From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 1816 invoked by alias); 23 Apr 2015 15:21:29 -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 1684 invoked by uid 48); 23 Apr 2015 15:21:21 -0000 From: "redi at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug libstdc++/65861] libstdc++ is silently generating wrong code when its std::search is given an input iterator Date: Thu, 23 Apr 2015 15:21:00 -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: 5.1.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: redi 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: 2015-04/txt/msg02040.txt.bz2 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65861 --- Comment #5 from Jonathan Wakely --- (In reply to Jack Howarth from comment #3) > Is the use of _GLIBCXX_CONCEPT_CHECKS well enough advertised in the > documentation that we can expect the average developer to know to invoke it? It's documented three times! :-) https://gcc.gnu.org/onlinedocs/libstdc++/manual/using_macros.html https://gcc.gnu.org/onlinedocs/libstdc++/manual/ext_compile_checks.html https://gcc.gnu.org/onlinedocs/libstdc++/manual/concept_checking.html (In reply to Jack Howarth from comment #4) > Also, is there a simple fix to the test case which avoids the user error or > does the code have to be rewritten in a major way. Don't try to std::search in a streambuf, copy the data elsewhere and search in the copy.