Bug#755717: gst-libav1.0: segfaults when FFmpeg/Libav is built with --enable-small

[Sebastian Dröge]

On Di, 2014-07-22 at 19:06 +0200, Andreas Cadhalpun wrote:
> Source: gst-libav1.0
> Version: 1.4.0-1
> Severity: important
> Tags: upstream
> 
> Dear maintainer,
> 
> gst-libav uses AVInputFormat.long_name pointers without checking if they 
> are NULL. But that happens for example, when FFmpeg/Libav is configured 
> with --enable-small.
> In that case the plugin segfaults, when gstreamer tries to load it (see 
> the attached backtrace).
> 
> So please add the necessary checks for NULL pointers.

Well, just don't build libav/ffmpeg with --enable-small :) This is not
supported by gst-libav and even if we add NULL checks everywhere would
result in a package with less functionality. Basically all demuxers and
muxers would be disabled.
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