Re: testsuite errors on Red Hat 8.0

Daniel Jacobowitz
2003-04-16T14:29:10Z

On Wed, Apr 16, 2003 at 10:26:18AM -0400, Elena Zannoni wrote:
> Daniel Jacobowitz writes:
> > 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
>
>
> he he he...See my posting about how bad this problem is going to bite
> us for NPTL kernels. About this particual problem, RH 8.0 doesn't have
> NPTL, but there could be some other interesting kernel 'feature' going
> on.

Fortunately, IIRC, Ulrich has added unwind info to glibc for syscall
wrappers in glibc now? Next step is to use it!

--
Daniel Jacobowitz
MontaVista Software Debian GNU/Linux Developer