[FFmpeg-trac] #8150(undetermined:closed): memory leaks from mem.c

[FFmpeg]

#8150: memory leaks from mem.c
-------------------------------------+-------------------------------------
             Reporter:  Suhwan       |                    Owner:
                 Type:  defect       |                   Status:  closed
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  git-master   |               Resolution:  invalid
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
Changes (by jamrial):

 * status:  new => closed
 * resolution:   => invalid


Comment:

 Can't reproduce with GCC 9, so probably a miscompilation bug from Clang

 {{{
 [jamrial at ArchVM build]$ valgrind --error-exitcode=1 --malloc-fill=0x2a
 --track-origins=yes --leak-check=full --gen-suppressions=all
 --suppressions=../ffmpeg/tests/fate-valgrind.supp ./ffmpeg_g -y -r 95 -i
 gizmo-frag-2.mp4 -map 0 -c copy -c: a:75 dnxhd -c: v:3 pcm_s24le
 -disposition: s:12 h261 -aframes 110 -ac 6 -strict 3 tmp.mpc8
 ==44883== Memcheck, a memory error detector
 ==44883== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.
 ==44883== Using Valgrind-3.14.0 and LibVEX; rerun with -h for copyright
 info
 ==44883== Command: ./ffmpeg_g -y -r 95 -i gizmo-frag-2.mp4 -map 0 -c copy
 -c: a:75 dnxhd -c: v:3 pcm_s24le -disposition: s:12 h261 -aframes 110 -ac
 6 -strict 3 tmp.mpc8
 ==44883==
 ffmpeg version N-94969-gc2ab998ff3 Copyright (c) 2000-2019 the FFmpeg
 developers
   built with gcc 9.1.0 (GCC)
   configuration: --enable-gpl --enable-debug
   libavutil      56. 35.100 / 56. 35.100
   libavcodec     58. 57.100 / 58. 57.100
   libavformat    58. 32.104 / 58. 32.104
   libavdevice    58.  9.100 / 58.  9.100
   libavfilter     7. 58.102 /  7. 58.102
   libswscale      5.  6.100 /  5.  6.100
   libswresample   3.  6.100 /  3.  6.100
   libpostproc    55.  6.100 / 55.  6.100
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x4fd26c0] Incorrect number of samples in
 encryption info
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x4fd26c0] Could not find codec parameters for
 stream 0 (Video: h264 (avc1 / 0x31637661), none(bt709), 560x320, 151
 kb/s): unspecified pixel format
 Consider increasing the value for the 'analyzeduration' and 'probesize'
 options
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'gizmo-frag-2.mp4':
   Metadata:
     major_brand     : iso5
     minor_version   : 1
     compatible_brands: avc1iso5dash
     creation_time   : 2014-03-26T00:20:53.000000Z
     encoder         : HandBrake 0.9.9 2013052900
   Duration: 00:00:02.00, bitrate: 608 kb/s
     Stream #0:0(und): Video: h264 (avc1 / 0x31637661), none(bt709),
 560x320, 151 kb/s, SAR 1:1 DAR 7:4, 30 fps, 90k tbr, 90k tbn, 180k tbc
 (default)
     Metadata:
       creation_time   : 2014-03-26T00:20:53.000000Z
       encoder         : JVT/AVC Coding
     Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, mono,
 fltp, 65 kb/s (default)
     Metadata:
       creation_time   : 2014-03-26T00:20:53.000000Z
     Side data:
       unknown side data type 24 (68 bytes)
 [NULL @ 0x52183c0] Unable to find a suitable output format for 'dnxhd'
 dnxhd: Invalid argument
 ==44883==
 ==44883== HEAP SUMMARY:
 ==44883==     in use at exit: 1,044 bytes in 43 blocks
 ==44883==   total heap usage: 826 allocs, 783 frees, 2,258,152 bytes
 allocated
 ==44883==
 ==44883== LEAK SUMMARY:
 ==44883==    definitely lost: 0 bytes in 0 blocks
 ==44883==    indirectly lost: 0 bytes in 0 blocks
 ==44883==      possibly lost: 0 bytes in 0 blocks
 ==44883==    still reachable: 1,044 bytes in 43 blocks
 ==44883==         suppressed: 0 bytes in 0 blocks
 ==44883== Reachable blocks (those to which a pointer was found) are not
 shown.
 ==44883== To see them, rerun with: --leak-check=full --show-leak-kinds=all
 ==44883==
 ==44883== For counts of detected and suppressed errors, rerun with: -v
 ==44883== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 0 from 0)
 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/8150#comment:1>
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