[FFmpeg-trac] #11479(avcodec:new): Segfault with LTO - MacOS M4

[FFmpeg]

#11479: Segfault with LTO - MacOS M4
-------------------------------------+-------------------------------------
             Reporter:  Levon        |                    Owner:  (none)
  Gevorgyan                          |
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:  avcodec
              Version:  git-master   |               Resolution:
             Keywords:  SEGFAULT     |               Blocked By:
  macos arm                          |
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
Comment (by Levon Gevorgyan):

 I just want to confirm that this is still an issue on the latest 8.0
 release.
 {{{
 sudo lldb ffprobe test.mkv
 (lldb) target create "ffprobe"
 Current executable set to '/Volumes/External/ffmpeg-
 builder/gitignore/darwin_sysroot/bin/ffprobe' (arm64).
 (lldb) settings set -- target.run-args  "test.mkv"
 (lldb) r
 Process 88020 launched: '/Volumes/External/ffmpeg-
 builder/gitignore/darwin_sysroot/bin/ffprobe' (arm64)
 ffprobe version ab14508 Copyright (c) 2007-2025 the FFmpeg developers
   built with Apple clang version 17.0.0 (clang-1700.0.13.5)
   configuration: --prefix=/Volumes/External/ffmpeg-
 builder/gitignore/darwin_sysroot --libdir=/Volumes/External/ffmpeg-
 builder/gitignore/darwin_sysroot/lib --enable-lto --enable-static --extra-
 cflags='-I/Volumes/External/ffmpeg-
 builder/gitignore/darwin_sysroot/include -flto -O3 -mcpu=native -fPIC'
 --extra-cxxflags='-I/Volumes/External/ffmpeg-
 builder/gitignore/darwin_sysroot/include -flto -O3 -mcpu=native -fPIC'
 --pkg-config=pkg-config --pkg-config-flags=--static --cpu=native
 --arch=native --enable-gpl --enable-version3 --enable-nonfree --disable-
 htmlpages --disable-podpages --disable-txtpages --disable-autodetect
   libavutil      60.  8.100 / 60.  8.100
   libavcodec     62. 11.100 / 62. 11.100
   libavformat    62.  3.100 / 62.  3.100
   libavdevice    62.  1.100 / 62.  1.100
   libavfilter    11.  4.100 / 11.  4.100
   libswscale      9.  1.100 /  9.  1.100
   libswresample   6.  1.100 /  6.  1.100
 Input #0, matroska,webm, from 'test.mkv':
   Metadata:
     TMDB            : movie/37136
     IMDB            : tt0095705
     ENCODER         : Lavf61.3.100
   Duration: 00:00:07.01, start: 0.000000, bitrate: 90915 kb/s
   Chapters:
     Chapter #0:0: start 0.000000, end 6.000000
       Metadata:
         title           : Beirut of all Evil
   Stream #0:0: Video: hevc (Main 10), yuv420p10le(tv,
 bt2020nc/bt2020/smpte2084), 3840x2160 [SAR 1:1 DAR 16:9], 23.98 fps, 23.98
 tbr, 1k tbn (default)
     Metadata:
       BPS             : 90911145
       DURATION        : 00:00:07.006708333
       NUMBER_OF_FRAMES: 165
       NUMBER_OF_BYTES : 79615436
       _STATISTICS_WRITING_APP: mkvpropedit v74.0.0 ('You Oughta Know')
 64-bit
       _STATISTICS_WRITING_DATE_UTC: 2024-04-20 15:37:22
       _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
     Side data:
       DOVI configuration record: version: 1.0, profile: 7, level: 6, rpu
 flag: 1, el flag: 1, bl flag: 1, compatibility id: 6, compression: 0
 Process 88020 stopped
 * thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS
 (code=1, address=0x3)
     frame #0: 0x0000000100ee15a0 ffprobe`___lldb_unnamed_symbol15322 + 8
 ffprobe`___lldb_unnamed_symbol15322:
 ->  0x100ee15a0 <+8>:  ldr    x19, [x0]
     0x100ee15a4 <+12>: add    x0, x19, #0x8
     0x100ee15a8 <+16>: bl     0x100ed43f8    ; ___lldb_unnamed_symbol15188
     0x100ee15ac <+20>: mov    x0, x19
 Target 0: (ffprobe) stopped.
 (lldb) bt
 * thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS
 (code=1, address=0x3)
   * frame #0: 0x0000000100ee15a0 ffprobe`___lldb_unnamed_symbol15322 + 8
     frame #1: 0x000000010037b798 ffprobe`___lldb_unnamed_symbol4416 + 16
     frame #2: 0x000000010033b6b4 ffprobe`___lldb_unnamed_symbol4066 + 52
     frame #3: 0x000000010033b624 ffprobe`___lldb_unnamed_symbol4064 + 176
     frame #4: 0x0000000100012134 ffprobe`main + 24328
     frame #5: 0x000000019cea2b98 dyld`start + 6076
 (lldb)
 }}}
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/11479#comment:2>
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