(gdb) r -i crash4XM -f null -
Starting program: /Users/vladvladvictorvictor/Desktop/ffmpeg/ffmpeg_g -i crash4XM -f null -
Reading symbols for shared libraries +++++++.............................................................................................................. done
ffmpeg version N-36447-ge00eb0a, Copyright (c) 2000-2012 the FFmpeg developers
  built on Jan  5 2012 02:46:05 with llvm_gcc 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2336.1.00)
  configuration:
  libavutil      51. 34.100 / 51. 34.100
  libavcodec     53. 53.100 / 53. 53.100
  libavformat    53. 29.100 / 53. 29.100
  libavdevice    53.  4.100 / 53.  4.100
  libavfilter     2. 57.101 /  2. 57.101
  libswscale      2.  1.100 /  2.  1.100
  libswresample   0.  5.100 /  0.  5.100
[4xm @ 0x10101ae00] Estimating duration from bitrate, this may be inaccurate
Input #0, 4xm, from 'crash4XM':
  Duration: 00:00:13.17, start: 0.000000, bitrate: 705 kb/s
    Stream #0:0: Audio: pcm_s16le, 22050 Hz, 2 channels, s16, 705 kb/s
Output #0, null, to 'pipe:':
  Metadata:
    encoder         : Lavf53.29.100
    Stream #0:0: Audio: pcm_s16le, 22050 Hz, 2 channels, s16, 705 kb/s
Stream mapping:
  Stream #0:0 -> #0:0 (pcm_s16le -> pcm_s16le)
Press [q] to stop, [?] for help

Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_INVALID_ADDRESS at address: 0x0000000100effff0
0x00007fff97be4e32 in memmove$VARIANT$sse42 ()
(gdb) bt
#0  0x00007fff97be4e32 in memmove$VARIANT$sse42 ()
#1  0x00000001003e5750 in pcm_encode_frame (avctx=0x10101d800, frame=0x1438a9000 "", buf_size=838967345, data=0x11188f000) at pcm.c:171
(gdb) up
#1  0x00000001003e5750 in pcm_encode_frame (avctx=0x10101d800, frame=0x1438a9000 "", buf_size=838967345, data=0x11188f000) at pcm.c:171
171	        memcpy(dst, samples, n*sample_size);
(gdb)