Date: Mon, 3 Apr 2006 19:25:14 -0400
From: Christopher Faylor <cgf-no-personal-reply-please AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: 20060301 snapshot and later.  sh hangs with very long command line
Message-ID: <20060403232514.GA21368@trixie.casa.cgf.cx>
Reply-To: cygwin AT cygwin DOT com
Mail-Followup-To: cygwin AT cygwin DOT com
References: <98A22DD7-2111-489A-9843-E0176048A2BB AT rehley DOT net> <20060313000602 DOT GA19770 AT trixie DOT casa DOT cgf DOT cx> <442B14EE DOT 5AEFA518 AT dessent DOT net>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <442B14EE.5AEFA518@dessent.net>
User-Agent: Mutt/1.5.11
Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm
Precedence: bulk
Sender: cygwin-owner AT cygwin DOT com
Mail-Followup-To: cygwin AT cygwin DOT com

On Wed, Mar 29, 2006 at 03:14:54PM -0800, Brian Dessent wrote:
>Christopher Faylor wrote:
>>>I was building binutils using the cygwin 20060308 snapshot, and when it
>>>did the check for "finding the maximum length of command line" a sh
>>>shell goes to 99% cpu usage and doesn't return until I end the process
>>>using task manager.
>>>
>>>I isolated the portion of the script that was hanging and was able to
>>>repeat the problem.  The script hangs when it checks for a command line
>>>of length 16384.  This happens every time I run the script, and it is
>>>reproducible for me on at least windows 2000 and windows XP.  I've
>>>attached a test script.
>>>
>>>The problem doesn't happen with the 20060227 snapshot, but appeared in
>>>20060301 and later versions.  It is present in the 20060309 snapshot.
>>
>>Thanks for the test case.  This should be fixed in the next snapshot.
>
>This looks like it has regressed.  I am using CVS HEAD as of yesterday
>and have run into the "finding the maximum length of command line
>arguments" hang in configure scripts.  Peter's testcase fails too.  As
>a workaround I've set cygexec on my mounts which seems to workaround
>the issue (and allows larger commandlines anyway.)

Out of curiousity, does this go away if you mount your /bin directory with
the -X option?  If so, the latest snapshot should fix it.

(and thanks to Corinna for tracking it down while I was in another section
of code going "What th'???")

((The "What th'?" still applies but her fix should work.))

cgf

--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Problem reports:       http://cygwin.com/problems.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/