X-Recipient:	archive-cygwin AT delorie DOT com
DomainKey-Signature:	a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id
	:list-unsubscribe:list-subscribe:list-archive:list-post
	:list-help:sender:subject:to:references:from:message-id:date
	:mime-version:in-reply-to:content-type
	:content-transfer-encoding; q=dns; s=default; b=gzfJ0RbMGBHIJQLb
	5aLuHFWcQRk8da9r78uZ1odBRETo8e8SRzzwx/GoWYsKHOfEgguPCZA3rcA102Jg
	20GgS1uR6W8s7OoaSODtvz1RVGoj/nyO8aMvAq/P7oqiHqRSOPTziIpvbN3shCOd
	n3JHJ85p0mJCPnTgM35dBtLKWWE=
DKIM-Signature:	v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id
	:list-unsubscribe:list-subscribe:list-archive:list-post
	:list-help:sender:subject:to:references:from:message-id:date
	:mime-version:in-reply-to:content-type
	:content-transfer-encoding; s=default; bh=806Pd7UcDMnguuKLSBSRHq
	E/o+I=; b=Ghu938IUNWiYo0KyUFjOTKqvi8LXH9qp2XmGRnyZ1rORHygOuEPF/V
	KRRcSolFgq4ljdqvAY3QScBHBeLR4jzLvYFmACN6JjaLNvX9VOLqZuP5xe21Hnd/
	HBTxH4a7rpjLUn9XZ3Ls4qGcTZXZYW4F/NzEp6Ok5yBmkspD3xcpM=
Mailing-List:	contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Id:	<cygwin.cygwin.com>
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
Authentication-Results:	sourceware.org; auth=none
X-Virus-Found:	No
X-Spam-SWARE-Status:	No, score=-2.1 required=5.0 tests=AWL,BAYES_00,RP_MATCHES_RCVD,SPF_HELO_PASS,SPF_PASS autolearn=ham version=3.3.2 spammy=6302, click
X-HELO:	limerock02.mail.cornell.edu
X-CornellRouted:	This message has been Routed already.
Subject:	Re: [ANNOUNCEMENT] Updated: gcc-6.3.0-2 (x86/x86_64)(Test)
To:	cygwin AT cygwin DOT com
References:	<announce DOT db6c6795-264e-0936-152e-cfc7adbe2799 AT gmail DOT com> <8dd126b8-69aa-fb61-c12a-3d4afb821a66 AT cornell DOT edu> <1a57c104-79d1-2ea7-90d3-2be3182a2e1e AT otoy DOT com> <120c0997-0182-f4e6-0dfd-5d5afd6fd182 AT gmail DOT com> <8c67221f-19b9-26a3-2562-53a1b01e5fb9 AT otoy DOT com>
From:	Ken Brown <kbrown AT cornell DOT edu>
Message-ID:	<d37c88d1-697b-129a-8855-26c166509368@cornell.edu>
Date:	Thu, 27 Jul 2017 17:45:56 -0400
User-Agent:	Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.2.1
MIME-Version:	1.0
In-Reply-To:	<8c67221f-19b9-26a3-2562-53a1b01e5fb9@otoy.com>
X-PMX-Cornell-Gauge:	Gauge=XXXXX
X-PMX-CORNELL-AUTH-RESULTS:	dkim-out=none;
X-IsSubscribed:	yes

On 7/27/2017 5:39 PM, Ross Smith wrote:
> On 2017-07-28 09:19, Marco Atzeri wrote:
>> On 27/07/2017 23:04, Ross Smith wrote:
>>>
>>> gcc 6.3 works fine for me unless I use threads. Any C++ program that
>>> uses std::thread (and worked with the previous gcc) will fail. Simple
>>> example:
>>>
>>>     #include <iostream>
>>>     #include <thread>
>>>     void payload() {
>>>         std::cout << "Thread\n";
>>>     }
>>>     int main() {
>>>         std::cout << "Start\n";
>>>         std::thread t(payload);
>>>         t.join();
>>>         std::cout << "Done\n";
>>>     }
>>>
>>> Build and run with:
>>>
>>>     g++ thread.cpp -o thread && ./thread || echo Fail
>>>
>>> This will print Fail, indicating that the executable errored out.
>>> There's no other output. Sorry, I'm not familiar enough with gcc
>>> debugging to narrow down the error further.
>>>
>>> Code that uses raw pthreads instead of the C++ API works fine.
>>>
>>> (I'm running 64-bit Cygwin on Windows 8.1.)
>>>
>>> Ross Smith
>>>
>>
>> it works for me on W7-64
>>
>> ./thread || echo "fail"
>> Start
>> Thread
>> Done
>>
>> $ g++ --version
>> g++ (GCC) 6.3.0
> 
> That's interesting. Maybe I have something wrong with my installation? I 
> updated the gcc-core, gcc-g++, and libgcc1 packages to the 6.3 test 
> version; was there something else I needed? (I found those by searching 
> the installed package list in the Cygwin installer for gcc or g++, and 
> seeing which ones offered the option of updating to 6.3; there doesn't 
> seem to be any way of checking what you actually need in a case like this.)

Click the test button when running setup.  You'll see several other 
packages with versions 6.3.0-2, including libstdc++6.

Ken

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

- Raw text -