From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 5689 invoked by alias); 6 Sep 2006 05:59:47 -0000 Received: (qmail 5667 invoked by uid 48); 6 Sep 2006 05:59:40 -0000 Date: Wed, 06 Sep 2006 05:59:00 -0000 Message-ID: <20060906055940.5666.qmail@sourceware.org> X-Bugzilla-Reason: CC References: Subject: [Bug c++/27371] [4.1/4.2 Regression] Does not warn about unused function result (__attribute__((warn_unused_result))) In-Reply-To: Reply-To: gcc-bugzilla@gcc.gnu.org To: gcc-bugs@gcc.gnu.org From: "jason at gcc dot gnu dot org" Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org X-SW-Source: 2006-09/txt/msg00410.txt.bz2 List-Id: ------- Comment #3 from jason at gcc dot gnu dot org 2006-09-06 05:59 ------- This worked in 4.0 by accident, because of the NRV implementation I had in that release which pushed aggregate return values into the argument list of a call. This had some problems, so I later changed it to use a MODIFY_EXPR, which properly expresses what's going on, but interferes with this warning. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27371