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Date: Wed, 16 Apr 2003 13:34:00 -0000
From: Daniel Jacobowitz <drow@mvista.com>
To: David Carlton <carlton@math.stanford.edu>
Cc: gdb@sources.redhat.com
Subject: Re: testsuite errors on Red Hat 8.0
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	gdb@sources.redhat.com
References: <ro1vfxf2iil.fsf@jackfruit.Stanford.EDU> <20030416041146.GA2311@nevyn.them.org> <ro1ptnn2hjf.fsf@jackfruit.Stanford.EDU>
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On Tue, Apr 15, 2003 at 09:27:32PM -0700, David Carlton wrote:
> On Wed, 16 Apr 2003 00:11:46 -0400, Daniel Jacobowitz <drow@mvista.com> said:
> 
> >> and in gdb.threads/pthreads.exp, I get:
> >> 
> >> FAIL: gdb.threads/pthreads.exp: check backtrace from main thread
> >> FAIL: gdb.threads/pthreads.exp: apply backtrace command to all three threads
> 
> > These I'd definitely like to see the log for.
> 
> I'll put it after my signature.


> thread apply 1 backtrace
> 
> Thread 1 (Thread 16384 (LWP 14967)):
> #0  0x4013a816 in nanosleep () from /lib/libc.so.6
> #1  0x00000000 in ?? ()
> 51        if (verbose) printf("common_routine (%d)\n", arg);
> (gdb) FAIL: gdb.threads/pthreads.exp: check backtrace from main thread

We can no longer backtrace out of nanosleep on your system, if we ever
could.

The possible fixes:
  - adding unwind info to glibc syscall stubs and making gdb use it
  - synthesizing unwind info when we recognize a syscall stub and using
    it
  - improving the prologue analyzer until it works for this function

-- 
Daniel Jacobowitz
MontaVista Software                         Debian GNU/Linux Developer