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If attempting to free a NULL pointer when MALLOC_DEBUG 

is set, don't bother searching for a region to free, just
immediately exit.

This has the dual benefit of suppressing a warning message
about freeing memory at (nil) and of optimizing the free()
replacement by not having to do any futile searching for
the proper region to free.

(closes issue #13498)
Reported by: pj
Patches:
      13498.patch uploaded by putnopvut (license 60)
Tested by: pj



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@143400 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Mark Michelson 2008-09-17 20:25:40 +00:00
parent 224980b07b
commit 48ffe6e772
1 changed files with 6 additions and 1 deletions
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7
main/astmm.c
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@ -156,10 +156,15 @@ static inline size_t __ast_sizeof_region(void *ptr)
static void __ast_free_region(void *ptr, const char *file, int lineno, const char *func)
{
int hash = HASH(ptr);
int hash;
struct ast_region *reg, *prev = NULL;
unsigned int *fence;
if (!ptr)
return;
hash = HASH(ptr);
ast_mutex_lock(&reglock);
for (reg = regions[hash]; reg; reg = reg->next) {
if (reg->data == ptr) {