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Date: Wed, 6 Jun 2001 18:19:07 +0200
From: Corinna Vinschen <cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: Select error and stackdumps
Message-ID: <20010606181907.D6416@cygbert.vinschen.de>
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References: <200106061524 DOT f56FOXH20411 AT phobos DOT space DOT swri DOT edu>
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In-Reply-To: <200106061524.f56FOXH20411@phobos.space.swri.edu>; from joey@phobos.space.swri.edu on Wed, Jun 06, 2001 at 10:21:05AM -0500

On Wed, Jun 06, 2001 at 10:21:05AM -0500, Joey Mukherjee wrote:
> 
> >At 06:34 PM 6/5/2001, Joey Mukherjee wrote:
> >>What can I do with a stack dump?  Its not like a core since I tried loading it 
> >>into gdb on the command line, but maybe there is another more obvious way to 
> >>look at it that I'm missing.
> >
> >Yes, look at it with your eyes! ;-)  Its ASCII.
> 
> I did, but how you do make sense of the numbers:
> 
> Exception: STATUS_ACCESS_VIOLATION at eip=0045C115
> eax=00000000 ebx=00000004 ecx=610902DC edx=61095320 esi=610903E8 edi=00000008
> ebp=026CF454 esp=026CF434 program=f:\CYGWIN\sddas\bin\SpectroScalar.exe
> cs=001B ds=0023 es=0023 fs=003B gs=0000 ss=0023
> Stack trace:
> Frame     Function  Args
> 026CF454  0045C115  (0A03EE30, 0A064F90, 000003D3, 00000000)
> 026CFEB4  00401A0F  (00000001, 1A026374, 0A010008, 00000000)
> 026CFF10  61003AEA  (00000000, 0256CFB4, 0715FBB4, 00000004)
> 026CFF40  61003CBD  (0040131C, 0256CFB4, 847B75C0, 804A2D00)
> 026CFF60  61003CFC  (00000000, 00000000, 847B7750, 00000005)
> 026CFF90  00648C73  (0040131C, FFFFFFFF, 80430C77, 00000000)
> 026CFFC0  0040103D  (0256CFB4, 0256D234, 7FFDF000, 1A02397C)
> 026CFFF0  77E992A6  (00401000, 00000000, 000000C8, 00000100)
> 
> How can I convert this to something which would work like a core file?  Is it 
> possible?   I already knew which program was bombing out.  Can I trace this back 
> to a statement in my program?

You can use gdb. If your program is compiled with debug symbols (-g)
and not stripped you can at least find the functions since gdb
knows of course the function-address relation. The above addresses
show that the error happens in your own code. Function addresses
in the 0x61000000 address space are Cygwin functions, the 0x77E...
is a OS function.

Corinna

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Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Developer                                mailto:cygwin AT cygwin DOT com
Red Hat, Inc.

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