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Add alloc_size and alloc_align attributes

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This should help a bit the compiler to emit better diagnostics and to improve
the correctness of `__builtin_object_size`.

See https://clang.llvm.org/docs/AttributeReference.html#alloc-size
and https://clang.llvm.org/docs/AttributeReference.html#alloc-align
This commit is contained in:
jvoisin 2022-01-03 17:14:55 +01:00 • committed by Daniel Micay
parent 36dfed3354
commit 78cbb964d4
1 changed files with 7 additions and 3 deletions
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10
include/h_malloc.h
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@ -48,9 +48,11 @@ extern "C" {
#endif #endif
// C standard // C standard
void *h_malloc(size_t size); __attribute__((alloc_size(1))) void *h_malloc(size_t size);
void *h_calloc(size_t nmemb, size_t size); __attribute__((alloc_size(1, 2))) void *h_calloc(size_t nmemb, size_t size);
void *h_realloc(void *ptr, size_t size); __attribute__((alloc_size(2))) void *h_realloc(void *ptr, size_t size);
__attribute__((alloc_align(1)))
__attribute__((alloc_size(2)))
void *h_aligned_alloc(size_t alignment, size_t size); void *h_aligned_alloc(size_t alignment, size_t size);
void h_free(void *ptr); void h_free(void *ptr);
@ -76,6 +78,8 @@ int h_malloc_info(int options, FILE *fp);
#endif #endif
// obsolete glibc extensions // obsolete glibc extensions
__attribute__((alloc_align(1)))
__attribute__((alloc_size(2)))
void *h_memalign(size_t alignment, size_t size); void *h_memalign(size_t alignment, size_t size);
#ifndef __ANDROID__ #ifndef __ANDROID__
void *h_valloc(size_t size); void *h_valloc(size_t size);