From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Mailing-List: contact gcc-prs-help@gcc.gnu.org; run by ezmlm Received: (qmail 6426 invoked by uid 61); 10 Jan 2003 21:28:15 -0000 Date: Fri, 10 Jan 2003 21:28:00 -0000 Message-ID: <20030110212815.6425.qmail@sources.redhat.com> To: gcc-bugs@gcc.gnu.org, gcc-prs@gcc.gnu.org, nobody@gcc.gnu.org, randy@fieldshome.com From: bangerth@dealii.org Reply-To: bangerth@dealii.org, gcc-bugs@gcc.gnu.org, gcc-prs@gcc.gnu.org, nobody@gcc.gnu.org, randy@fieldshome.com, gcc-gnats@gcc.gnu.org Subject: Re: c/9266: decrement pointer side effects are not working properly X-SW-Source: 2003-01/txt/msg00668.txt.bz2 List-Id: Synopsis: decrement pointer side effects are not working properly State-Changed-From-To: open->closed State-Changed-By: bangerth State-Changed-When: Fri Jan 10 13:28:13 2003 State-Changed-Why: You're changing the same variable twice in the same statement, and the result depends on the order in which this happens. This invokes undefined behavior -- don't do this. W. http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=9266