[FFmpeg-trac] #7985(undetermined:new): undefined-behavior at libavcodec/vc2enc_dwt.c:69

FFmpeg trac at avcodec.org
Tue Jul 2 06:07:19 EEST 2019

#7985: undefined-behavior at libavcodec/vc2enc_dwt.c:69
             Reporter:  Suhwan       |                     Type:  defect
               Status:  new          |                 Priority:  important
            Component:               |                  Version:  git-
  undetermined                       |  master
             Keywords:  vc2enc_dwt   |               Blocked By:
  ubsan                              |
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
 Summary of the bug:
 There's an undefined-behavior at libavcodec/vc2enc_dwt.c:69:34
 How to reproduce:
 % ffmpeg_g -y -r 74 -i tmp.tiff -map 0 -c:a mpeg1video -c:v vc2
 -disposition:a pgm -disposition:a flv -vframes 46 -r 3 -ab 731 -ar 22050
 -b:v 716k tmp_.adx

 ffmpeg version N-94149-g50e194e6e1 Copyright (c) 2000-2019 the FFmpeg
 built with clang version 9.0.0 (https://github.com/llvm/llvm-project.git

 Patches should be submitted to the ffmpeg-devel mailing list and not this
 bug tracker.

Ticket URL: <https://trac.ffmpeg.org/ticket/7985>
FFmpeg <https://ffmpeg.org>
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