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Date: Fri, 18 Jul 2003 12:54:26 -0400
From: Larry Hall <cygwin-lh AT cygwin DOT com>
Reply-To: cygwin AT cygwin DOT com
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To: andrew brian clegg <a DOT clegg AT mail DOT cryst DOT bbk DOT ac DOT uk>
CC: "'cygwin AT cygwin DOT com'" <cygwin AT cygwin DOT com>
Subject: Re: tar 1.13.25 runs forever and produces nothing on this test ca
  se
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Hi Andrew,

You're welcome.  I hope this is helpful in your efforts.

Larry
andrew brian clegg wrote:

> 
> Larry,
> 
> Can I just jump in here and say thanks for doing this quick intro to
> debugging?
> 
> The closest I've come to gcc and gdb was using DJGPP about eight years ago
> and it's hard to know where to start when things go wrong. This should get
> me started next time something does...
> 
> Andrew.
> 
> On Thu, 17 Jul 2003, Larry Hall wrote:
> 
> 
>>Date: Thu, 17 Jul 2003 15:13:22 -0400
>>From: Larry Hall <cygwin-lh AT cygwin DOT com>
>>Reply-To: cygwin AT cygwin DOT com
>>To: "Biederman, Steve" <steve_biederman AT mentorg DOT com>
>>Cc: "'cygwin AT cygwin DOT com'" <cygwin AT cygwin DOT com>
>>Subject: Re: tar 1.13.25 runs forever and produces nothing on this test
>>    ca  se
>>
>>We'll make a developer out of you yet! :-)
>>
>>You'll need to run setup and install the 'gcc' package (not
>>gcc2) and the 'gdb' package.  That should install everything
>>you need as a build environment.  You'll also want the source
>>for tar.  Get that from setup too.  Once done installing,
>>do the following:
>>
>>   1. cd /usr/src/tar-1.13.25-1/
>>   2. ./configure CFLAGS=-g
>>   3. make
>>
>>Now you can try this version to see if your problem reproduces.
>>The new 'tar' is in ./src.  If you can reproduce the problem there,
>>try it in gdb.  To do so, type 'gdb src/tar.exe'.  At the gdb prompt,
>>type 'r <command line parameters that you give to tar to reproduce
>>the problem>'.  This will start it running.   When you think it's to
>>the point where it's hanging, type ctrl-c to stop it and then 'bt'.
>>This will tell you where you are.  You can step through the code with
>>'n'.  Presumably, you'll see you're cycling through the same statements
>>at some point.
>>
>>This may not point out the source of the problem to you, although
>>you'll have more information to report to the list about the case
>>you're running into.  The steps you took, things you saw, and the
>>result of 'bt' (initially at least) may help someone on this list
>>spot your problem.
>>
>>Good luck and enjoy! ;-)
>>
>>Larry
>>
>>
>>Biederman, Steve wrote:
>>
>>
>>>Which I've never done; I'm not a cygwin developer, just a user.
>>>Do you remember where cygwin documents how to set up a build environment
>>>and get a build going?
>>>
>>>
>>>-----Original Message-----
>>>From: Larry Hall [mailto:cygwin-lh AT cygwin DOT com]
>>>Sent: Thursday, July 17, 2003 11:00 AM
>>>To: Biederman, Steve
>>>Cc: 'cygwin AT cygwin DOT com'
>>>Subject: Re: tar 1.13.25 runs forever and produces nothing on this test
>>>ca se
>>>
>>>
>>>Biederman, Steve wrote:
>>>
>>>
>>>
>>>>Any suggestions how I can proceed to debug why tar acts the way it does for me and
>>>>not for you?
>>>
>>>
>>>
>>>I think you're down to building and debugging the code.
>>>
>>
>>
>>-- 
>>Larry Hall                              http://www.rfk.com
>>RFK Partners, Inc.                      (508) 893-9779 - RFK Office
>>838 Washington Street                   (508) 893-9889 - FAX
>>Holliston, MA 01746
>>
>>
> 
> 
> 
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> 

-- 
Larry Hall                              http://www.rfk.com
RFK Partners, Inc.                      (508) 893-9779 - RFK Office
838 Washington Street                   (508) 893-9889 - FAX
Holliston, MA 01746


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