[FFmpeg-trac] #2229(build system:new): memalign_hack is not auto-detected anymore for ppc OSX

[FFmpeg]

#2229: memalign_hack is not auto-detected anymore for ppc OSX
-------------------------------------+-------------------------------------
               Reporter:  cehoyos    |                  Owner:
                   Type:  defect     |                 Status:  new
               Priority:  normal     |              Component:  build
                Version:  git-       |  system
  master                             |               Keywords:  regression
             Blocked By:             |  ppc
Reproduced by developer:  0          |               Blocking:
                                     |  Analyzed by developer:  0
-------------------------------------+-------------------------------------
 Current FFmpeg outputs a warning message from free() on ppc OSX, this is a
 regression since 27744fe / 77cfb2
 {{{
 $ ffmpeg -i tests/lena.pnm -vf format=rgba out.png
 ffmpeg version N-49548-ga60530e Copyright (c) 2000-2013 the FFmpeg
 developers
   built on Feb  3 2013 00:48:44 with gcc 4.2.1 (GCC) (Apple Inc. build
 5577)
   configuration: --cc=gcc-4.2 --enable-gpl
   libavutil      52. 17.100 / 52. 17.100
   libavcodec     54. 91.100 / 54. 91.100
   libavformat    54. 61.104 / 54. 61.104
   libavdevice    54.  3.103 / 54.  3.103
   libavfilter     3. 35.100 /  3. 35.100
   libswscale      2.  2.100 /  2.  2.100
   libswresample   0. 17.102 /  0. 17.102
   libpostproc    52.  2.100 / 52.  2.100
 Input #0, image2, from 'tests/lena.pnm':
   Duration: 00:00:00.04, start: 0.000000, bitrate: N/A
     Stream #0:0: Video: ppm, rgb24, 256x256, 25 tbr, 25 tbn, 25 tbc
 Output #0, image2, to 'out.png':
   Metadata:
     encoder         : Lavf54.61.104
     Stream #0:0: Video: png, rgba, 256x256, q=2-31, 200 kb/s, 90k tbn, 25
 tbc
 Stream mapping:
   Stream #0:0 -> #0:0 (ppm -> png)
 Press [q] to stop, [?] for help
 frame=    1 fps=0.0 q=0.0 Lsize=N/A time=00:00:00.04 bitrate=N/A
 video:191kB audio:0kB subtitle:0 global headers:0kB muxing overhead
 -100.011248%
 ffmpeg(42660) malloc: *** error for object 0x197d011: Non-aligned pointer
 being freed
 *** set a breakpoint in malloc_error_break to debug
 }}}
 {{{
 (gdb) r -i tests/lena.pnm -vf format=rgba out.png
 Starting program: ffmpeg_g -i tests/lena.pnm -vf format=rgba out.png
 Reading symbols for shared libraries . done
 ffmpeg version N-49548-ga60530e Copyright (c) 2000-2013 the FFmpeg
 developers
   built on Feb  3 2013 00:48:44 with gcc 4.2.1 (GCC) (Apple Inc. build
 5577)
   configuration: --cc=gcc-4.2 --enable-gpl
   libavutil      52. 17.100 / 52. 17.100
   libavcodec     54. 91.100 / 54. 91.100
   libavformat    54. 61.104 / 54. 61.104
   libavdevice    54.  3.103 / 54.  3.103
   libavfilter     3. 35.100 /  3. 35.100
   libswscale      2.  2.100 /  2.  2.100
   libswresample   0. 17.102 /  0. 17.102
   libpostproc    52.  2.100 / 52.  2.100
 Input #0, image2, from 'tests/lena.pnm':
   Duration: 00:00:00.04, start: 0.000000, bitrate: N/A
     Stream #0:0: Video: ppm, rgb24, 256x256, 25 tbr, 25 tbn, 25 tbc
 Output #0, image2, to 'out.png':
   Metadata:
     encoder         : Lavf54.61.104
     Stream #0:0: Video: png, rgba, 256x256, q=2-31, 200 kb/s, 90k tbn, 25
 tbc
 Stream mapping:
   Stream #0:0 -> #0:0 (ppm -> png)
 Press [q] to stop, [?] for help
 frame=    1 fps=0.0 q=0.0 Lsize=N/A time=00:00:00.04 bitrate=N/A
 video:191kB audio:0kB subtitle:0 global headers:0kB muxing overhead
 -100.011248%
 ffmpeg_g(42676) malloc: *** error for object 0x1186011: Non-aligned
 pointer being freed
 *** set a breakpoint in malloc_error_break to debug

 Breakpoint 1, 0x96da3e68 in malloc_error_break ()
 (gdb) bt
 #0  0x96da3e68 in malloc_error_break ()
 #1  0x96d9ead0 in szone_error ()
 #2  0x0068ddb8 in av_freep (arg=0x100b5f0) at libavutil/mem.c:181
 #3  0x00034c74 in ff_free_pool (pool=0x100b550) at
 libavfilter/buffer.c:107
 #4  0x0003206c in avfilter_free (filter=0x100ab10) at
 libavfilter/avfilter.c:162
 #5  0x00032a04 in avfilter_graph_free (graph=0x100a128) at
 libavfilter/avfiltergraph.c:67
 #6  0x0000c354 in exit_program () at ffmpeg.c:412
 #7  0x96ca6968 in __cxa_finalize ()
 #8  0x96ca6828 in exit ()
 #9  0x00016b98 in main (argc=<value temporarily unavailable, due to
 optimizations>, argv=<value temporarily unavailable, due to
 optimizations>) at ffmpeg.c:3319
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2229>
FFmpeg <http://ffmpeg.org>
FFmpeg issue tracker