From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 5BF963858C39; Sat, 3 Feb 2024 11:07:31 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 5BF963858C39 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1706958451; bh=jmVhM0tnNjbQq+uGmaB1wfaIYFlAdrPS+ueQQZSHP/A=; h=From:To:Subject:Date:In-Reply-To:References:From; b=gkr0oBU5RC2MtGUtLOMoJX5Z6wdKq2WYlXC1Hs+E6mL3Rl9tEBkKO1tji5NlvcHlg R1nqxS6ayOw7KtTwf6n+R7IuMXSaxwT6nhiRYqUXGHrXe6BPCt/N+lynwTkyHLAI9z 3OHLDobbeAGAk2viMAGWX3NTq8nOaSrqkA9HLIJo= From: "dcb314 at hotmail dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug c/113727] csmith: differences from nothing to -O1 Date: Sat, 03 Feb 2024 11:07:31 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: c X-Bugzilla-Version: 14.0 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=3D113727 --- Comment #10 from David Binderman --- (In reply to Sam James from comment #7) > Can you try produce a testcase without UB please? I have some partly reduced code that seems to have no UB. cvise $ ~/gcc/results/bin/gcc -w -fsanitize=3Daddress,undefined bug1002.c cvise $ ./a.out 1 > 0 cvise $ ~/gcc/results/bin/gcc -w -fsanitize=3Daddress,undefined -O1 bug1002= .c cvise $ ./a.out 1 > 1 cvise $ diff 0 1 469c469 < ...checksum after hashing g_994.f3 : 5F99C263 --- > ...checksum after hashing g_994.f3 : 3D4A5D24 cvise $=