GNU gdb 6.4.90-debian
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This GDB was configured as "i486-linux-gnu"...(no debugging symbols found)
Using host libthread_db library "/lib/tls/i686/cmov/libthread_db.so.1".

(gdb) handle SIG33 pass nostop noprint
Signal        Stop	Print	Pass to program	Description
SIG33         No	No	Yes		Real-time event 33
(gdb) set pagination 0
(gdb) run
Starting program: /usr/bin/dosbox 
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[Thread debugging using libthread_db enabled]
[New Thread -1227994432 (LWP 19834)]
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[New Thread -1228878944 (LWP 19837)]
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ALSA lib seq_hw.c:457:(snd_seq_hw_open) open /dev/snd/seq failed: No such file or directory
[New Thread -1255339104 (LWP 19838)]

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1227994432 (LWP 19834)]
0x080abcc6 in ?? ()
(gdb) backtrace
#0  0x080abcc6 in ?? ()
#1  0x080a7a1c in ?? ()
#2  0x0804d339 in ?? ()
#3  0x0804d2ec in ?? ()
#4  0x0804e8a6 in ?? ()
#5  0x081517a3 in std::operator+<char, std::char_traits<char>, std::allocator<char> > ()
#6  0x0814e3fa in std::operator+<char, std::char_traits<char>, std::allocator<char> > ()
#7  0x0814ae53 in std::operator+<char, std::char_traits<char>, std::allocator<char> > ()
#8  0x0814c41c in std::operator+<char, std::char_traits<char>, std::allocator<char> > ()
#9  0x0814bcbe in std::operator+<char, std::char_traits<char>, std::allocator<char> > ()
#10 0x080f6168 in std::operator+<char, std::char_traits<char>, std::allocator<char> > ()
#11 0xb7a7a8cc in __libc_start_main () from /lib/tls/i686/cmov/libc.so.6
#12 0x0804d231 in ?? ()
(gdb) info registers
eax            0xbfc74a90	-1077458288
ecx            0x280001	2621441
edx            0x36	54
ebx            0xc800	51200
esp            0xbfc74a30	0xbfc74a30
ebp            0xbfc74a48	0xbfc74a48
esi            0x300	768
edi            0xbfc76145	-1077452475
eip            0x80abcc6	0x80abcc6 <strcpy@plt+387782>
eflags         0x10202	[ IF RF ]
cs             0x73	115
ss             0x7b	123
ds             0x7b	123
es             0x7b	123
fs             0x0	0
gs             0x33	51
(gdb) thread apply all backtrace

Thread 3 (Thread -1255339104 (LWP 19838)):
#0  0xffffe410 in __kernel_vsyscall ()
#1  0xb7b28803 in poll () from /lib/tls/i686/cmov/libc.so.6
#2  0xb7e56cb8 in snd_pcm_wait_nocheck () from /usr/lib/libasound.so.2
#3  0xb7e56e99 in snd_pcm_wait () from /usr/lib/libasound.so.2
#4  0xb7e58cec in snd_pcm_write_areas () from /usr/lib/libasound.so.2
#5  0xb7e62c40 in snd_pcm_mmap_writei () from /usr/lib/libasound.so.2
#6  0xb7e5189d in snd_pcm_writei () from /usr/lib/libasound.so.2
#7  0xb7da288e in _ConvertX86p32_8RGB332 () from /usr/lib/libSDL-1.2.so.0
#8  0x09a6da60 in ?? ()
#9  0x000001d6 in ?? ()
#10 0xb7dcf828 in ?? () from /usr/lib/libSDL-1.2.so.0
#11 0x00000000 in ?? ()

Thread 2 (Thread -1228878944 (LWP 19837)):
#0  0xffffe410 in __kernel_vsyscall ()
#1  0xb7e04bf6 in __nanosleep_nocancel () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb7dc8228 in SDL_Delay () from /usr/lib/libSDL-1.2.so.0
#3  0xb7dc8271 in SDL_Delay () from /usr/lib/libSDL-1.2.so.0
#4  0xb7d7a53b in SDL_GetThreadID () from /usr/lib/libSDL-1.2.so.0
#5  0xb7dc564d in SDL_ThreadID () from /usr/lib/libSDL-1.2.so.0
#6  0xb7dfe504 in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#7  0xb7b3251e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread -1227994432 (LWP 19834)):
#0  0x080abcc6 in ?? ()
#1  0x080a7a1c in ?? ()
#2  0x0804d339 in ?? ()
#3  0x0804d2ec in ?? ()
#4  0x0804e8a6 in ?? ()
#5  0x081517a3 in std::operator+<char, std::char_traits<char>, std::allocator<char> > ()
#6  0x0814e3fa in std::operator+<char, std::char_traits<char>, std::allocator<char> > ()
#7  0x0814ae53 in std::operator+<char, std::char_traits<char>, std::allocator<char> > ()
#8  0x0814c41c in std::operator+<char, std::char_traits<char>, std::allocator<char> > ()
#9  0x0814bcbe in std::operator+<char, std::char_traits<char>, std::allocator<char> > ()
#10 0x080f6168 in std::operator+<char, std::char_traits<char>, std::allocator<char> > ()
#11 0xb7a7a8cc in __libc_start_main () from /lib/tls/i686/cmov/libc.so.6
#12 0x0804d231 in ?? ()
(gdb) quit
The program is running.  Exit anyway? (y or n)