$ gdb ffplay_g.exe 
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(gdb) run pinball.wmv
Starting program: C:\msys\home\Administrator\ffmpeg-trunk/ffplay_g.exe pinball.w                                             mv

Program received signal SIGSEGV, Segmentation fault.
[Switching to thread 1580.0xd3c]
0x006bf999 in ff_imdct_calc_sse (s=0x1ae2610, output=0x2407d9c, 
    input=0x1ade610, tmp=0x1ae2700) at i386/fft_sse.c:219
219         asm volatile(
(gdb) bt
#0  0x006bf999 in ff_imdct_calc_sse (s=0x1ae2610, output=0x2407d9c, 
    input=0x1ade610, tmp=0x1ae2700) at i386/fft_sse.c:219
#1  0x005dc19e in wma_decode_block (s=0x1ad81b0) at wmadec.c:1114
#2  0x005dcd27 in wma_decode_superframe (avctx=0x19d9120, data=0x17400d0, 
    data_size=0x240ff38, buf=0x1ad3500 "\005", buf_size=1487) at wmadec.c:1158
#3  0x00458c0e in avcodec_decode_audio (avctx=0x19d9120, samples=0x17400d0, 
    frame_size_ptr=0x240ff38, buf=0x1ad3500 "\005", buf_size=1487)
    at utils.c:957
#4  0x004034db in sdl_audio_callback (opaque=0x1740030, stream=0x19d9ca0 "", 
    len=44112) at ffplay.c:1491
#5  0x6bf81fcf in SDL_RunAudio () from c:\msys\mingw\bin\SDL.dll
#6  0x6bfb4b5c in SDL_RunThread () from c:\msys\mingw\bin\SDL.dll
#7  0x6bfb4fa1 in RunThread@4 () from c:\msys\mingw\bin\SDL.dll
#8  0x7c80b683 in KERNEL32!GetModuleFileNameA ()
   from C:\WINDOWS\system32\kernel32.dll
#9  0x01acffe0 in ?? ()
#10 0x00000000 in ?? () from 
#11 0x7c80ff98 in KERNEL32!GlobalLock () from C:\WINDOWS\system32\kernel32.dll
#12 0x01acffe0 in ?? ()
#13 0x7ffdb000 in ?? ()
#14 0x89bf8600 in ?? ()
#15 0x0240ffc0 in ?? ()
#16 0x871503c8 in ?? ()
#17 0xffffffff in ?? ()
#18 0x7c839aa8 in ValidateLocale () from C:\WINDOWS\system32\kernel32.dll
#19 0x7c80b690 in KERNEL32!GetModuleFileNameA ()
   from C:\WINDOWS\system32\kernel32.dll
#20 0x00000000 in ?? () from 
#21 0x00000000 in ?? () from 
#22 0x00000000 in ?? () from 
#23 0x6bfb4f90 in SDL_KillThread () from c:\msys\mingw\bin\SDL.dll
(gdb) Previous frame inner to this frame (corrupt stack?)