Re: GDB threading/FP bug

[Daniel Jacobowitz <drow at mvista dot com>]

On Tue, Aug 13, 2002 at 05:11:39PM -0300, bennet brauer wrote:
> Well I'm unable to compile from the head of CVS.  I get the following error 
> as it tries to compile "po"...  This error doesn't exist in 5.2.1.
> 
> file=./`echo fr | sed 's,.*/,,'`.gmo \
>  && rm -f $file && PATH=../src:$PATH no -o $file fr.po
> /bin/sh: no: command not found

Then you're missing a tool needed to compile GDB.   I think it's
gettext at that point.  Be sure you have that and libtool installed.

> 
> 
> I did however find an old, closed, GDB bug that indicated linux 2.2.19 did 
> not have this bug.  And indeed, on a 2.2.19 box, GDB doesn't exhibit this 
> bug with my test program.  Currently I'm working around the issue with a 
> dummy floating point operation at the top of my program.
> 
> 
> >From: Kevin Buettner <kevinb@redhat.com>
> >To: Andrew Cagney <ac131313@ges.redhat.com>, bennet 
> ><bennetbrauer@hotmail.com>
> >CC: gdb@sources.redhat.com
> >Subject: Re: GDB threading/FP bug
> >Date: Thu, 8 Aug 2002 11:36:59 -0700
> >
> >On Aug 8,  1:34pm, Andrew Cagney wrote:
> >
> >> > Some better searching revealed this is a very old bug.  From last
> >> > year:
> >> >
> >> > 
> >http://groups.google.com/groups?hl=en&lr=&ie=UTF-8&th=adfbc404c374e980&seekm=OF36816CDD.AE7D54AF-ONC1256B1F.005622DC%40icos.be&frame=off
> >> >
> >> > I tried running GDB in GDB and I was able to get as far as seeing that
> >> > the floats seemed to be pushed onto the stack correctly until the
> >> > thread switch and all the ptrace stuff, but I wasn't totally sure if
> >> > the bug I was seeing at that point was in the GDB'd GDB or was the
> >> > same bug in the outter GDB.
> >>
> >> [Mailing list changed to something with less spam :-)]
> >>
> >> As you've discovered, there have been a number of very similar bugs that
> >> all involving corrupted FP and threads.  It was thought that fixes for
> >> all such bugs were incorporated into both 5.2.*
> >> (http://sources.redhat.com/gdb/download/) and the mainline
> >> (http://sources.redhat.com/gdb/current/).
> >>
> >> Can you please check that your problem does occur in the latest
> >> release/mainline, and if it does, create a bug report using
> >> http://sources.redhat.com/gdb/bugs/.
> >
> >Yes, I thought this bug was fixed too.
> >
> >FWIW, I just did a build of gdb-5.2.1 on a Red Hat 7.3 machine (x86).
> >I wasn't able to reproduce the bug using the test program provided by
> >Bennet.  (I've also tested the current development sources and, as
> >expected, don't see the bug there either.)
> >
> >Kevin
> 
> 
> 
> 
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-- 
Daniel Jacobowitz
MontaVista Software                         Debian GNU/Linux Developer