From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 4694 invoked by alias); 3 Apr 2002 01:46:24 -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 4661 invoked by uid 71); 3 Apr 2002 01:46:22 -0000 Resent-Date: 3 Apr 2002 01:46:22 -0000 Resent-Message-ID: <20020403014622.4660.qmail@sources.redhat.com> Resent-From: gcc-gnats@gcc.gnu.org (GNATS Filer) Resent-To: nobody@gcc.gnu.org Resent-Cc: gcc-prs@gcc.gnu.org, gcc-bugs@gcc.gnu.org, aj@suse.de, rth@redhat.com Resent-Reply-To: gcc-gnats@gcc.gnu.org, dylan@q-games.com Received:(qmail 4109 invoked by uid 61); 3 Apr 2002 01:43:55 -0000 Message-Id:<20020403014355.4108.qmail@sources.redhat.com> Date: Tue, 02 Apr 2002 17:46:00 -0000 From: dylan@q-games.com Reply-To: dylan@q-games.com To: gcc-gnats@gcc.gnu.org Cc: aj@suse.de, rth@redhat.com X-Send-Pr-Version:gnatsweb-2.9.3 (1.1.1.1.2.31) X-GNATS-Notify:aj@suse.de,rth@redhat.com Subject: c++/6144: segment-faults when using sse extensions and ia32 g++ X-SW-Source: 2002-04/txt/msg00143.txt.bz2 List-Id: >Number: 6144 >Category: c++ >Synopsis: segment-faults when using sse extensions and ia32 g++ >Confidential: no >Severity: serious >Priority: medium >Responsible: unassigned >State: open >Class: sw-bug >Submitter-Id: net >Arrival-Date: Tue Apr 02 17:46:21 PST 2002 >Closed-Date: >Last-Modified: >Originator: Dylan Cuthbert (dylan@q-games.com) >Release: 3.1 (25th March 2002 snapshot) >Organization: >Environment: cygwin 1.3.9, windows 2000, Athlon MP (2 processor) 1.2Ghz (problem occurs also on Pentium IV machines) >Description: A simplified piece of code to demonstrate SSE 16 byte values not being stack-aligned correctly in certain cases. The main problem appears to be when they are encapsulated in another class (like a matrix) and then referenced individually in an expression. This makes use of the SSE extensions unreliable and, in effect, unusable so I think the priority should be high. >How-To-Repeat: compile and run the attached code on Pentium IV or Athlon 4. MP or XP chipset. >Fix: Unknown >Release-Note: >Audit-Trail: >Unformatted: