Re: LD_DEBUG not giving anything

[Marcus Brinkmann]

On Sat, Jun 16, 2001 at 07:41:32PM -0400, Roland McGrath wrote:
> It's not your breakpoint, it's the starting trap.  You can't use "run" to
> debug initialization, because the initial SIGTRAP is sent after libc is
> initialized.  You need to attach to the task before it starts running.  

Ok, I used shd like you told me.  I used gdb to attach to the pausing thread.
After attaching, I pressed return, set the breakpoint  (it wasn't possible
the other way round) and then hit continue.

This is what I got:


GNU gdb 5.0
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GDB is free software, covered by the GNU General Public License, and you are
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Type "show copying" to see the conditions.
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This GDB was configured as "i386-unknown-gnu0.2"...
/mnt2/15236: No such file or directory.
Attaching to program `/zzz/zzz/zzz/ld-2.2.3.so', pid 15236

warning: Can't modify tracing state for pid 15236: No signal thread
[Switching to bogus thread id 1]
Can't fetch registers from thread 1: No such thread
(gdb) break __open
Breakpoint 1 at 0xefef: file ../sysdeps/mach/hurd/dl-sysdep.c, line 506.
(gdb) c
Continuing.
warning: Can't wait for pid 15236: No child processes
warning: Pid 15236 died with unknown exit status, using SIGKILL.

Program terminated with signal SIGKILL, Killed.
The program no longer exists.