From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 5644 invoked by alias); 26 Apr 2009 19:23:41 -0000 Received: (qmail 5585 invoked by uid 48); 26 Apr 2009 19:23:28 -0000 Date: Sun, 26 Apr 2009 19:23:00 -0000 Message-ID: <20090426192328.5584.qmail@sourceware.org> X-Bugzilla-Reason: CC References: Subject: [Bug c++/39875] [4.5 regression] Wrong "value computed is not used" warning In-Reply-To: Reply-To: gcc-bugzilla@gcc.gnu.org To: gcc-bugs@gcc.gnu.org From: "jakub at gcc dot gnu dot org" 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: 2009-04/txt/msg02477.txt.bz2 ------- Comment #2 from jakub at gcc dot gnu dot org 2009-04-26 19:23 ------- No need for templates: void foo () { int *i; (void) *i; // { dg-bogus "value computed is not used" } } This was caused by http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=146132 (PR39551). convert_to_void doesn't know if the conversion to void was caused by explicit cast (in this testcase, no warning should be emitted) or implicit (when it should be emitted). -- jakub at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |lcwu at gcc dot gnu dot org Status|UNCONFIRMED |NEW Ever Confirmed|0 |1 Last reconfirmed|0000-00-00 00:00:00 |2009-04-26 19:23:28 date| | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39875