tar 1.13.25 runs forever and produces nothing on this test case

tar 1.13.25 runs forever and produces nothing on this test case

[Biederman, Steve]

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tar 1.13.25 runs forever, consuming CPU time, and produces nothing, on the following
test case:

Go to an empty directory.  Extract the attached with "tar -xzf hang.tgz".
Test that tar works on the extracted tree by doing something like "tar -cf /temp/test.tar ."

Now, "mv ATA_INTERFAC ATA_INTERFACE" and then try the tar again: "tar -cf /temp/test.tar ."
and tar will run forever, consuming CPU time, and leaving /temp/test.tar at 0 bytes.
(At least tar 1.13.25 does, on my Win 2000 box.)

Steve Biederman


 <<hang.tgz>> 

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Re: tar 1.13.25 runs forever and produces nothing on this test case

[Christopher Faylor]

On Wed, Jul 16, 2003 at 02:12:18PM -0700, Biederman, Steve wrote:
>tar 1.13.25 runs forever, consuming CPU time, and produces nothing, on
>the following test case:
>
>Go to an empty directory.  Extract the attached with "tar -xzf
>hang.tgz".  Test that tar works on the extracted tree by doing
>something like "tar -cf /temp/test.tar ."
>
>Now, "mv ATA_INTERFAC ATA_INTERFACE" and then try the tar again: "tar
>-cf /temp/test.tar ." and tar will run forever, consuming CPU time, and
>leaving /temp/test.tar at 0 bytes.  (At least tar 1.13.25 does, on my
>Win 2000 box.)

Works fine here.  Sorry.

cgf
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RE: tar 1.13.25 runs forever and produces nothing on this test case

[Igor Pechtchanski]

On Thu, 17 Jul 2003, Biederman, Steve wrote:

> > You'll also want the source for tar.  Get that from setup too.
>
> I don't see where I have a choice within setup for source ...

It's the checkbox marked "Src" between the version and the name of the
package.
	Igor
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Re: tar 1.13.25 runs forever and produces nothing on this test case

[Igor Pechtchanski]

Hmm, I wonder if it would make sense to have an FAQ entry with this info?
I know it's not Cygwin specific, but something like:

   Q: How do I debug something on a Cygwin system?
   A: Same way you do it under any Unix system, i.e., <and the info Larry
      provided below>.

The above would be nice to have to point people at when they need to debug
some application...  Another alternative is to put it in the User's Guide.
	Igor

On Fri, 18 Jul 2003, Larry Hall wrote:

> 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@cygwin.com>
> >>Reply-To: cygwin@cygwin.com
> >>To: "Biederman, Steve" <steve_biederman@mentorg.com>
> >>Cc: "'cygwin@cygwin.com'" <cygwin@cygwin.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@cygwin.com]
> >>>Sent: Thursday, July 17, 2003 11:00 AM
> >>>To: Biederman, Steve
> >>>Cc: 'cygwin@cygwin.com'
> >>>Subject: Re: tar 1.13.25 runs forever and produces nothing on this test case
> >>>
> >>>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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     |,4-  ) )-,_. ,\ (  `'-'		Igor Pechtchanski, Ph.D.
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to the bathroom is a major career booster."  -- Patrick Naughton


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