From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 32A37385625A; Tue, 24 May 2022 06:22:29 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 32A37385625A From: "roc at ocallahan dot org" To: gcc-bugs@gcc.gnu.org Subject: [Bug libgcc/105708] libgcc: aarch64: init_lse_atomics can race with user-defined constructors Date: Tue, 24 May 2022 06:22:28 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: libgcc X-Bugzilla-Version: 11.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: roc at ocallahan dot org X-Bugzilla-Status: RESOLVED X-Bugzilla-Resolution: WONTFIX 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: cc 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 X-BeenThere: gcc-bugs@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-bugs mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 24 May 2022 06:22:29 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D105708 roc at ocallahan dot org changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |roc at ocallahan dot org --- Comment #9 from roc at ocallahan dot org --- It is a limitation of rr that we can't handle LL/SC, but it's not a bug we = can just fix or work around. There is just no way to handle it in rr without hardware changes. Thus, if we can't find a way around this bug here, many Aarch64 users won't= be able to use rr when they otherwise would have been able to. That would be unfortunate.=