[FFmpeg-trac] #1064(avformat:open): Div/0 integer exception cased in aiffdec.c for A-Law AIFFs

[FFmpeg]

#1064: Div/0 integer exception cased in aiffdec.c for A-Law AIFFs
------------------------------------+------------------------------------
             Reporter:  dmitrykos   |                    Owner:
                 Type:  defect      |                   Status:  open
             Priority:  important   |                Component:  avformat
              Version:  git-master  |               Resolution:
             Keywords:  aiff        |               Blocked By:
             Blocking:              |  Reproduced by developer:  1
Analyzed by developer:  0           |
------------------------------------+------------------------------------
Changes (by cehoyos):

 * keywords:   => aiff
 * priority:  critical => important
 * status:  new => open
 * component:  FFmpeg => avformat
 * reproduced:  0 => 1


Comment:

 {{{
 $ ffmpeg -i input -acodec pcm_alaw out.aiff

 ...

 (gdb) r -i out.aiff
 Starting program: /home/cehoyos/Projects/ffmpeg/ffmpeg_g -i out.aiff
 [Thread debugging using libthread_db enabled]
 [New Thread 0xb7c056c0 (LWP 25589)]
 ffmpeg version N-38765-ge05253b Copyright (c) 2000-2012 the FFmpeg
 developers
   built on Mar 13 2012 13:21:33 with gcc 4.3.2
   configuration: --cc=/usr/local/gcc-4.3.2/bin/gcc --enable-gpl
   libavutil      51. 42.100 / 51. 42.100
   libavcodec     54. 10.100 / 54. 10.100
   libavformat    54.  2.100 / 54.  2.100
   libavdevice    53.  4.100 / 53.  4.100
   libavfilter     2. 64.101 /  2. 64.101
   libswscale      2.  1.100 /  2.  1.100
   libswresample   0.  7.100 /  0.  7.100
   libpostproc    52.  0.100 / 52.  0.100

 Program received signal SIGFPE, Arithmetic exception.
 [Switching to Thread 0xb7c056c0 (LWP 25589)]
 0x0819f5a7 in aiff_read_header (s=0x8eb6aa0) at libavformat/aiffdec.c:162
 162         codec->bit_rate = codec->sample_rate * (codec->block_align <<
 3) /
 (gdb) bt
 #0  0x0819f5a7 in aiff_read_header (s=0x8eb6aa0) at
 libavformat/aiffdec.c:162
 #1  0x08188146 in avformat_open_input (ps=0xbf805764,
     filename=0xbf807283 "out.aiff", fmt=0x0, options=0x8df766c)
     at libavformat/utils.c:622
 #2  0x080535ab in opt_input_file (o=0xbf805848, opt=0xbf807281 "i",
     filename=0xbf807283 "out.aiff") at ffmpeg.c:3691
 #3  0x0805ef12 in parse_option (optctx=0xbf805848, opt=0xbf807281 "i",
     arg=0xbf807283 "out.aiff", options=0x87c9fc0) at cmdutils.c:300
 #4  0x0805f2a3 in parse_options (optctx=0xbf805848, argc=3,
 argv=0xbf805a84,
     options=0x87c9fc0, parse_arg_function=0x8059b50 <opt_output_file>)
     at cmdutils.c:333
 #5  0x08058dc6 in main (argc=3, argv=0xbf805a84) at ffmpeg.c:5151
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1064#comment:1>
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