| // Verifies that AddressSanitizer symbols show up as expected in LLVM IR with `-Zsanitizer`. |
| // This is a regression test for https://github.com/rust-lang/rust/issues/113404 |
| // |
| // Notes about the `compile-flags` below: |
| // |
| // * The original issue only reproed with LTO - this is why this angle has |
| // extra test coverage via different `revisions` |
| // * To observe the failure/repro at LLVM-IR level we need to use `staticlib` |
| // which necessitates `-C prefer-dynamic=false` - without the latter flag, |
| // we would have run into "cannot prefer dynamic linking when performing LTO". |
| // |
| // The test is restricted to `only-linux`, because the sanitizer-related instrumentation is target |
| // specific. In particular, `___asan_globals_registered` is only used in the |
| // `InstrumentGlobalsELF` and `InstrumentGlobalsMachO` code paths. The `only-linux` filter is |
| // narrower than really needed (i.e. narrower than ELF-or-MachO), but this seems ok - having a |
| // linux-only regression test should be sufficient here. |
| // |
| //@ needs-sanitizer-address |
| //@ only-linux |
| // |
| //@ revisions:ASAN ASAN-FAT-LTO |
| //@ compile-flags: -Zsanitizer=address -Ctarget-feature=-crt-static |
| //@[ASAN] compile-flags: |
| //@[ASAN-FAT-LTO] compile-flags: -Cprefer-dynamic=false -Clto=fat |
| |
| #![crate_type = "staticlib"] |
| |
| // The test below mimics `CACHED_POW10` from `library/core/src/num/flt2dec/strategy/grisu.rs` which |
| // (because of incorrect handling of `___asan_globals_registered` during LTO) was incorrectly |
| // reported as an ODR violation in https://crbug.com/1459233#c1. Before this bug was fixed, |
| // `___asan_globals_registered` would show up as `internal global i64` rather than `common hidden |
| // global i64`. (The test expectations ignore the exact type because on `arm-android` the type |
| // is `i32` rather than `i64`.) |
| // |
| // CHECK: @___asan_globals_registered = common hidden global |
| // CHECK: @__start_asan_globals = extern_weak hidden global |
| // CHECK: @__stop_asan_globals = extern_weak hidden global |
| #[no_mangle] |
| pub static CACHED_POW10: [(u64, i16, i16); 4] = [ |
| (0xe61acf033d1a45df, -1087, -308), |
| (0xab70fe17c79ac6ca, -1060, -300), |
| (0xff77b1fcbebcdc4f, -1034, -292), |
| (0xbe5691ef416bd60c, -1007, -284), |
| ]; |
