DKIM-Filter:	OpenDKIM Filter v2.11.0 delorie.com 44TA6mNV1606774
Authentication-Results:	delorie.com;
	dkim=pass (1024-bit key, unprotected) header.d=cygwin.com header.i=@cygwin.com header.a=rsa-sha256 header.s=default header.b=e8aGyGKt
X-Recipient:	archive-cygwin AT delorie DOT com
DKIM-Filter:	OpenDKIM Filter v2.11.0 sourceware.org 5F7173858D20
DKIM-Signature:	v=1; a=rsa-sha256; c=relaxed/relaxed; d=cygwin.com;
	s=default; t=1716977206;
	bh=zTDPhT6L5C2XcqFBfE+so3LLFc+oBgGim69+rigsCFU=;
	h=Date:To:Cc:Subject:In-Reply-To:References:List-Id:
	List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe:
	From:Reply-To:From;
	b=e8aGyGKtx4k0V7AJunc8YPYwKJKe9xIdZUEl6wIJeXgVjUqInYwZtziUuwu/fq/oy
	fBWYCXBTiE95QrTuJbwlRfHCXhu/fKgXFpjtJrQiu2doe8Wbq1/KrnMQxIUy3OnIZY
	FIIG9YnPJsN20dK+ylavq9W4HCMH+yU+vDgoCf2o=
X-Original-To:	cygwin AT cygwin DOT com
Delivered-To:	cygwin AT cygwin DOT com
DMARC-Filter:	OpenDMARC Filter v1.4.2 sourceware.org 6674E3858D20
ARC-Filter:	OpenARC Filter v1.0.0 sourceware.org 6674E3858D20
ARC-Seal:	i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1716977185; cv=none;
	b=L422LS4KwAfQLsG+RqQznHAfJE1Z+uzpW1GU+JA6rQ6L5VP4o8w/arPp56oChRfrHFHa5qBQqNs3Z6kxD5WP0K9ZsUAZPWv1pWdtYdLZF2PnI96gTe14URpYR40ODPAQwzLPBT73zY7fdDcNtx2XNWGW7tsMjMUjlYREZaqgYnI=
ARC-Message-Signature:	i=1; a=rsa-sha256; d=sourceware.org; s=key;
	t=1716977185; c=relaxed/simple;
	bh=PA2QfOHmbldWuIZwxaCY39gDj5xXKGRD7QsmqAKUbV0=;
	h=Date:From:To:Subject:Message-Id:Mime-Version:DKIM-Signature;
	b=Gm73Js8ZsVXtwdXUE/HJVd2/bmTyJ0tOSEqL+F0YxNUxY3yOhMzbGgafe5gQkOHfo8chgtvw69zthBy+D84jKk+XQcdhGT0YpnmvpKfoRBhJT1RzJGVtDBXaEY2QaVfqdfvJJzdPp1htyJjwv7IbtjlYuIbsM+anG4TqrolUxb4=
ARC-Authentication-Results:	i=1; server2.sourceware.org
Date:	Wed, 29 May 2024 19:06:19 +0900
To:	cygwin AT cygwin DOT com
Cc:	Bruno Haible <bruno AT clisp DOT org>
Subject:	Re: multithreading broken in Cygwin 3.5.3
Message-Id:	<20240529190619.53c5820ecafcf31909c4320c@nifty.ne.jp>
In-Reply-To:	<3631253.RrQHTzY0li@nimes>
References:	<3631253 DOT RrQHTzY0li AT nimes>
X-Mailer:	Sylpheed 3.7.0 (GTK+ 2.24.30; i686-pc-mingw32)
Mime-Version:	1.0
X-Spam-Status:	No, score=-5.6 required=5.0 tests=BAYES_00, DKIM_SIGNED,
	DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, KAM_NUMSUBJECT, NICE_REPLY_A,
	RCVD_IN_DNSWL_NONE, SPF_HELO_PASS, SPF_PASS, TXREP,
	T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6
X-Spam-Checker-Version:	SpamAssassin 3.4.6 (2021-04-09) on
	server2.sourceware.org
X-BeenThere:	cygwin AT cygwin DOT com
X-Mailman-Version:	2.1.30
List-Id:	General Cygwin discussions and problem reports <cygwin.cygwin.com>
List-Unsubscribe:	<https://cygwin.com/mailman/options/cygwin>,
	<mailto:cygwin-request AT cygwin DOT com?subject=unsubscribe>
List-Archive:	<https://cygwin.com/pipermail/cygwin/>
List-Post:	<mailto:cygwin AT cygwin DOT com>
List-Help:	<mailto:cygwin-request AT cygwin DOT com?subject=help>
List-Subscribe:	<https://cygwin.com/mailman/listinfo/cygwin>,
	<mailto:cygwin-request AT cygwin DOT com?subject=subscribe>
From:	Takashi Yano via Cygwin <cygwin AT cygwin DOT com>
Reply-To:	Takashi Yano <takashi DOT yano AT nifty DOT ne DOT jp>
Errors-To:	cygwin-bounces+archive-cygwin=delorie DOT com AT cygwin DOT com
Sender:	"Cygwin" <cygwin-bounces+archive-cygwin=delorie DOT com AT cygwin DOT com>

On Thu, 23 May 2024 20:09:09 +0200
Bruno Haible wrote:
> In Cygwin 3.5.3, on different machines, I see 3 Gnulib tests failing by
> timeout that worked perfectly fine in Cygwin 3.4.6 and older:
>   FAIL: test-call_once2.exe
>   FAIL: test-lock.exe
>   FAIL: test-pthread-once2.exe
> 
> Find here attached a simplified version of test-pthread-once2.c.
> Compile and run:
>   $ x86_64-pc-cygwin-gcc -Wall foo.c
>   $ ./a
> 
> Expected behaviour: Termination within 1 minute.
> Actual behaviour:   Terminates by timeout after 10 minutes.
> 
> When I change
>   #define ENABLE_DEBUGGING 0
> to
>   #define ENABLE_DEBUGGING 1
> the test does lots of output and terminates within 20 seconds.
> Therefore I can't really tell where the problem comes from.
> But I do see some changes in
>   $ git diff cygwin-3.4.6 cygwin-3.5.3 winsup/cygwin/thread.cc
>   $ git diff cygwin-3.4.6 cygwin-3.5.3 winsup/testsuite/winsup.api/pthread

Thanks for the report.

As you mentioned in private mail to me, this seems to be a regression of
pthread::once() introduced by
commit 2c5433e5da8216aaf7458e50c63683c68fb0d3e8.

I'll submit a patch for that issue shortly.

-- 
Takashi Yano <takashi DOT yano AT nifty DOT ne DOT jp>

-- 
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

- Raw text -