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Make realloc() support NULL as pointer. Made to allow us to use these routines

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to memdebug the ares stuff as well.
This commit is contained in:
Daniel Stenberg 2004-02-16 16:23:19 +00:00
parent 29bedfcf7f
commit f2fbb5f3d5
1 changed files with 6 additions and 3 deletions
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9
lib/memdebug.c
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@ -152,21 +152,24 @@ char *curl_dostrdup(const char *str, int line, const char *source)
return mem;
}
/* We provide a realloc() that accepts a NULL as pointer, which then
performs a malloc(). In order to work with ares. */
void *curl_dorealloc(void *ptr, size_t wantedsize,
int line, const char *source)
{
struct memdebug *mem;
struct memdebug *mem=NULL;
size_t size = sizeof(struct memdebug)+wantedsize;
if(countcheck("realloc", line, source))
return NULL;
mem = (struct memdebug *)((char *)ptr - offsetof(struct memdebug, mem));
if(ptr)
mem = (struct memdebug *)((char *)ptr - offsetof(struct memdebug, mem));
mem=(struct memdebug *)(realloc)(mem, size);
if(logfile)
fprintf(logfile, "MEM %s:%d realloc(%p, %d) = %p\n",
fprintf(logfile, "MEM %s:%d realloc(0x%x, %d) = %p\n",
source, line, ptr, wantedsize, mem?mem->mem:NULL);
if(mem) {