From edabf3592610323b7f2cf1bf7c6881ce3b4aebc5 Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michaelni@gmx.at>
Date: Sat, 14 Nov 2009 19:14:14 +0000
Subject: [PATCH] Fix crash with av_tree_enumerate(NULL).
Originally committed as revision 20537 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
libavutil/tree.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/libavutil/tree.c b/libavutil/tree.c
index 07814536852..85ef629b987 100644
--- a/libavutil/tree.c
+++ b/libavutil/tree.c
@@ -137,10 +137,12 @@ void av_tree_destroy(AVTreeNode *t){
#if 0
void av_tree_enumerate(AVTreeNode *t, void *opaque, int (*cmp)(void *opaque, void *elem), int (*enu)(void *opaque, void *elem)){
+ if(t){
int v= cmp ? cmp(opaque, t->elem) : 0;
if(v>=0) av_tree_enumerate(t->child[0], opaque, cmp, enu);
if(v==0) enu(opaque, t->elem);
if(v<=0) av_tree_enumerate(t->child[1], opaque, cmp, enu);
+ }
}
#endif
--
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