DMARC-Filter: OpenDMARC Filter v1.4.2 delorie.com 62NAOvcP3456651
Date: Mon, 23 Mar 2026 11:24:37 +0100
To: ASSI <Stromeko@nexgo.de>
Subject: Re: std::mutex bug: Windows handle growth
Message-ID: <acEU5Zu2SBB72-2F@calimero.vinschen.de>
Mail-Followup-To: ASSI <Stromeko@nexgo.de>, cygwin@cygwin.com
References: <2d48a740-ce2b-4259-8947-f5c875dd1672@hvc.rr.com>
 <87tsu97xr1.fsf@Gerda.invalid>
MIME-Version: 1.0
Content-Disposition: inline
In-Reply-To: <87tsu97xr1.fsf@Gerda.invalid>
Precedence: list
From: Corinna Vinschen via Cygwin <cygwin@cygwin.com>
Reply-To: cygwin@cygwin.com
Cc: Corinna Vinschen <corinna-cygwin@cygwin.com>, cygwin@cygwin.com
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
Errors-To: cygwin-bounces~archive-cygwin=delorie.com@cygwin.com
Sender: "Cygwin" <cygwin-bounces~archive-cygwin=delorie.com@cygwin.com>

Hi Achim,

On Mar 21 21:06, ASSI via Cygwin wrote:
> Frank Eskesen via Cygwin writes:
> > I've run into a problem that occurs on Cygwin that doesn't occur on
> > Linux systems: When a std::mutex is used, it doesn't clean up a
> > Windows handle that it uses.
> 
> I've applied the fix provided by Corinna and built a test version on top
> of the current gcc-13.4 snapshot.  Please test.
> 
> https://repo.or.cz/gcc/cygwin-gcc.git/commitdiff/f3429b7ec960fea9df62bc3c14e257d60fe436f0
> 
> The bug was already reported upstream a long time ago as FreeBSD also
> has an implementation where the mutex can not be destroyed trivially:
> 
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71684

Reading this bug report, wouldn't just defining
_GTHREAD_USE_MUTEX_INIT_FUNC for Cygwin have the same effect?


Thanks,
Corinna

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