opt: Fix *av_opt_find2(NULL)

Fixes Ticket650 Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
13 years ago · d5e1244ca7
parent 04bb26e3ee
commit d5e1244ca7
1 changed files with 6 additions and 1 deletions
--- a/libavutil/opt.c
+++ b/libavutil/opt.c
@ -753,9 +753,14 @@ const AVOption *av_opt_find(void *obj, const char *name, const char *unit,
 const AVOption *av_opt_find2(void *obj, const char *name, const char *unit,
                             int opt_flags, int search_flags, void **target_obj)
 {
-    const AVClass  *c = *(AVClass**)obj;
+    const AVClass  *c;
    const AVOption *o = NULL;

+    if(!obj)
+        return NULL;
+
+    c= *(AVClass**)obj;
+
    if (search_flags & AV_OPT_SEARCH_CHILDREN) {
        if (search_flags & AV_OPT_SEARCH_FAKE_OBJ) {
            const AVClass *child = NULL;