[FFmpeg-devel] Fix leak when user preallocates a AVFormatContext, passes it to av_open_input_file, but file does not exist on disk

Art Clarke aclarke
Mon Jul 6 17:05:15 CEST 2009

On Thu, Jul 2, 2009 at 2:47 PM, Art Clarke <aclarke at xuggle.com> wrote:

> av_open_input_file takes memory ownership of *ic_ptr, and therefore must
> free it if it nulls it.  If you pass in your own AVFormatContext (i.e. you
> pass in AVFormatParameters with prealloced_context>0), but then the file
> doesn't exist on disk, the current code nulls the AVFormatContext pointer
> without freeing it (while if av_open_input_stream fails, it will free it
> before nulling it).
> This patch makes the behavior consistent and patches a leak as a result.
> - Art


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-------------- next part --------------
Index: libavformat/utils.c
--- libavformat/utils.c	(revision 19327)
+++ libavformat/utils.c	(working copy)
@@ -499,6 +499,7 @@
     if (pb)
+    av_free(*ic_ptr);
     *ic_ptr = NULL;
     return err;

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