a user reported a crash of one of my applications when trying to open a png file (and/or a zip file). my application passes the open request to gmerlin-avdec (bgav_open()).
since i was using that last release of gavl/gmerlin/gmerlin-avdec (thats 1.2.0 from 2012, when the world was still young und lusty), i first tried to make sure that i was not hitting an old and already fixed bug. so i updated to SVN head ,and lo and behold the zip ile now correctly fails to open (and no longer crashes). unfortunately, the png file still crashes. this is reproducible with `bgavdump`, so i doubt that the problem is on my application's side. the backtrace (see end-of-mail) indicates that the crash happens within ffmpeg, but i can "play" the png just fine with $ ffplay /tmp/ducks.png the file in question can be downloaded from https://github.com/umlaeute/Gem/blob/master/examples/data/ducks.png any ideas how to fix this? gfmards IOhannes PS: here's the backtrace (which is very similar to the one i get in my own application) $ gdb --args /usr/local/bin/bgavdump /tmp/ducks.png [...] (gdb) run Program received signal SIGSEGV, Segmentation fault. strlen () at ../sysdeps/x86_64/strlen.S:106 106 ../sysdeps/x86_64/strlen.S: No such file or directory. (gdb) bt #0 strlen () at ../sysdeps/x86_64/strlen.S:106 #1 0x00007ffff39b7657 in av_match_name () from /usr/lib/x86_64-linux-gnu/libavutil-ffmpeg.so.54 #2 0x00007ffff52ca4de in av_probe_input_format3 () from /usr/lib/x86_64-linux-gnu/libavformat-ffmpeg.so.56 #3 0x00007ffff52ca692 in av_probe_input_format2 () from /usr/lib/x86_64-linux-gnu/libavformat-ffmpeg.so.56 #4 0x00007ffff52ca6f6 in av_probe_input_format () from /usr/lib/x86_64-linux-gnu/libavformat-ffmpeg.so.56 #5 0x00007ffff7ad5bfe in get_format () from /usr/local/lib/libgmerlin_avdec.so.1 #6 0x00007ffff7ad5c41 in probe_ffmpeg () from /usr/local/lib/libgmerlin_avdec.so.1 #7 0x00007ffff7af5387 in bgav_demuxer_probe () from /usr/local/lib/libgmerlin_avdec.so.1 #8 0x00007ffff7af1116 in bgav_init () from /usr/local/lib/libgmerlin_avdec.so.1 #9 0x00007ffff7af1280 in bgav_open () from /usr/local/lib/libgmerlin_avdec.so.1 #10 0x000000000040355b in main () (gdb)
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