From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 56486 invoked by alias); 28 Jul 2015 21:04:38 -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 56386 invoked by uid 48); 28 Jul 2015 21:04:33 -0000 From: "jason at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug c++/66962] [concepts] overloaded function causing memory blow-up and ICE Date: Tue, 28 Jul 2015 21:04:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: c++ X-Bugzilla-Version: c++-concepts X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: jason at gcc dot gnu.org X-Bugzilla-Status: NEW X-Bugzilla-Resolution: 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: 2015-07/txt/msg02471.txt.bz2 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66962 --- Comment #15 from Jason Merrill --- (In reply to Eric Niebler from comment #9) > Jason, is there anything I can do in my code to avoid the quadratic > explosion while we wait for Andrew to fix the bug? In concepts, !(A && B) is not equivalent to !A || !B because the former is a single predicate, while the latter is a disjunction. So, converting A || B to !(!A && !B) will avoid the explosion at the cost of limiting subsumption.