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state_tracker: Guard against a possible calloc failure and fix state_tracker_free

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Checks if the passed in tracker is actually valid before attempting to free its members.
This commit is contained in:
Lioncash 2014-09-12 19:27:16 -04:00
parent 9ce8aa74ac
commit 6e63859e0e
1 changed files with 14 additions and 2 deletions
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16
gfx/state_tracker.c
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@ -85,6 +85,14 @@ state_tracker_t* state_tracker_init(const struct state_tracker_info *info)
tracker->info = (struct state_tracker_internal*)
calloc(info->info_elem, sizeof(struct state_tracker_internal));
if (!tracker->info)
{
RARCH_ERR("%s: Allocation of state tracker info failed.", __FUNCTION__);
free(tracker);
return NULL;
}
tracker->info_elem = info->info_elem;
for (i = 0; i < info->info_elem; i++)
@ -138,10 +146,14 @@ state_tracker_t* state_tracker_init(const struct state_tracker_info *info)
void state_tracker_free(state_tracker_t *tracker)
{
free(tracker->info);
if (tracker)
{
free(tracker->info);
#ifdef HAVE_PYTHON
py_state_free(tracker->py);
py_state_free(tracker->py);
#endif
}
free(tracker);
}