[FFmpeg-trac] #5115(avformat:new): SIGFPE in ivf_write_trailer

[FFmpeg]

#5115: SIGFPE in ivf_write_trailer
----------------------------------+--------------------------------------
             Reporter:  tsmith    |                     Type:  defect
               Status:  new       |                 Priority:  normal
            Component:  avformat  |                  Version:  git-master
             Keywords:            |               Blocked By:
             Blocking:            |  Reproduced by developer:  0
Analyzed by developer:  0         |
----------------------------------+--------------------------------------
 Summary of the bug:
 FPE in ivf_write_traile at libavformat/ivfenc.c:80
 {{{
 Program received signal SIGFPE, Arithmetic exception.
 0x0000000000a2c15e in ivf_write_trailer (s=<optimized out>) at
 libavformat/ivfenc.c:80
 80              avio_wl64(pb, ctx->frame_cnt * ctx->sum_delta_pts /
 (ctx->frame_cnt - 1));
 (gdb) bt
 #0  0x0000000000a2c15e in ivf_write_trailer (s=<optimized out>)
     at libavformat/ivfenc.c:80
 #1  0x0000000000b4fd35 in av_write_trailer (s=0x61b00001ea80) at
 libavformat/mux.c:1083
 #2  0x0000000000590d90 in transcode () at ffmpeg.c:4190
 #3  0x00000000005787b8 in main (argc=<optimized out>, argv=<optimized
 out>)
     at ffmpeg.c:4334
 }}}
 How to reproduce:
 {{{
 % ffmpeg -i <test_case> -vcodec copy -an out.ivf

 ffmpeg version N-77454-ge42e0b1 Copyright (c) 2000-2015 the FFmpeg
 developers
   built with Ubuntu clang version 3.7.1-svn253742-1~exp1
 (branches/release_37) (based on LLVM 3.7.1)
   configuration: --cc=clang --cxx=clang++ --disable-libxcb --disable-xlib
 --disable-logging --disable-ffprobe --disable-ffplay --disable-sdl
 --disable-ffserver --disable-doc --disable-pthreads --disable-network
 --disable-d3d11va --disable-dxva2 --disable-vaapi --disable-vda --disable-
 vdpau --disable-stripping --disable-runtime-cpudetect --disable-
 optimizations --disable-pic
   libavutil      55. 11.100 / 55. 11.100
   libavcodec     57. 20.100 / 57. 20.100
   libavformat    57. 20.100 / 57. 20.100
   libavdevice    57.  0.100 / 57.  0.100
   libavfilter     6. 21.101 /  6. 21.101
   libswscale      4.  0.100 /  4.  0.100

 built on linux x86_64
 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/5115>
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