From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 448B23858C52; Fri, 3 Feb 2023 18:41:41 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 448B23858C52 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1675449701; bh=f9OXkG4ShbQp19M95/rsD+QVFGuyY5veBi4qyRMzJfQ=; h=From:To:Subject:Date:In-Reply-To:References:From; b=l6UN4ivt8kueXmTdgz/mPm5QE01hbqTDYDQxcLDVCUYjxgeB2DcaAMR8bnuAWpwI7 uRmfS5Lu64MLI6yfWNuO6ofNrQRPVYNictUibqU/G0YQwoj8Vagy3AHtY8Tz0jL7Ki cOpBZncMoMwdeIs29lLefNlrUB1x87zqKY7Z5V8M= From: "dcb314 at hotmail dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug middle-end/108657] csmith: possible wrong checksum with -O3 and -ftrivial-auto-var-init=zero Date: Fri, 03 Feb 2023 18:41:41 +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-Version: 13.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: dcb314 at hotmail dot com 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: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 List-Id: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D108657 --- Comment #3 from David Binderman --- (In reply to Andrew Pinski from comment #2) > If I initialize __trans_tmp_13 explictly to 0, the issue goes away .... $ fgrep trans_tmp_13 bug880.c int64_t __trans_tmp_13; (g_452) ^=3D (__trans_tmp_13); $=20 This now looks like a bug in csmith.=