[FFmpeg-trac] #1108(avutil:new): Always using "default" memory handling from mem.c against own implementation of memory allocator and deallocator.

[FFmpeg]

#1108: Always using "default" memory handling from mem.c against own
implementation of memory allocator and deallocator.
-------------------------------------+-------------------------------------
             Reporter:  mato         |                    Owner:  michael
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:  avutil
              Version:  git-master   |               Resolution:
             Keywords:  memory,      |               Blocked By:
  AVDictionary, alloc, free          |  Reproduced by developer:  0
             Blocking:               |
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------

Comment (by mato):

 If You analize log below You can see that   dyn_buf_write alloc memory in
 libavformat and
 av_dict_free free in libavutil. If I redefine av_malloc and av_free
 dyn_buf_write use my implementation but dyn_buf_write use default
 implementation. That is a problem.

 ==18131== Invalid free() / delete / delete[]
 ==18131== at 0x4025BF0: free (vg_replace_malloc.c:366)
 ==18131== by 0x48B6583: av_dict_free (in
 /media/truecrypt1/work/trunk2_3/src/dlna/target/linux/bin/dms_smm/ffmpeg_libs/libavutil.so.51)
 You can se that free mettod is system one
 ==18131== Address 0x4ccad00 is 16 bytes inside a block of size 41 alloc'd
 ==18131== at 0x402517B: memalign (vg_replace_malloc.c:581)
 ==18131== by 0x8054C00: alloc_ram (av_mem.c:382)
 ==18131== by 0x805545C: av_malloc (av_mem.c:699)
 ==18131== by 0x8055554: av_realloc (av_mem.c:740)
 ==18131== by 0x8054669: av_realloc_f (av_mem.c:186)
 ==18131== by 0x40AEAFC: dyn_buf_write (in
 /media/truecrypt1/work/trunk2_3/src/dlna/target/linux/bin/dms_smm/ffmpeg_libs/libavformat.so.53)
 but here function from libavformat realloc use memory handling from
 av_mem.c (own memory implementation)
 ==18131==
 ==18131== Invalid free() / delete / delete[]
 ==18131== at 0x4025BF0: free (vg_replace_malloc.c:366)
 ==18131== by 0x48B6592: av_dict_free (in
 /media/truecrypt1/work/trunk2_3/src/dlna/target/linux/bin/dms_smm/ffmpeg_libs/libavutil.so.51)
 ==18131== Address 0x4ccb3f0 is 16 bytes inside a block of size 48 alloc'd
 ==18131== at 0x402517B: memalign (vg_replace_malloc.c:581)
 ==18131== by 0x8054C00: alloc_ram (av_mem.c:382)
 ==18131== by 0x805545C: av_malloc (av_mem.c:699)
 ==18131== by 0x8055554: av_realloc (av_mem.c:740)
 ==18131== by 0x8054669: av_realloc_f (av_mem.c:186)
 ==18131== by 0x40AEAFC: dyn_buf_write (in
 /media/truecrypt1/work/trunk2_3/src/dlna/target/linux/bin/dms_smm/ffmpeg_libs/libavformat.so.53)


 next log:

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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1108#comment:4>
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