From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 19618 invoked by alias); 27 Dec 2002 00:56:01 -0000 Mailing-List: contact gcc-prs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Archive: List-Post: List-Help: Sender: gcc-prs-owner@gcc.gnu.org Received: (qmail 19599 invoked by uid 71); 27 Dec 2002 00:56:01 -0000 Resent-Date: 27 Dec 2002 00:56:01 -0000 Resent-Message-ID: <20021227005601.19598.qmail@sources.redhat.com> Resent-From: gcc-gnats@gcc.gnu.org (GNATS Filer) Resent-Cc: gcc-prs@gcc.gnu.org, gcc-bugs@gcc.gnu.org Resent-Reply-To: gcc-gnats@gcc.gnu.org, andrej.filipcic@ijs.si Received: (qmail 10630 invoked by uid 61); 27 Dec 2002 00:46:49 -0000 Message-Id: <20021227004649.10629.qmail@sources.redhat.com> Date: Thu, 26 Dec 2002 16:56:00 -0000 From: andrej.filipcic@ijs.si Reply-To: andrej.filipcic@ijs.si To: gcc-gnats@gcc.gnu.org X-Send-Pr-Version: gnatsweb-2.9.3 (1.1.1.1.2.31) Subject: c++/9062: gcc 3.2.0, 3.2.1 optimization bug with postincrement X-SW-Source: 2002-12/txt/msg01305.txt.bz2 List-Id: >Number: 9062 >Category: c++ >Synopsis: gcc 3.2.0, 3.2.1 optimization bug with postincrement >Confidential: no >Severity: serious >Priority: medium >Responsible: unassigned >State: open >Class: sw-bug >Submitter-Id: net >Arrival-Date: Thu Dec 26 16:56:01 PST 2002 >Closed-Date: >Last-Modified: >Originator: andrej.filipcic@ijs.si >Release: unknown-1.0 >Organization: >Environment: redhat 8.0 >Description: The following code miscompiles with "g++ -O2" gcc-3.2.0, gcc-3.2.1. "-O0,1,3" gives correct results. Output of "-O2" is "bcdefgh" instead of "abcdefgh" Equivalent in c only works with "-O1". ---------------------- #include using namespace std; void str2lower(char *p) { while(*p) *p++=tolower(*p); } int main() { char str[]="Abcdefgh"; str2lower(str); cout<How-To-Repeat: >Fix: >Release-Note: >Audit-Trail: >Unformatted: