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 9D9A63952036; Mon,  3 Jun 2024 19:38:16 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 9D9A63952036
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org;
	s=default; t=1717443498;
	bh=Be05PiQUv4tVW/v7AskSdjmcBnL56bKsLz+YzaM0F78=;
	h=From:To:Subject:Date:In-Reply-To:References:From;
	b=LBkf4wfQNKlBxfGI6KA27wuIw+nHTQGIt/hHs9Ucl5vqmsT23Pwtv9K5ciLTQ+hNO
	 9WIkWG+AJ+iEu4oSCprtAbysljiRPVdIQlpEIy4Ceq0RjUGR4/ksrRb4XlwQe8haCC
	 8X2CR908Jjn7cyFMpvErJLlQZc9p0KGlonVGVOSI=
From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/109849] suboptimal code for vector walking loop
Date: Mon, 03 Jun 2024 19:38:12 +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: missed-optimization
X-Bugzilla-Severity: normal
X-Bugzilla-Who: cvs-commit 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-109849-4-DKzixXUyRw@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-109849-4@http.gcc.gnu.org/bugzilla/>
References: <bug-109849-4@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=3D109849

--- Comment #36 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Francois Dumont <fdumont@gcc.gnu.org>:

https://gcc.gnu.org/g:0426be454448f8cfb9db21f4f669426afb7b57c8

commit r15-996-g0426be454448f8cfb9db21f4f669426afb7b57c8
Author: Fran=C3=A7ois Dumont <frs.dumont@gmail.com>
Date:   Sat Jun 1 22:17:19 2024 +0200

    libstdc++: Fix -Wstringop-overflow warning coming from std::vector
[PR109849]

    libstdc++-v3/ChangeLog:

            PR libstdc++/109849
            * include/bits/vector.tcc
            (std::vector<>::_M_range_insert(iterator, _FwdIt, _FwdIt,
            forward_iterator_tag))[__cplusplus < 201103L]: Add
__builtin_unreachable
            expression to tell the compiler that the allocated buffer is la=
rge
enough to
            receive current elements plus the elements of the range to inse=
rt.=