From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugzilla@gcc.gnu.org>
Received: by sourceware.org (Postfix, from userid 48)
	id 0FD263858CDB; Thu,  4 May 2023 18:31:51 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 0FD263858CDB
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org;
	s=default; t=1683225111;
	bh=d1G0OR/Qqrtn8YQfVCgAXAZMVYjufB1jl9jrUzUSeog=;
	h=From:To:Subject:Date:In-Reply-To:References:From;
	b=ujtJkLSoeyg7b92V9YwX7UuYCcxJV+PB2iscZAjwzIC9mXB+l5nXsDjAki54GhAYh
	 MuMuH57U1dijtlr59OvyRHmnzckt7X6ZagPOuNwDQWg5JhClQAJcWz2m+qdGMjDcbp
	 LdC+70yj0P3WzEL39DvoUE2hB/BGg8AwhzGjwmh4=
From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/109741] alignas(64) in
 libstdc++-v3/src/c++11/shared_ptr.cc
Date: Thu, 04 May 2023 18:31:50 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: libstdc++
X-Bugzilla-Version: 13.1.0
X-Bugzilla-Keywords: 
X-Bugzilla-Severity: normal
X-Bugzilla-Who: jakub 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: ---
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-109741-4-3aJxALS0cO@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-109741-4@http.gcc.gnu.org/bugzilla/>
References: <bug-109741-4@http.gcc.gnu.org/bugzilla/>
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: <gcc-bugs.sourceware.org>

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D109741

--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #11)
> > Perhaps it should at configure time check if such alignment is possible=
 and
> > otherwise simply don't align it beyond mutex natural alignment?
>=20
> Agreed.

We could as well for those arches use just larger unaligned buffer and align
manually.=