[FFmpeg-trac] #8153(undetermined:new): signed integer overflow and invalid left shift in libavcodec/ttaenc.c

[FFmpeg]

#8153: signed integer overflow and invalid left shift in libavcodec/ttaenc.c
-------------------------------------+-------------------------------------
             Reporter:  Suhwan       |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:  git-
  undetermined                       |  master
             Keywords:  ubsan        |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug:
 There're signed integer overflow bug and invalid left shift in
 libavcodec/ttaenc.c
 {{{
 libavcodec/ttaenc.c:167:45: runtime error: left shift of 1 by 31 places
 cannot be represented in type 'int'
 SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior
 libavcodec/ttaenc.c:167:45 in
 libavcodec/ttaenc.c:167:55: runtime error: signed integer overflow:
 -2147483648 - 1 cannot be represented in type 'int'
 SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior
 libavcodec/ttaenc.c:167:55 in
 }}}

 How to reproduce:
 {{{
 % ./ffmpeg_g -t 0 -stream_loop 17 -y -r 55 -i ting-dualchannel44.1.wav
 -map 0 -ab 687k -ac 22 -b:v 854k output/tmp.tta

 ffmpeg version N-94887-ge55018ee11 (git master)
 built on ubuntu 18.04 with clang-6 and UBSAN option.
 }}}

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Ticket URL: <https://trac.ffmpeg.org/ticket/8153>
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