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[UBSan] [min-rt] make minimal runtime handlers weak (#154220)

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This allows people to override them, if they want.
This commit is contained in:
Florian Mayer 2025-08-18 16:19:31 -07:00 committed by GitHub
parent 2c79dc1082
commit 19474672e5
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GPG Key ID: B5690EEEBB952194
1 changed files with 6 additions and 7 deletions
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13
compiler-rt/lib/ubsan_minimal/ubsan_minimal_handlers.cpp
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@ -125,15 +125,13 @@ void NORETURN CheckFailed(const char *file, int, const char *cond, u64, u64) {
} // namespace __sanitizer
#endif
#define INTERFACE extern "C" __attribute__((visibility("default")))
#define HANDLER_RECOVER(name, kind) \
INTERFACE void __ubsan_handle_##name##_minimal() { \
SANITIZER_INTERFACE_WEAK_DEF(void, __ubsan_handle_##name##_minimal) { \
__ubsan_report_error(kind, GET_CALLER_PC(), nullptr); \
}
#define HANDLER_NORECOVER(name, kind) \
INTERFACE void __ubsan_handle_##name##_minimal_abort() { \
SANITIZER_INTERFACE_WEAK_DEF(void, __ubsan_handle_##name##_minimal_abort) { \
uintptr_t caller = GET_CALLER_PC(); \
__ubsan_report_error_fatal(kind, caller, nullptr); \
abort_with_message(kind, caller, nullptr); \
@ -144,13 +142,14 @@ void NORETURN CheckFailed(const char *file, int, const char *cond, u64, u64) {
HANDLER_NORECOVER(name, kind)
#define HANDLER_RECOVER_PTR(name, kind) \
INTERFACE void __ubsan_handle_##name##_minimal(const uintptr_t address) { \
SANITIZER_INTERFACE_WEAK_DEF(void, __ubsan_handle_##name##_minimal, \
const uintptr_t address) { \
__ubsan_report_error(kind, GET_CALLER_PC(), &address); \
}
#define HANDLER_NORECOVER_PTR(name, kind) \
INTERFACE void __ubsan_handle_##name##_minimal_abort( \
const uintptr_t address) { \
SANITIZER_INTERFACE_WEAK_DEF(void, __ubsan_handle_##name##_minimal_abort, \
const uintptr_t address) { \
uintptr_t caller = GET_CALLER_PC(); \
__ubsan_report_error_fatal(kind, caller, &address); \
abort_with_message(kind, caller, &address); \