From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 4EAD93858C00; Sat, 17 Jun 2023 20:56:37 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 4EAD93858C00 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1687035397; bh=4v0GDglAnI+9KfUw7NQWzLCQeJj8CCp2d2Nu7qdjgic=; h=From:To:Subject:Date:In-Reply-To:References:From; b=t9JaPofOr2IjRjHrY5otFm02+hTJZf0pYLRomx+1HE6j/Y15O5Nx5LjGyqFg3NcGq T7U9DGkNi9jcLCAEt5s8MI3JQKfR/JIet0cktUNoWPO+PQRXOisq4kYdiTlCau2RNN PxlSwWownJ4Olkd5l02eAzEyVAonT11KuDXEUXm4= From: "slyfox at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug middle-end/110228] [14 Regression] llvm-16 miscompiled due to an maybe uninitialized and optimizations saying that the uninitialized has a nonzero bits of 1. Date: Sat, 17 Jun 2023 20:56:36 +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: 14.0 X-Bugzilla-Keywords: wrong-code X-Bugzilla-Severity: normal X-Bugzilla-Who: slyfox at gcc dot gnu.org X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: 14.0 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=3D110228 --- Comment #14 from Sergei Trofimovich --- > LookupFlags =3D LookupFlags | t; That makes `LookupFlags` to guarantee to contain uninitialized bits. Did you mean `LookupFlags =3D t;`?=