[FFmpeg-trac] #2695(avcodec:closed): Occasional Access Violation: H264 with bad streams

[FFmpeg]

#2695: Occasional Access Violation: H264 with bad streams
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             Reporter:  BlackWarren  |                    Owner:
                 Type:  defect       |                   Status:  closed
             Priority:  normal       |                Component:  avcodec
              Version:  git-master   |               Resolution:  fixed
             Keywords:  h264 crash   |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by BlackWarren):

 The actual crashing (access violation) may be Windows-specific -- under
 Linux, there may always be a couple of kilobytes of dereferenceable memory
 right before anything that's in the heap.  But still, without the patch,
 garbage data will be fetched when stream data is unreliable.

 The crashing was rare, and hard to reproduce, requiring on the order of 1
 GB of streaming data to invoke it.  I never bothered to capture a data set
 that would cause it.  I've just observed that green screening during
 stream play was common before your fix, and now very uncommon.

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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2695#comment:6>
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