[FFmpeg-trac] #4269(avcodec:new): flac: assertion error with fuzzed file

[FFmpeg]

#4269: flac: assertion error with fuzzed file
---------------------------------+--------------------------------------
             Reporter:  tholin   |                     Type:  defect
               Status:  new      |                 Priority:  normal
            Component:  avcodec  |                  Version:  git-master
             Keywords:           |               Blocked By:
             Blocking:           |  Reproduced by developer:  0
Analyzed by developer:  0        |
---------------------------------+--------------------------------------
 The attached file sometimes cause an assertion error. It's non-
 deterministic and happens about 30% of the time. Never happens in gdb or
 valgrind.

 {{{
 $ ffmpeg -i assertion_abort.flac
 ffmpeg version N-69116-g7b32856 Copyright (c) 2000-2015 the FFmpeg
 developers
   built on Jan 16 2015 21:07:54 with gcc 4.8.3 (Gentoo 4.8.3 p1.1,
 pie-0.5.9)
   configuration: --prefix=/home/cocobo/repository/mpv-
 build_vanilla_debug/build_libs --enable-static --disable-shared --enable-
 gpl --enable-avresample --enable-debug=gdb --disable-doc --disable-
 optimizations --disable-stripping
   libavutil      54. 17.100 / 54. 17.100
   libavcodec     56. 20.100 / 56. 20.100
   libavformat    56. 19.100 / 56. 19.100
   libavdevice    56.  4.100 / 56.  4.100
   libavfilter     5.  8.100 /  5.  8.100
   libavresample   2.  1.  0 /  2.  1.  0
   libswscale      3.  1.101 /  3.  1.101
   libswresample   1.  1.100 /  1.  1.100
   libpostproc    53.  3.100 / 53.  3.100
 Assertion index > -0x20000000 failed at /home/cocobo/repository/mpv-
 build_vanilla_debug/ffmpeg/libavcodec/parser.c:167
 Aborted
 }}}

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Ticket URL: <https://trac.ffmpeg.org/ticket/4269>
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