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Fix crash with av_tree_enumerate(NULL).

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Originally committed as revision 20537 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2009-11-14 19:14:14 +00:00
parent 25c4fddadc
commit edabf35926
1 changed files with 2 additions and 0 deletions
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libavutil/tree.c
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@ -137,10 +137,12 @@ void av_tree_destroy(AVTreeNode *t){
#if 0 #if 0
void av_tree_enumerate(AVTreeNode *t, void *opaque, int (*cmp)(void *opaque, void *elem), int (*enu)(void *opaque, void *elem)){ 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; int v= cmp ? cmp(opaque, t->elem) : 0;
if(v>=0) av_tree_enumerate(t->child[0], opaque, cmp, enu); if(v>=0) av_tree_enumerate(t->child[0], opaque, cmp, enu);
if(v==0) enu(opaque, t->elem); if(v==0) enu(opaque, t->elem);
if(v<=0) av_tree_enumerate(t->child[1], opaque, cmp, enu); if(v<=0) av_tree_enumerate(t->child[1], opaque, cmp, enu);
}
} }
#endif #endif