From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 6679 invoked by alias); 5 Dec 2011 17:00:35 -0000 Received: (qmail 6665 invoked by uid 22791); 5 Dec 2011 17:00:35 -0000 X-SWARE-Spam-Status: No, hits=-2.8 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00,TW_CP X-Spam-Check-By: sourceware.org Received: from localhost (HELO gcc.gnu.org) (127.0.0.1) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Mon, 05 Dec 2011 17:00:22 +0000 From: "lu_zero at gentoo dot org" To: gcc-bugs@gcc.gnu.org Subject: [Bug middle-end/32667] builtin operator= generates memcpy with overlapping memory regions Date: Mon, 05 Dec 2011 17:00:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: middle-end X-Bugzilla-Keywords: wrong-code X-Bugzilla-Severity: normal X-Bugzilla-Who: lu_zero at gentoo dot org X-Bugzilla-Status: NEW X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Changed-Fields: CC Message-ID: In-Reply-To: References: X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated Content-Type: text/plain; charset="UTF-8" MIME-Version: 1.0 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: 2011-12/txt/msg00446.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32667 lu_zero at gentoo dot org changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |lu_zero at gentoo dot org --- Comment #6 from lu_zero at gentoo dot org 2011-12-05 16:59:07 UTC --- Doesn't seem. Here a reduced testcase courtesy of Mans Rullgard struct foo { int x[64]; }; void __attribute__((noinline)) foo(struct foo *a, struct foo *b) { *a = *b; } int main(void) { struct foo a = { 0 }; foo(&a, &a); return 0; }