test-skeleton.c (xrealloc): Support realloc-as-free
Commit Message
If the requested size is zero, realloc returns NULL, but the
deallocation is still successful.
2016-06-23 Florian Weimer <fweimer@redhat.com>
* test-skeleton.c (xrealloc): Support deallocation with n == 0.
Comments
On 23 Jun 2016 14:23, Florian Weimer wrote:
> If the requested size is zero, realloc returns NULL, but the
> deallocation is still successful.
not exactly. realloc(NULL, 0) will return a valid pointer (much
like malloc(NULL) will). code relies on this to generate cookies.
-mike
@@ -110,7 +110,7 @@ static void *
xrealloc (void *p, size_t n)
{
p = realloc (p, n);
- if (p == NULL)
+ if (p == NULL && n > 0)
oom_error ("realloc", n);
return p;
}