From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 5614 invoked by alias); 23 Aug 2011 15:54:23 -0000 Received: (qmail 5603 invoked by uid 22791); 23 Aug 2011 15:54:22 -0000 X-SWARE-Spam-Status: No, hits=-2.9 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00 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, 23 Aug 2011 15:54:08 +0000 From: "jakub at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug c++/50158] [4.7 Regression] invalid 'variable set but not used' warning (boolean used as an index to an array) Date: Tue, 23 Aug 2011 15:55:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: c++ X-Bugzilla-Keywords: diagnostic X-Bugzilla-Severity: normal X-Bugzilla-Who: jakub at gcc dot gnu.org X-Bugzilla-Status: ASSIGNED X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: jakub at gcc dot gnu.org X-Bugzilla-Target-Milestone: 4.7.0 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: 2011-08/txt/msg01931.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50158 --- Comment #4 from Jakub Jelinek 2011-08-23 15:53:23 UTC --- Author: jakub Date: Tue Aug 23 15:53:18 2011 New Revision: 177992 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=177992 Log: PR c++/50158 * typeck.c (cp_build_modify_expr): Call mark_rvalue_use on rhs if it has side-effects and needs to be preevaluated. * g++.dg/warn/Wunused-var-16.C: New test. Added: trunk/gcc/testsuite/g++.dg/warn/Wunused-var-16.C Modified: trunk/gcc/cp/ChangeLog trunk/gcc/cp/typeck.c trunk/gcc/testsuite/ChangeLog