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Test for C++20 p0858 - ConstexprIterator requirements. 

2019-06-08  Edward Smith-Rowland  <3dw4rd@verizon.net>

	Test for C++20 p0858 - ConstexprIterator requirements.
	* testsuite/21_strings/basic_string_view/requirements/constexpr_iter.cc:
	New test.
	* testsuite/23_containers/array/requirements/constexpr_iter.cc:
	New test.

From-SVN: r272085
This commit is contained in:
Edward Smith-Rowland 2019-06-08 22:18:36 +00:00 committed by Edward Smith-Rowland
parent 8e73afcf40
commit 79f31e3d18
3 changed files with 91 additions and 0 deletions
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8
libstdc++-v3/ChangeLog
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2019-06-08 Edward Smith-Rowland <3dw4rd@verizon.net>
Test for C++20 p0858 - ConstexprIterator requirements.
* testsuite/21_strings/basic_string_view/requirements/constexpr_iter.cc:
New test.
* testsuite/23_containers/array/requirements/constexpr_iter.cc:
New test.
2019-06-07 Thomas Rodgers <trodgers@redhat.com>
Rename PSTL macro's consistent with libstdc++ (and llvm upstream

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libstdc++-v3/testsuite/21_strings/basic_string_view/requirements/constexpr_iter.cc Normal file
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// { dg-options "-std=gnu++2a" }
// { dg-do compile { target c++2a } }
//
// Copyright (C) 2019 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
// <http://www.gnu.org/licenses/>.
#include <string_view>
#include <array>
constexpr char
test()
{
constexpr std::string_view hw("Hello, World!");
static_assert('H' == *hw.begin());
auto ch = hw[4];
static_assert('W' == *(hw.cbegin() + 7));
std::array<int, hw.size()> a2{{0,0,0,0,0,0,0,0,0,0,0,0,0}};
std::copy(hw.begin(), hw.end(), a2.begin());
return *(hw.cbegin() + 3);
}
void
run_test()
{
constexpr char ch = test();
}

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libstdc++-v3/testsuite/23_containers/array/requirements/constexpr_iter.cc Normal file
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// { dg-options "-std=gnu++2a" }
// { dg-do compile { target c++2a } }
//
// Copyright (C) 2019 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
// <http://www.gnu.org/licenses/>.
#include <array>
constexpr int
test()
{
constexpr std::array<int, 3> a1{{1, 2, 3}};
static_assert(1 == *a1.begin());
auto n = a1[0] * a1[1]* a1[2];
static_assert(1 == *a1.cbegin());
std::array<int, 3> a2{{0, 0, 0}};
std::copy(a1.begin(), a1.end(), a2.begin());
return n;
}
void
run_test()
{
constexpr int n = test();
}