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Subject:	RE: GDB always receives sigsegv with cygwin 1.3.13-2
Date:	Wed, 16 Oct 2002 09:20:18 -0400
Message-ID:	<83040F98B407E6428FEC18AC720F5D732DB72D@exchange.tropicnetworks.com>
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From:	"Rolf Campbell" <rcampbell AT tropicnetworks DOT com>
To:	<cygwin AT cygwin DOT com>
X-MIME-Autoconverted:	from quoted-printable to 8bit by delorie.com id g9GDKW310122

I tried continuing, it hangs for about 5 minutes, then displays "Can't
read instruction at " and some address starting with 7.

-Rolf

> -----Original Message-----
> From: Christopher Faylor [mailto:cgf AT redhat DOT com] 
> Sent: Tuesday, October 15, 2002 7:41 PM
> To: cygwin AT cygwin DOT com
> Subject: Re: GDB always receives sigsegv with cygwin 1.3.13-2
> 
> 
> On Tue, Oct 15, 2002 at 07:37:31PM -0400, Rolf Campbell wrote:
> >I tried it with 2 different executables (both C++, both 
> compiled with 
> >GCC3.2).  I tried it with both the stock gdb (20010428-3) & the one 
> >listed as experimental (20020718-1).  I also tried it with both 
> >1.3.13-2 & 1.3.12-4.
> >
> >The test was, set a breakpoint at the first line of main (done by 
> >default by the gui), and click the run button.  With both programs & 
> >both versions of GDB, the results were the same:  With 1.3.12-4, it 
> >worked fine.  With 1.3.13-2, gdb got the sigsegv signal.
> 
> You can ask Robert Collins about this.  This is in pthreads 
> code.  There is some pointer validation going on that causes 
> this.  There are two of these, in fact.  I meant to mention 
> them in cygwin-developers but I forgot.
> 
> Just continue beyond the SIGSEGV and you should be ok.
> 
> cgf
> 
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