delorie.com/archives/browse.cgi   search  
Mail Archives: cygwin/2006/05/27/18:08:43

X-Spam-Check-By: sourceware.org
Message-ID: <4478CDD5.E259C90F@dessent.net>
Date: Sat, 27 May 2006 15:08:21 -0700
From: Brian Dessent <brian AT dessent DOT net>
X-Mailer: Mozilla 4.79 [en] (Windows NT 5.0; U)
MIME-Version: 1.0
To: cygwin AT cygwin DOT com
Subject: Re: 1.5.19: changes have broken Qt3
References: <044e01c67e8f$0abed720$a501a8c0 AT CAM DOT ARTIMI DOT COM> <447350C4 DOT 1080604 AT freenet DOT de> <20060523182326 DOT GB6138 AT trixie DOT casa DOT cgf DOT cx> <4473607C DOT 2070806 AT freenet DOT de> <44741E31 DOT 665A1B7 AT dessent DOT net> <447420D1 DOT 8090909 AT freenet DOT de> <4474250C DOT AA4A166 AT dessent DOT net> <44744F28 DOT 905 AT freenet DOT de> <44789FCB DOT 2FFF9168 AT dessent DOT net> <4478B5D3 DOT 4000806 AT freenet DOT de>
X-IsSubscribed: yes
Reply-To: cygwin AT cygwin DOT com
Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Subscribe: <mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive: <http://sourceware.org/ml/cygwin/>
List-Post: <mailto:cygwin AT cygwin DOT com>
List-Help: <mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender: cygwin-owner AT cygwin DOT com
Mail-Followup-To: cygwin AT cygwin DOT com
Delivered-To: mailing list cygwin AT cygwin DOT com

Ralf Habacker wrote:

> There is only one case where I still believe that there may be a problem.
> If a pthread_mutexattr_t is constructed on the stack and the magic class
> membere is be exactly the predefined value, pthread_mutexattr_init()
> will return EBUSY, although there is no good object, it is only by random.

I believe this has been hashed out on the list before as well.  I think
the conclusion is that the app needs to check the return values so that
it can cope with this case.  I don't have a link to the thread handy.

> My currently conclusion is that there are rare conditions in the pthread
> and/or exception stuff, which corrupts the stack and that there is more
> work required to find out the problem.

This I don't doubt, but I think it will just require someone digging
in.  If you can whittle down the qt3 stack overflow crash to a testcase,
then there's a good chance someone reading will give it more attention.

Brian

--
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/

- Raw text -


  webmaster     delorie software   privacy  
  Copyright © 2019   by DJ Delorie     Updated Jul 2019