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To: cygwin@cygwin.com
Subject: Re: std::mutex bug: Windows handle growth
In-Reply-To: <acEU5Zu2SBB72-2F@calimero.vinschen.de> (Corinna Vinschen via
 Cygwin's message of "Mon, 23 Mar 2026 11:24:37 +0100")
References: <2d48a740-ce2b-4259-8947-f5c875dd1672@hvc.rr.com>
 <87tsu97xr1.fsf@Gerda.invalid> <acEU5Zu2SBB72-2F@calimero.vinschen.de>
Date: Mon, 23 Mar 2026 17:43:36 +0100
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Corinna Vinschen via Cygwin writes:
>> 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?

Yes, but it would also use an initializer function instead of a static
initializer.  Whether that would have any noticeable performance impact
is unclear, but w.r.t. POSIX it's clear that it's no problem to use a
static initializer, just unspecified whether the destructor is trivial
or not.  These two issues should not be mixed up in one configuration
item IMHO.


Achim.
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