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Using gdb Is there anyway to check the stack before the call to abort then raise


Is there anyway to check the stack before the call to abort then raise?
I tried setting a break point on raise, but I only get a few more
lines in the backtrace that do not lead me to the spot in my program
that caused the error.

This was run with MALLOC_CHECK_=2
compiled with -g -rdynamic


Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 1154159760 (LWP 4162)] 0x00000000 in ?? () (gdb) backtrace 20 #0 0x00000000 in ?? () #1 0x00013c80 in Audio::BackgroundThreadFunction (this=0x499c0) at /home/richardr/wcd3100l/arm/lifecor/apps/shell/src/audio.cpp:485 #2 0x00013f20 in BackgroundAudioThread (arg=0x499c0) at /home/richardr/wcd3100l/arm/lifecor/apps/shell/src/audio.cpp:605 #3 0x4035aa6c in start_thread () from /lib/libpthread.so.0 #4 0x4041a198 in clone () from /lib/libc.so.6 Backtrace stopped: frame did not save the PC (gdb) info threads 126 Thread 1215325328 (LWP 4289) 0x40404d7c in sched_yield () from /lib/libc.so.6 20 Thread 1223713936 (LWP 4176) 0x40404d7c in sched_yield () from /lib/libc.so.6 18 Thread 1205945488 (LWP 4174) 0x40362c54 in accept () from /lib/libpthread.so.0 17 Thread 1197556880 (LWP 4173) 0x4035fbdc in pthread_cond_wait@@GLIBC_2.4 () from /lib/libpthread.so.0 16 Thread 1188361360 (LWP 4172) 0x403629a4 in read () from /lib/libpthread.so.0 15 Thread 1179935888 (LWP 4169) 0x403629a4 in read () from /lib/libpthread.so.0 14 Thread 1171547280 (LWP 4168) 0x403629a4 in read () from /lib/libpthread.so.0 13 Thread 1162626192 (LWP 4167) 0x4035fbdc in pthread_cond_wait@@GLIBC_2.4 () from /lib/libpthread.so.0 * 12 Thread 1154159760 (LWP 4162) 0x00000000 in ?? () 11 Thread 1137185936 (LWP 4161) 0x4035d108 in pthread_mutex_lock () from /lib/libpthread.so.0 10 Thread 1145574544 (LWP 4160) 0x403ee074 in nanosleep () from /lib/libc.so.6 7 Thread 1128797328 (LWP 4150) 0x40404d7c in sched_yield () from /lib/libc.so.6 6 Thread 1120408720 (LWP 4149) 0x403ee074 in nanosleep () from /lib/libc.so.6 5 Thread 1112020112 (LWP 4148) 0x4035fbdc in pthread_cond_wait@@GLIBC_2.4 () from /lib/libpthread.so.0 4 Thread 1103631504 (LWP 4147) 0x4035fbdc in pthread_cond_wait@@GLIBC_2.4 () from /lib/libpthread.so.0 3 Thread 1095242896 (LWP 4146) 0x403629a4 in read () from /lib/libpthread.so.0 2 Thread 1086854288 (LWP 4145) 0x40363e90 in do_sigwait () from /lib/libpthread.so.0 1 Thread 1073871200 (LWP 4144) 0x403ee074 in nanosleep () from /lib/libc.so.6

I received the above backtrace after an error occured in my program.
Why cant GDB determine the last function call (if I did not word this
right, I appologize, I am looking for an explanation for why #0 is
0x000000000 in ??).  Is there anyway to catch this info.


===============================================================================


*** glibc detected *** /lifecor/shell: double free or corruption
(!prev): 0x000e8368 ***

Program received signal SIGABRT, Aborted.
[Switching to Thread 1224766608 (LWP 3149)]
0x4039aa24 in raise () from /lib/libc.so.6
(gdb) df
Undefined command: "df".  Try "help".
(gdb) top
Undefined command: "top".  Try "help".
(gdb) bt
#0  0x4039aa24 in raise () from /lib/libc.so.6
#1  0x4039bd5c in abort () from /lib/libc.so.6 Backtrace stopped:
frame did not save the PC
(gdb) info threads
 353 Thread 1241867408 (LWP 3482)  0x4035fed4 in
pthread_cond_timedwait@@GLIBC_2.4 () from /lib/libpthread.so.0
* 20 Thread 1224766608 (LWP 3149)  0x4039aa24 in raise () from
/lib/libc.so.6
 18 Thread 1206998160 (LWP 3147)  0x40362c54 in accept () from
/lib/libpthread.so.0
 17 Thread 1198609552 (LWP 3146)  0x4035fbdc in
pthread_cond_wait@@GLIBC_2.4 () from /lib/libpthread.so.0
 16 Thread 1189414032 (LWP 3145)  0x403629a4 in read () from
/lib/libpthread.so.0
 15 Thread 1180988560 (LWP 3142)  0x403629a4 in read () from
/lib/libpthread.so.0
 14 Thread 1172599952 (LWP 3141)  0x403629a4 in read () from
/lib/libpthread.so.0
 13 Thread 1163916432 (LWP 3140)  0x4035fbdc in
pthread_cond_wait@@GLIBC_2.4 () from /lib/libpthread.so.0
 12 Thread 1155527824 (LWP 3135)  0x403ee074 in nanosleep () from
/lib/libc.so.6
 11 Thread 1137185936 (LWP 3134)  0x4035fbdc in
pthread_cond_wait@@GLIBC_2.4 () from /lib/libpthread.so.0
 10 Thread 1145574544 (LWP 3133)  0x403ee074 in nanosleep () from
/lib/libc.so.6
 7 Thread 1128797328 (LWP 3123)  0x40404d7c in sched_yield () from
/lib/libc.so.6
 6 Thread 1120408720 (LWP 3122)  0x403ee074 in nanosleep () from
/lib/libc.so.6
 5 Thread 1112020112 (LWP 3121)  0x4035fed4 in
pthread_cond_timedwait@@GLIBC_2.4 () from /lib/libpthread.so.0
 4 Thread 1103631504 (LWP 3120)  0x4035fbdc in
pthread_cond_wait@@GLIBC_2.4 () from /lib/libpthread.so.0
 3 Thread 1095242896 (LWP 3119)  0x403629a4 in read () from
/lib/libpthread.so.0
 2 Thread 1086854288 (LWP 3118)  0x40363e90 in do_sigwait () from
/lib/libpthread.so.0
 1 Thread 1073871200 (LWP 3117)  0x403ee074 in nanosleep () from
/lib/libc.so.6
(gdb) quit


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