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// { dg-do run { target c++17 } }
// { dg-options "-std=gnu++17" }
// Copyright (C) 2015-2018 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/>.
// 24.8, container access [iterator.container]
#include <iterator>
#include <vector>
#include <testsuite_hooks.h>
void
test01()
{
int i[42];
VERIFY(std::data(i) == i);
VERIFY(std::size(i) == 42);
VERIFY(!std::empty(i));
}
void
test02()
{
static constexpr int i[42]{};
constexpr auto d = std::data(i);
static_assert(d == i);
constexpr auto s = std::size(i);
static_assert(s == 42);
constexpr auto e = std::empty(i);
static_assert(!e);
}
void
test03()
{
std::initializer_list<int> il{1,2,3};
VERIFY(std::data(il) == il.begin());
VERIFY(std::size(il) == 3);
VERIFY(!std::empty(il));
std::initializer_list<int> il2{};
VERIFY(std::size(il2) == 0);
VERIFY(std::empty(il2));
static constexpr std::initializer_list<int> il3{1,2,3};
constexpr auto d = std::data(il3);
static_assert(d == il3.begin());
constexpr auto s = std::size(il3);
static_assert(s == 3);
constexpr auto e = std::empty(il3);
static_assert(!e);
}
void
test04()
{
std::vector<int> v{1,2,3};
VERIFY(std::data(v) == v.data());
VERIFY(std::size(v) == v.size());
VERIFY(!std::empty(v));
std::vector<int> v2{};
VERIFY(std::size(v2) == v2.size());
VERIFY(std::empty(v2));
}
int
main()
{
test01();
test02();
test03();
test04();
}
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