From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 23274 invoked by alias); 25 Nov 2014 05:43:44 -0000 Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org Received: (qmail 23237 invoked by uid 55); 25 Nov 2014 05:43:39 -0000 From: "timshen at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug libstdc++/63920] Any regular expression should not match an empty sequence if match_not_null is specified Date: Tue, 25 Nov 2014 05:43:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: libstdc++ X-Bugzilla-Version: 5.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: timshen at gcc dot gnu.org X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-SW-Source: 2014-11/txt/msg02934.txt.bz2 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63920 --- Comment #2 from Tim Shen --- Author: timshen Date: Tue Nov 25 05:43:04 2014 New Revision: 218037 URL: https://gcc.gnu.org/viewcvs?rev=218037&root=gcc&view=rev Log: PR libstdc++/63920 * include/bits/regex_executor.h: Make _M_begin non const. * include/bits/regex_executor.tcc (_Executor<>::_M_search): Increase _M_begin in search algorithm, so that _M_begin is treated as "current start position" for each search iteration. * testsuite/28_regex/algorithms/regex_search/ecma/flags.cc: New testcase. Modified: trunk/libstdc++-v3/ChangeLog trunk/libstdc++-v3/include/bits/regex_executor.h trunk/libstdc++-v3/include/bits/regex_executor.tcc trunk/libstdc++-v3/testsuite/28_regex/algorithms/regex_search/ecma/flags.cc