From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 18011 invoked by alias); 21 Aug 2012 17:35:42 -0000 Received: (qmail 17906 invoked by uid 22791); 21 Aug 2012 17:35:40 -0000 X-SWARE-Spam-Status: No, hits=-4.3 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00,KHOP_THREADED X-Spam-Check-By: sourceware.org Received: from localhost (HELO gcc.gnu.org) (127.0.0.1) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Tue, 21 Aug 2012 17:35:27 +0000 From: "paolo.carlini at oracle dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug libstdc++/54307] [4.7 regression] increases in memory usage by some C++11 (and C++03) standard containers Date: Tue, 21 Aug 2012 17:35:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: libstdc++ X-Bugzilla-Keywords: X-Bugzilla-Severity: major X-Bugzilla-Who: paolo.carlini at oracle dot com X-Bugzilla-Status: WAITING X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: 4.7.2 X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated Content-Type: text/plain; charset="UTF-8" MIME-Version: 1.0 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 X-SW-Source: 2012-08/txt/msg01480.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54307 --- Comment #4 from Paolo Carlini 2012-08-21 17:35:25 UTC --- I have no idea what they are doing in their implementation, there are of course trade offs. When we decide to globally break the ABI to implement a C++11 Standard Conforming std:list we mean to add a data member to provide an O(1) list<>::size(), that is what we already "experimented" in 4.7.0. Unless of course over the next months somebody suggests something else which goes well together with our other design choices.