int sqlite3BtreeSetVersion(Btree *pBtree, int iVersion){
  BtShared *pBt = pBtree->pBt;
  int rc;

  assert( iVersion==1 || iVersion==2 );


  pBt->btsFlags &= ~0x0020;
  if( iVersion==1 ) pBt->btsFlags |= 0x0020;

  rc = sqlite3BtreeBeginTrans(pBtree, 0, 0);
  if( rc==0 ){
    u8 *aData = pBt->pPage1->aData;
    if( aData[18]!=(u8)iVersion || aData[19]!=(u8)iVersion ){
      rc = sqlite3BtreeBeginTrans(pBtree, 2, 0);
      if( rc==0 ){
        rc = sqlite3PagerWrite(pBt->pPage1->pDbPage);
        if( rc==0 ){
          aData[18] = (u8)iVersion;
          aData[19] = (u8)iVersion;
        }
      }
    }
  }

  pBt->btsFlags &= ~0x0020;
  return rc;
}


int sqlite3BtreeCursorHasHint(BtCursor *pCsr, unsigned int mask){
  return (pCsr->hints & mask)!=0;
}


int sqlite3BtreeIsReadonly(Btree *p){
  return (p->pBt->btsFlags & 0x0001)!=0;
}


int sqlite3HeaderSizeBtree(void){ return (((sizeof(MemPage))+7)&~7); }


int sqlite3BtreeSharable(Btree *p){
  return p->sharable;
}


int sqlite3BtreeConnectionCount(Btree *p){
  ;
  return p->pBt->nRef;
}