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Provide default implementations for sanitizer interface functions 

Summary:
Adds a few default implementations for weak
interface functions on platforms where weak hooks are not supported.

Reviewers: eugenis, samsonov, timurrrr

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D28201

llvm-svn: 291313
This commit is contained in:
Francis Ricci 2017-01-07 00:31:20 +00:00
parent 913e1127eb
commit 9a2a9922ca
2 changed files with 18 additions and 0 deletions
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13
compiler-rt/lib/lsan/lsan_allocator.cc
View File

@ -258,4 +258,17 @@ SANITIZER_INTERFACE_ATTRIBUTE
uptr __sanitizer_get_allocated_size(const void *p) {
return GetMallocUsableSize(p);
}
#if !SANITIZER_SUPPORTS_WEAK_HOOKS
// Provide default (no-op) implementation of malloc hooks.
SANITIZER_INTERFACE_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE
void __sanitizer_malloc_hook(void *ptr, uptr size) {
(void)ptr;
(void)size;
}
SANITIZER_INTERFACE_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE
void __sanitizer_free_hook(void *ptr) {
(void)ptr;
}
#endif
} // extern "C"

5
compiler-rt/lib/lsan/lsan_common.cc
View File

@ -758,5 +758,10 @@ SANITIZER_INTERFACE_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE
int __lsan_is_turned_off() {
return 0;
}
SANITIZER_INTERFACE_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE
const char *__lsan_default_suppressions() {
return "";
}
#endif
} // extern "C"