[FFmpeg-trac] #3120(undetermined:new): Crash when converting internal SSA to SRT

[FFmpeg]

#3120: Crash when converting internal SSA to SRT
-------------------------------------+-------------------------------------
             Reporter:  eelco        |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  important    |                Component:
              Version:  git-master   |  undetermined
             Keywords:  crash        |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
-------------------------------------+-------------------------------------

Comment (by eelco):

 {{{
 * thread #1: tid = 0x2e10b6, 0x00007fff92b42866
 libsystem_kernel.dylib`__pthread_kill + 10, queue = 'com.apple.main-
 thread, stop reason = signal SIGABRT
     frame #0: 0x00007fff92b42866 libsystem_kernel.dylib`__pthread_kill +
 10
     frame #1: 0x00007fff92be335c libsystem_pthread.dylib`pthread_kill + 92
     frame #2: 0x00007fff8d1d2bba libsystem_c.dylib`abort + 125
     frame #3: 0x00007fff868956a4 libsystem_malloc.dylib`szone_error + 587
     frame #4: 0x00007fff8689b708
 libsystem_malloc.dylib`small_malloc_from_free_list + 1162
     frame #5: 0x00007fff8689a7c6
 libsystem_malloc.dylib`szone_malloc_should_clear + 1327
     frame #6: 0x00007fff868910cc libsystem_malloc.dylib`szone_realloc +
 2035
     frame #7: 0x00007fff8689cc71
 libsystem_malloc.dylib`malloc_zone_realloc + 79
     frame #8: 0x00007fff8689d3a7 libsystem_malloc.dylib`realloc + 174
     frame #9: 0x000000010019d3d0 ffmpeg_g`ass_split_section [inlined]
 realloc_section_array(ctx=0x0000000101204860) + 38 at ass_split.c:181
     frame #10: 0x000000010019d3aa
 ffmpeg_g`ass_split_section(ctx=0x0000000101204860, buf=<unavailable>) +
 922 at ass_split.c:241
     frame #11: 0x000000010019c415
 ffmpeg_g`ass_split(ctx=0x0000000101204860, buf=0x000000010182dbb2) + 53 at
 ass_split.c:284
     frame #12: 0x000000010019c64c
 ffmpeg_g`ff_ass_split_dialog(ctx=0x0000000101204860,
 buf=0x000000010182dbb2, cache=<unavailable>, number=0x0000000000000000) +
 108 at ass_split.c:350
     frame #13: 0x000000010019d820
 ffmpeg_g`ssa_decode_frame(avctx=0x0000000102090a00,
 data=0x00007fff5fbf9950, got_sub_ptr=0x00007fff5fbf986c,
 avpkt=0x00007fff5fbf9668) + 64 at assdec.c:60
     frame #14: 0x0000000100533de9
 ffmpeg_g`avcodec_decode_subtitle2(avctx=0x0000000102090a00,
 sub=0x00007fff5fbf9950, got_sub_ptr=0x00007fff5fbf986c,
 avpkt=0x00007fff5fbf9808) + 777 at utils.c:2462
     frame #15: 0x0000000100011d87 ffmpeg_g`output_packet [inlined]
 transcode_subtitles(got_output=0x5fbf992800000000, pkt=0x0000000101206980,
 ist=<unavailable>) + 8 at ffmpeg.c:1766
     frame #16: 0x0000000100011d7f
 ffmpeg_g`output_packet(ist=0x0000000102b011a0, pkt=0x00007fff5fbfa5c0) +
 575 at ffmpeg.c:1889
     frame #17: 0x0000000100010583 ffmpeg_g`transcode [inlined]
 process_input + 4720 at ffmpeg.c:3115
     frame #18: 0x000000010000f313 ffmpeg_g`transcode [inlined]
 transcode_step at ffmpeg.c:3211
     frame #19: 0x000000010000f313 ffmpeg_g`transcode + 11939 at
 ffmpeg.c:3263
     frame #20: 0x000000010000beb6 ffmpeg_g`main(argc=<unavailable>,
 argv=<unavailable>) + 342 at ffmpeg.c:3441
     frame #21: 0x00007fff91bb05fd libdyld.dylib`start + 1
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/3120#comment:2>
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