* turn off thread support?
@ 2004-01-12 23:06 Richard Henderson
2004-01-12 23:12 ` Daniel Jacobowitz
2004-01-19 20:20 ` Andrew Cagney
0 siblings, 2 replies; 4+ messages in thread
From: Richard Henderson @ 2004-01-12 23:06 UTC (permalink / raw)
To: gdb
Is there a way to temporarily turn off thread support in gdb?
Also, is there a way to load an alternate thread_db library?
I'm trying to debug libpthread itself, and keep getting told
that the process no longer exists after hitting the SEGV.
r~
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: turn off thread support?
2004-01-12 23:06 turn off thread support? Richard Henderson
@ 2004-01-12 23:12 ` Daniel Jacobowitz
2004-01-12 23:24 ` Richard Henderson
2004-01-19 20:20 ` Andrew Cagney
1 sibling, 1 reply; 4+ messages in thread
From: Daniel Jacobowitz @ 2004-01-12 23:12 UTC (permalink / raw)
To: Richard Henderson; +Cc: gdb
On Mon, Jan 12, 2004 at 03:06:31PM -0800, Richard Henderson wrote:
> Is there a way to temporarily turn off thread support in gdb?
> Also, is there a way to load an alternate thread_db library?
>
> I'm trying to debug libpthread itself, and keep getting told
> that the process no longer exists after hitting the SEGV.
Right now, neither easily. But if you LD_PRELOAD a different
libthread_db.so.1, then dlopen will use the one you gave it; and I
imagine that if you LD_PRELOAD a dummy library with that soname, then
the failed dlsym() calls will cause GDB to disable thread handling.
--
Daniel Jacobowitz
MontaVista Software Debian GNU/Linux Developer
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: turn off thread support?
2004-01-12 23:12 ` Daniel Jacobowitz
@ 2004-01-12 23:24 ` Richard Henderson
0 siblings, 0 replies; 4+ messages in thread
From: Richard Henderson @ 2004-01-12 23:24 UTC (permalink / raw)
To: gdb
On Mon, Jan 12, 2004 at 06:12:36PM -0500, Daniel Jacobowitz wrote:
> Right now, neither easily. But if you LD_PRELOAD a different
> libthread_db.so.1, then dlopen will use the one you gave it;
Good to know. Of course, libthread_db hasn't actually been ported
to this target yet, so I have no confidence it'll work.
> I imagine that if you LD_PRELOAD a dummy library with that soname, then
> the failed dlsym() calls will cause GDB to disable thread handling.
That's an interesting idea...
r~
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: turn off thread support?
2004-01-12 23:06 turn off thread support? Richard Henderson
2004-01-12 23:12 ` Daniel Jacobowitz
@ 2004-01-19 20:20 ` Andrew Cagney
1 sibling, 0 replies; 4+ messages in thread
From: Andrew Cagney @ 2004-01-19 20:20 UTC (permalink / raw)
To: Richard Henderson; +Cc: gdb
> Is there a way to temporarily turn off thread support in gdb?
> Also, is there a way to load an alternate thread_db library?
>
> I'm trying to debug libpthread itself, and keep getting told
> that the process no longer exists after hitting the SEGV.
It's controlled by LD_LIBRARY_PATH, perhaphs try "ruining" that.
Andrew
^ permalink raw reply [flat|nested] 4+ messages in thread
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2004-01-12 23:06 turn off thread support? Richard Henderson
2004-01-12 23:12 ` Daniel Jacobowitz
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