On Tuesday 18 July 2006 19:35, Christian Henz wrote:
>
> The compilation of glibc did not explicitly use "-fomit-frame-pointer", but
> the GCC manual states that "-O" implies it on architectures where it
> doesn't break debugging. Unfortunately it doesn't mention which
> architectures those are. I'm currently recompiling glibc with explicitly
> setting
> "-fno-omit-frame-pointer".
>
This finally did the trick. I configured and compiled glibc using
./configure [...] CFLAGS="-g -O2 -fno-omit-frame-pointer"
Now the backtrace doesn't repeat forever, although I still get "Previous frame
identical to this frame (corrupt stack?)".
# gdb ./testc-armel
GNU gdb 6.4
Copyright 2005 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for details.
This GDB was configured as "arm-linux-gnueabi"...Using host libthread_db
library "/usr/lib/debug/libthread_db.so.1".
(gdb) break test.c:26
Breakpoint 1 at 0x84f4: file test.c, line 26.
(gdb) run
Starting program: /mnt/nessie/nokia770/testc-armel
[Thread debugging using libthread_db enabled]
[New Thread 16384 (LWP 1127)]
BFD: /usr/lib/debug/lib/ld-2.3.6.so: warning: sh_link not set for section
`.ARM.exidx'
[New Thread 32769 (LWP 1130)]
[New Thread 16386 (LWP 1131)]
[Switching to Thread 16384 (LWP 1127)]
Breakpoint 1, main (argc=1, argv=0xbe8e2744) at test.c:26
26 test.c: No such file or directory.
in test.c
(gdb) thread apply all bt
Thread 3 (Thread 16386 (LWP 1131)):
#0 0x40115a84 in sched_yield () at regex_internal.c:71
#1 0x40029af8 in __pthread_acquire (spinlock=0x40037d1c) at spinlock.c:711
#2 0x40024c90 in pthread_start_thread_event (arg=0xbe1ffbe0) at manager.c:329
#3 0x4012ae10 in clone () from /usr/lib/debug/libc.so.6
#4 0x4012ae10 in clone () from /usr/lib/debug/libc.so.6
Previous frame identical to this frame (corrupt stack?)
Thread 2 (Thread 32769 (LWP 1130)):
#0 0x40121f08 in *__GI___poll (fds=0x13000, nfds=1, timeout=2000)
at ../sysdeps/unix/sysv/linux/poll.c:86
#1 0x4002520c in __pthread_manager (arg=0xfffffffc) at manager.c:152
#2 0x40025a88 in __pthread_manager_event (arg=0x46b) at manager.c:249
#3 0x4012ae10 in clone () from /usr/lib/debug/libc.so.6
#4 0x4012ae10 in clone () from /usr/lib/debug/libc.so.6
Previous frame identical to this frame (corrupt stack?)
Thread 1 (Thread 16384 (LWP 1127)):
#0 main (argc=1, argv=0xbe8e2744) at test.c:26
(gdb)
cheers,
Christian Henz
#include <unistd.h>
#include <assert.h>
#include <pthread.h>
void* routine( void* arg ) {
int i = 0;
while( i < 15 ) {
sleep( 1 );
i++;
}
return 0;
}
int main( int argc, char** argv ) {
pthread_t handle;
void* retval;
int err = pthread_create( &handle, 0, routine, 0 );
assert( err == 0 );
err = pthread_join( handle, &retval );
assert( err == 0 );
return 0;
}
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