From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 115651 invoked by alias); 7 Jul 2015 21:42:18 -0000 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 Received: (qmail 115587 invoked by uid 48); 7 Jul 2015 21:42:14 -0000 From: "marcus at jet dot franken.de" To: gcc-bugs@gcc.gnu.org Subject: [Bug target/66782] Unable to run 64-bit wine after MS->SYSV register changes Date: Tue, 07 Jul 2015 21:42:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: target X-Bugzilla-Version: 5.1.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: marcus at jet dot franken.de X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: attachments.created Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-SW-Source: 2015-07/txt/msg00575.txt.bz2 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66782 --- Comment #3 from marcus at jet dot franken.de --- Created attachment 35927 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35927&action=edit testcase-min.i gcc -S -fPIC -O2 -g testcase.i -o testcase.s there will be a pattern to spot the miscompilation: call strlen@PLT .LVL27: movq 40(%rsp), %rcx movq %rsi, %rdx However %rsi is clobbered by strlen and should not have been used here.