(gdb) bt
#0  0x40a124cc in memcpy () from /lib/libc.so.6
#1  0x080bec83 in m_config_pop (config=0x84e1b00) at m_option.h:236
#2  0x080b28b9 in play_tree_iter_step (iter=0x84e1b00, d=1, with_nodes=0)
    at playtree.c:558
#3  0x080a65e5 in main (argc=3, argv=0xbffff4b4) at mplayer.c:3506
#4  0x409addb4 in __libc_start_main () from /lib/libc.so.6
(gdb) disass $pc-32 $pc+32
Dump of assembler code from 0x40a124ac to 0x40a124ec:
0x40a124ac <memccpy+60>:        pop    %esi
0x40a124ad <memccpy+61>:        pop    %edi
0x40a124ae <memccpy+62>:        leave
0x40a124af <memccpy+63>:        ret
0x40a124b0 <memcpy>:    mov    0xc(%esp,1),%ecx
0x40a124b4 <memcpy+4>:  mov    %edi,%eax
0x40a124b6 <memcpy+6>:  mov    0x4(%esp,1),%edi
0x40a124ba <memcpy+10>: mov    %esi,%edx
0x40a124bc <memcpy+12>: mov    0x8(%esp,1),%esi
0x40a124c0 <memcpy+16>: cld
0x40a124c1 <memcpy+17>: shr    %ecx
0x40a124c3 <memcpy+19>: jae    0x40a124c6 <memcpy+22>
0x40a124c5 <memcpy+21>: movsb  %ds:(%esi),%es:(%edi)
0x40a124c6 <memcpy+22>: shr    %ecx
0x40a124c8 <memcpy+24>: jae    0x40a124cc <memcpy+28>
0x40a124ca <memcpy+26>: movsw  %ds:(%esi),%es:(%edi)
0x40a124cc <memcpy+28>: repz movsl %ds:(%esi),%es:(%edi)
0x40a124ce <memcpy+30>: mov    %eax,%edi
0x40a124d0 <memcpy+32>: mov    %edx,%esi
0x40a124d2 <memcpy+34>: mov    0x4(%esp,1),%eax
0x40a124d6 <memcpy+38>: ret
0x40a124d7 <memcpy+39>: nop
---Type <return> to continue, or q <return> to quit---
0x40a124d8 <memcpy+40>: nop
0x40a124d9 <memcpy+41>: nop
0x40a124da <memcpy+42>: nop
0x40a124db <memcpy+43>: nop
0x40a124dc <memcpy+44>: nop
0x40a124dd <memcpy+45>: nop
0x40a124de <memcpy+46>: nop
0x40a124df <memcpy+47>: nop
0x40a124e0 <_wordcopy_fwd_aligned>:     push   %ebp
0x40a124e1 <_wordcopy_fwd_aligned+1>:   mov    %esp,%ebp
0x40a124e3 <_wordcopy_fwd_aligned+3>:   sub    $0xc,%esp
0x40a124e6 <_wordcopy_fwd_aligned+6>:   mov    %ebx,(%esp,1)
0x40a124e9 <_wordcopy_fwd_aligned+9>:   mov    %esi,0x4(%esp,1)
End of assembler dump.
(gdb) info all-registers
eax            0x831cb80        137481088
ecx            0x1      1
edx            0x3      3
ebx            0x84dde90        139320976
esp            0xbfffd08c       0xbfffd08c
ebp            0xbfffd0b8       0xbfffd0b8
esi            0x84e25c0        139339200
edi            0x831cb80        137481088
eip            0x40a124cc       0x40a124cc
eflags         0x10212  66066
cs             0x23     35
ss             0x2b     43
ds             0x2b     43
es             0x2b     43
fs             0x0      0
gs             0x7      7
st0            -nan(0xe0e0e0e0e0e0d0d)  (raw 0xffff0e0e0e0e0e0e0d0d)
st1            -nan(0xe000e000e000d00)  (raw 0xffff0e000e000e000d00)
st2            -nan(0xff00ff00f400ec)   (raw 0xffff00ff00ff00f400ec)
st3            -1       (raw 0xbfff8000000000000000)
st4            0        (raw 0x00000000000000000000)
st5            0        (raw 0x00000000000000000000)
st6            0        (raw 0x00000000000000000000)
---Type <return> to continue, or q <return> to quit---
st7            0        (raw 0x00000000000000000000)
fctrl          0x37f    895
fstat          0x4020   16416
ftag           0xffff   65535
fiseg          0x0      0
fioff          0x0      0
foseg          0x0      0
fooff          0x0      0
fop            0x0      0
xmm0           {v4_float = {0x0, 0x0, 0x0, 0x0}, v2_double = {
    0x8000000000000000, 0x8000000000000000}, v16_int8 = {
    0xff <repeats 16 times>}, v8_int16 = {0xffff, 0xffff, 0xffff, 0xffff,
    0xffff, 0xffff, 0xffff, 0xffff}, v4_int32 = {0xffffffff, 0xffffffff,
    0xffffffff, 0xffffffff}, v2_int64 = {0xffffffffffffffff,
    0xffffffffffffffff}, uint128 = 0xffffffffffffffffffffffffffffffff}
xmm1           {v4_float = {0x0, 0x0, 0x0, 0x0}, v2_double = {
    0x8000000000000000, 0x8000000000000000}, v16_int8 = {
    0xff <repeats 16 times>}, v8_int16 = {0xffff, 0xffff, 0xffff, 0xffff,
    0xffff, 0xffff, 0xffff, 0xffff}, v4_int32 = {0xffffffff, 0xffffffff,
    0xffffffff, 0xffffffff}, v2_int64 = {0xffffffffffffffff,
    0xffffffffffffffff}, uint128 = 0xffffffffffffffffffffffffffffffff}
xmm2           {v4_float = {0x0, 0x0, 0x0, 0x0}, v2_double = {
    0x8000000000000000, 0x8000000000000000}, v16_int8 = {
---Type <return> to continue, or q <return> to quit---
    0xff <repeats 16 times>}, v8_int16 = {0xffff, 0xffff, 0xffff, 0xffff,
    0xffff, 0xffff, 0xffff, 0xffff}, v4_int32 = {0xffffffff, 0xffffffff,
    0xffffffff, 0xffffffff}, v2_int64 = {0xffffffffffffffff,
    0xffffffffffffffff}, uint128 = 0xffffffffffffffffffffffffffffffff}
xmm3           {v4_float = {0x0, 0x0, 0x0, 0x0}, v2_double = {
    0x8000000000000000, 0x8000000000000000}, v16_int8 = {
    0xff <repeats 16 times>}, v8_int16 = {0xffff, 0xffff, 0xffff, 0xffff,
    0xffff, 0xffff, 0xffff, 0xffff}, v4_int32 = {0xffffffff, 0xffffffff,
    0xffffffff, 0xffffffff}, v2_int64 = {0xffffffffffffffff,
    0xffffffffffffffff}, uint128 = 0xffffffffffffffffffffffffffffffff}
xmm4           {v4_float = {0x0, 0x0, 0x0, 0x0}, v2_double = {
    0x8000000000000000, 0x8000000000000000}, v16_int8 = {
    0xff <repeats 16 times>}, v8_int16 = {0xffff, 0xffff, 0xffff, 0xffff,
    0xffff, 0xffff, 0xffff, 0xffff}, v4_int32 = {0xffffffff, 0xffffffff,
    0xffffffff, 0xffffffff}, v2_int64 = {0xffffffffffffffff,
    0xffffffffffffffff}, uint128 = 0xffffffffffffffffffffffffffffffff}
xmm5           {v4_float = {0x0, 0x0, 0x0, 0x0}, v2_double = {
    0x8000000000000000, 0x8000000000000000}, v16_int8 = {
    0xff <repeats 16 times>}, v8_int16 = {0xffff, 0xffff, 0xffff, 0xffff,
    0xffff, 0xffff, 0xffff, 0xffff}, v4_int32 = {0xffffffff, 0xffffffff,
    0xffffffff, 0xffffffff}, v2_int64 = {0xffffffffffffffff,
    0xffffffffffffffff}, uint128 = 0xffffffffffffffffffffffffffffffff}
xmm6           {v4_float = {0x0, 0x0, 0x0, 0x0}, v2_double = {
---Type <return> to continue, or q <return> to quit---
    0x8000000000000000, 0x8000000000000000}, v16_int8 = {
    0xff <repeats 16 times>}, v8_int16 = {0xffff, 0xffff, 0xffff, 0xffff,
    0xffff, 0xffff, 0xffff, 0xffff}, v4_int32 = {0xffffffff, 0xffffffff,
    0xffffffff, 0xffffffff}, v2_int64 = {0xffffffffffffffff,
    0xffffffffffffffff}, uint128 = 0xffffffffffffffffffffffffffffffff}
xmm7           {v4_float = {0x0, 0x0, 0x0, 0x0}, v2_double = {
    0x8000000000000000, 0x8000000000000000}, v16_int8 = {
    0xff <repeats 16 times>}, v8_int16 = {0xffff, 0xffff, 0xffff, 0xffff,
    0xffff, 0xffff, 0xffff, 0xffff}, v4_int32 = {0xffffffff, 0xffffffff,
    0xffffffff, 0xffffffff}, v2_int64 = {0xffffffffffffffff,
    0xffffffffffffffff}, uint128 = 0xffffffffffffffffffffffffffffffff}
mxcsr          0x1f80   8064
orig_eax       0xffffffff       -1
mm0            {uint64 = 0xe0e0e0e0e0e0d0d, v2_int32 = {0xe0e0d0d, 0xe0e0e0e},
  v4_int16 = {0xd0d, 0xe0e, 0xe0e, 0xe0e}, v8_int8 = {0xd, 0xd, 0xe, 0xe, 0xe,
    0xe, 0xe, 0xe}}
mm1            {uint64 = 0xe000e000e000d00, v2_int32 = {0xe000d00, 0xe000e00},
  v4_int16 = {0xd00, 0xe00, 0xe00, 0xe00}, v8_int8 = {0x0, 0xd, 0x0, 0xe, 0x0,
    0xe, 0x0, 0xe}}
mm2            {uint64 = 0xff00ff00f400ec, v2_int32 = {0xf400ec, 0xff00ff},
  v4_int16 = {0xec, 0xf4, 0xff, 0xff}, v8_int8 = {0xec, 0x0, 0xf4, 0x0, 0xff,
    0x0, 0xff, 0x0}}
mm3            {uint64 = 0x8000000000000000, v2_int32 = {0x0, 0x80000000},
---Type <return> to continue, or q <return> to quit---
  v4_int16 = {0x0, 0x0, 0x0, 0x8000}, v8_int8 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
    0x0, 0x80}}
mm4            {uint64 = 0x0, v2_int32 = {0x0, 0x0}, v4_int16 = {0x0, 0x0,
    0x0, 0x0}, v8_int8 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}}
mm5            {uint64 = 0x0, v2_int32 = {0x0, 0x0}, v4_int16 = {0x0, 0x0,
    0x0, 0x0}, v8_int8 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}}
mm6            {uint64 = 0x0, v2_int32 = {0x0, 0x0}, v4_int16 = {0x0, 0x0,
    0x0, 0x0}, v8_int8 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}}
mm7            {uint64 = 0x0, v2_int32 = {0x0, 0x0}, v4_int16 = {0x0, 0x0,
    0x0, 0x0}, v8_int8 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}}
(gdb)