diff options
Diffstat (limited to 'Include')
| -rw-r--r-- | Include/pymem.h | 13 |
1 files changed, 4 insertions, 9 deletions
diff --git a/Include/pymem.h b/Include/pymem.h index 6b1105c..f8aef29 100644 --- a/Include/pymem.h +++ b/Include/pymem.h @@ -62,16 +62,11 @@ PyAPI_FUNC(void) PyMem_Free(void *); #else /* ! PYMALLOC_DEBUG */ -#ifdef MALLOC_ZERO_RETURNS_NULL +/* PyMem_MALLOC(0) means malloc(1). Some systems would return NULL + for malloc(0), which would be treated as an error. Some platforms + would return a pointer with no memory behind it, which would break + pymalloc. To solve these problems, allocate an extra byte. */ #define PyMem_MALLOC(n) malloc((n) ? (n) : 1) -#else -#define PyMem_MALLOC malloc -#endif - -/* Caution: whether MALLOC_ZERO_RETURNS_NULL is #defined has nothing to - do with whether platform realloc(non-NULL, 0) normally frees the memory - or returns NULL. Rather than introduce yet another config variation, - just make a realloc to 0 bytes act as if to 1 instead. */ #define PyMem_REALLOC(p, n) realloc((p), (n) ? (n) : 1) #endif /* PYMALLOC_DEBUG */ |