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BLI_memarena: use ASAN memory poison 

Detects invalid memory use when WITH_COMPILER_ASAN is enabled.
This commit is contained in:
Campbell Barton 2019-03-02 11:41:55 +11:00
parent 4d9bf4fc6c
commit b5d87f8028
Notes: blender-bot 2023-02-14 08:06:38 +01:00 
Referenced by issue #61854, Blender 2.80 Grease Pencil surface offset by viewport distance instead of geometry surface
Referenced by issue #60171, Hair Particles Not Displaying in Viewport
1 changed files with 16 additions and 0 deletions
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16
source/blender/blenlib/intern/BLI_memarena.c
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@ -47,6 +47,17 @@
# define VALGRIND_MEMPOOL_ALLOC(pool, addr, size) UNUSED_VARS(pool, addr, size)
#endif
/* Clang defines this. */
#ifndef __has_feature
# define __has_feature(x) 0
#endif
#if defined(__SANITIZE_ADDRESS__) || __has_feature(address_sanitizer)
# include "sanitizer/asan_interface.h"
#else
# define ASAN_POISON_MEMORY_REGION(addr, size) ((void)(addr), (void)(size))
# define ASAN_UNPOISON_MEMORY_REGION(addr, size) ((void)(addr), (void)(size))
#endif
struct MemBuf {
struct MemBuf *next;
uchar data[0];
@ -143,6 +154,8 @@ void *BLI_memarena_alloc(MemArena *ma, size_t size)
mb->next = ma->bufs;
ma->bufs = mb;
ASAN_POISON_MEMORY_REGION(ma->curbuf, ma->cursize);
memarena_curbuf_align(ma);
}
@ -152,6 +165,8 @@ void *BLI_memarena_alloc(MemArena *ma, size_t size)
VALGRIND_MEMPOOL_ALLOC(ma, ptr, size);
ASAN_UNPOISON_MEMORY_REGION(ptr, size);
return ptr;
}
@ -194,6 +209,7 @@ void BLI_memarena_clear(MemArena *ma)
if (ma->use_calloc) {
memset(ma->curbuf, 0, curbuf_used);
}
ASAN_POISON_MEMORY_REGION(ma->curbuf, ma->cursize);
}
VALGRIND_DESTROY_MEMPOOL(ma);