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?alloc: do not return NULL when asked for zero bytes

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Signed-off-by: Junio C Hamano <junkio@cox.net>
This commit is contained in:
Junio C Hamano 2005-12-29 01:31:26 -08:00
parent 82f9d58a39
commit 4e7a2eccc2
1 changed files with 6 additions and 0 deletions
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6
git-compat-util.h
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@ -63,6 +63,8 @@ extern char *gitstrcasestr(const char *haystack, const char *needle);
static inline void *xmalloc(size_t size)
{
void *ret = malloc(size);
if (!ret && !size)
ret = malloc(1);
if (!ret)
die("Out of memory, malloc failed");
return ret;
@ -71,6 +73,8 @@ static inline void *xmalloc(size_t size)
static inline void *xrealloc(void *ptr, size_t size)
{
void *ret = realloc(ptr, size);
if (!ret && !size)
ret = realloc(ptr, 1);
if (!ret)
die("Out of memory, realloc failed");
return ret;
@ -79,6 +83,8 @@ static inline void *xrealloc(void *ptr, size_t size)
static inline void *xcalloc(size_t nmemb, size_t size)
{
void *ret = calloc(nmemb, size);
if (!ret && (!nmemb || !size))
ret = calloc(1, 1);
if (!ret)
die("Out of memory, calloc failed");
return ret;