From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-patches-return-347397-listarch-gcc-patches=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 3270 invoked by alias); 23 Aug 2013 17:51:54 -0000
Mailing-List: contact gcc-patches-help@gcc.gnu.org; run by ezmlm
Precedence: bulk
List-Id: <gcc-patches.gcc.gnu.org>
List-Archive: <http://gcc.gnu.org/ml/gcc-patches/>
List-Post: <mailto:gcc-patches@gcc.gnu.org>
List-Help: <mailto:gcc-patches-help@gcc.gnu.org>
Sender: gcc-patches-owner@gcc.gnu.org
Received: (qmail 3242 invoked by uid 89); 23 Aug 2013 17:51:53 -0000
X-Spam-SWARE-Status: No, score=-3.5 required=5.0 tests=BAYES_00,KHOP_THREADED,RCVD_IN_DNSWL_NONE,RCVD_IN_HOSTKARMA_NO,SPF_HELO_PASS autolearn=ham version=3.3.2
X-Spam-User: qpsmtpd, 2 recipients
Received: from smtprelay04.ispgateway.de (HELO smtprelay04.ispgateway.de) (80.67.31.32)    by sourceware.org (qpsmtpd/0.84/v0.84-167-ge50287c) with ESMTP; Fri, 23 Aug 2013 17:51:52 +0000
Received: from [87.152.167.128] (helo=arch-64-politeia)	by smtprelay04.ispgateway.de with esmtpsa (SSLv3:AES128-SHA:128)	(Exim 4.68)	(envelope-from <stefan@schweter.it>)	id 1VCvWX-0000uX-CJ; Fri, 23 Aug 2013 19:51:49 +0200
Date: Fri, 23 Aug 2013 19:04:00 -0000
From: Stefan Schweter <stefan@schweter.it>
To: Tim Shen <timshen91@gmail.com>
Cc: "libstdc++" <libstdc++@gcc.gnu.org>, gcc-patches <gcc-patches@gcc.gnu.org>
Subject: Re: [Patch 2/2] Localization problem in regex
Message-ID: <20130823195131.51861289@arch-64-politeia>
In-Reply-To: <CAPrifDnYX-GGKycPD1Zcmfuah3i7dXsObQMWKuOGq8iszPETLA@mail.gmail.com>
References: <CAPrifDnYX-GGKycPD1Zcmfuah3i7dXsObQMWKuOGq8iszPETLA@mail.gmail.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: quoted-printable
X-Df-Sender: MjE4ODU1MA==
X-SW-Source: 2013-08/txt/msg01381.txt.bz2

Am Fri, 23 Aug 2013 17:17:41 +0800
schrieb Tim Shen <timshen91@gmail.com>:

> Inspired by this mail:
> http://gcc.gnu.org/ml/libstdc++/2013-08/msg00131.html
>=20
> Thanks!
>=20
>=20

Hi Tim,

I applied the patch + compiled everything - it's working now! Thanks!

But... I found a problem with .imbue():

int main()
{
	std::setlocale(LC_ALL, "");
=09
	std::wstring str2 =3D L"=C3=B6=C3=A4=C3=BC";
	std::wregex re2;
	re2.imbue(std::locale(""));
	re2.assign(L"([[:lower:]]+)");
	std::wsmatch m2;
=09
	std::wsregex_token_iterator end {};
=09
	for (std::wsregex_token_iterator p{str2.begin(), str2.end(),
re2, {1}}; p !=3D end; ++p) { std::wcout << *p << std::endl;
	}

	return 0;
}

Works fine! But when there's no imbue() call, a Segmentation
fault occurs.

int main()
{
	std::setlocale(LC_ALL, "");
=09
	std::wstring str2 =3D L"=C3=B6=C3=A4=C3=BC";
	std::wregex re2;
	//re2.imbue(std::locale(""));
	re2.assign(L"([[:lower:]]+)");
	std::wsmatch m2;
=09
	std::wsregex_token_iterator end {};
=09
	for (std::wsregex_token_iterator p{str2.begin(), str2.end(),
re2, {1}}; p !=3D end; ++p) { std::wcout << *p << std::endl;
	}

	return 0;
}

May be it's better to throw an exception here? Thanks in advance,

Stefan