From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 1698) id 2811A386103C; Thu, 30 Jul 2020 19:54:21 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 2811A386103C DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1596138861; bh=VEnf6DcVcPbjKLjR699XMwtBe7zy6vd+FnJBK8Bge0M=; h=From:To:Subject:Date:From; b=AfhnXWLmpOWYCOlp1Wy2H/00iJdYoPtFER7upn5upeMIW6p6WxhsEgGKG8R4PCzWr Pu0H1YPurRrQXRdVBzcdbeopfNscZ7OMB+ZMYyYiAYRIk2OdW+1zyzkIeuLxtfSMDW FYz/d2kHHCaNYRPYkTG6AYFJb/FIF5Y00h5bFcu4= Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit From: Iain D Sandoe To: gcc-cvs@gcc.gnu.org, libstdc++-cvs@gcc.gnu.org Subject: [gcc/devel/c++-coroutines] libstdc++: cv bool can't be an integer-like type (LWG 3467) X-Act-Checkin: gcc X-Git-Author: Jonathan Wakely X-Git-Refname: refs/heads/devel/c++-coroutines X-Git-Oldrev: eeb45f8a41f7214d86824444151bff7c7f00b06a X-Git-Newrev: 9e67b4356efe4291fdb170fb116092f4ed9d2f05 Message-Id: <20200730195421.2811A386103C@sourceware.org> Date: Thu, 30 Jul 2020 19:54:21 +0000 (GMT) X-BeenThere: libstdc++-cvs@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libstdc++-cvs mailing list List-Unsubscribe: , List-Archive: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 30 Jul 2020 19:54:21 -0000 https://gcc.gnu.org/g:9e67b4356efe4291fdb170fb116092f4ed9d2f05 commit 9e67b4356efe4291fdb170fb116092f4ed9d2f05 Author: Jonathan Wakely Date: Thu Jul 30 12:23:55 2020 +0100 libstdc++: cv bool can't be an integer-like type (LWG 3467) libstdc++-v3/ChangeLog: * include/bits/iterator_concepts.h (__detail::__cv_bool): New helper concept. (__detail::__integral_nonbool): Likewise. (__detail::__is_integer_like): Use __integral_nonbool. * testsuite/std/ranges/access/lwg3467.cc: New test. Diff: --- libstdc++-v3/include/bits/iterator_concepts.h | 8 +++++- .../testsuite/std/ranges/access/lwg3467.cc | 33 ++++++++++++++++++++++ 2 files changed, 40 insertions(+), 1 deletion(-) diff --git a/libstdc++-v3/include/bits/iterator_concepts.h b/libstdc++-v3/include/bits/iterator_concepts.h index e56abe2be6c..aad6c2dcd91 100644 --- a/libstdc++-v3/include/bits/iterator_concepts.h +++ b/libstdc++-v3/include/bits/iterator_concepts.h @@ -520,7 +520,13 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION #endif template - concept __is_integer_like = integral<_Tp> + concept __cv_bool = same_as; + + template + concept __integral_nonbool = integral<_Tp> && !__cv_bool<_Tp>; + + template + concept __is_integer_like = __integral_nonbool<_Tp> || same_as<_Tp, __max_diff_type> || same_as<_Tp, __max_size_type>; template diff --git a/libstdc++-v3/testsuite/std/ranges/access/lwg3467.cc b/libstdc++-v3/testsuite/std/ranges/access/lwg3467.cc new file mode 100644 index 00000000000..23418b476a0 --- /dev/null +++ b/libstdc++-v3/testsuite/std/ranges/access/lwg3467.cc @@ -0,0 +1,33 @@ +// Copyright (C) 2020 Free Software Foundation, Inc. +// +// This file is part of the GNU ISO C++ Library. This library is free +// software; you can redistribute it and/or modify it under the +// terms of the GNU General Public License as published by the +// Free Software Foundation; either version 3, or (at your option) +// any later version. + +// This library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. + +// You should have received a copy of the GNU General Public License along +// with this library; see the file COPYING3. If not see +// . + +// { dg-options "-std=gnu++2a" } +// { dg-do compile { target c++2a } } + +// LWG 3467. bool can't be an integer-like type + +#include + +struct R +{ + bool size() const; +}; + +template +concept sized = requires(T t) { std::ranges::size(t); }; + +static_assert( !sized );