| // RUN: %clangxx_cfi_dso -DSHARED_LIB %s -fPIC -shared -o %t-so.so |
| // RUN: %clangxx_cfi_dso %s -o %t %t-so.so && %expect_crash %t 2>&1 | FileCheck %s |
| |
| // RUN: %clangxx_cfi_dso_diag -g -DSHARED_LIB %s -fPIC -shared -o %t2-so.so |
| // RUN: %clangxx_cfi_dso_diag -g %s -o %t2 %t2-so.so && %t2 2>&1 | FileCheck %s --check-prefix=CFI-DIAG |
| |
| #include <stdio.h> |
| |
| #ifdef SHARED_LIB |
| void g(); |
| void f() { |
| // CHECK-DIAG: =1= |
| // CHECK: =1= |
| fprintf(stderr, "=1=\n"); |
| ((void (*)(void))g)(); |
| // CHECK-DIAG: =2= |
| // CHECK: =2= |
| fprintf(stderr, "=2=\n"); |
| // CFI-DIAG: runtime error: control flow integrity check for type 'void (int)' failed during indirect function call |
| // CFI-DIAG-NEXT: note: g() defined here |
| ((void (*)(int))g)(42); // UB here |
| // CHECK-DIAG: =3= |
| // CHECK-NOT: =3= |
| fprintf(stderr, "=3=\n"); |
| } |
| #else |
| void f(); |
| void g() { |
| } |
| |
| int main() { |
| f(); |
| } |
| #endif |
