[FFmpeg-trac] #8145(undetermined:new): left shift of negative value bugs in libavcodec/aptx.c

[FFmpeg]

#8145: left shift of negative value bugs in libavcodec/aptx.c
-------------------------------------+-------------------------------------
             Reporter:  Suhwan       |                     Type:  defect
               Status:  new          |                 Priority:  important
            Component:               |                  Version:  git-
  undetermined                       |  master
             Keywords:  ubsan        |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug:
 There're 6 left shift of negative value bugs and a left shift of large
 number bug in libavcodec/aptx.c
 {{{
 libavcodec/aptx.c:497:38: runtime error: left shift of 622133197 by 23
 places cannot be represented in type 'int32_t' (aka 'int')
 libavcodec/aptx.c:767:90: runtime error: left shift of negative value -21
 libavcodec/aptx.c:762:38: runtime error: left shift of negative value
 -81503
 libavcodec/aptx.c:804:52: runtime error: left shift of negative value -1
 libavcodec/aptx.c:833:48: runtime error: left shift of negative value
 -24576
 libavcodec/aptx.c:483:72: runtime error: left shift of 251900672 by 4
 places cannot be represented in type 'int32_t' (aka 'int')
 libavcodec/aptx.c:495:12: runtime error: left shift of negative value
 -10715331219032
 }}}

 How to reproduce:
 {{{
 % ./ffmpeg_g -y -i Choral.mpc -map 0 -vframes 38 -aframes 109
 output/tmp.aptx
 ffmpeg version N-94887-ge55018ee11 (git master)
 built on ... ubuntu 18.04 with clang-6 and UBSAN option.
 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/8145>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker