blob: e0ec3b8d176ebd9d812828c781fcf0f1f2d596fc [file] [log] [blame]
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// <memory>
// UNSUPPORTED: c++03, c++11, c++14, c++17
// template <class T> constexpr T* to_address(T* p) noexcept;
// template <class Ptr> constexpr auto to_address(const Ptr& p) noexcept;
#include <memory>
#include <array>
#include <cassert>
#include <span>
#include <string>
#include <string_view>
#include <valarray>
#include <vector>
#include "test_macros.h"
template<class C>
void test_container_iterators(C c)
{
const C& cc = c;
assert(std::to_address(c.begin()) == c.data());
assert(std::to_address(c.end()) == c.data() + c.size());
assert(std::to_address(cc.begin()) == cc.data());
assert(std::to_address(cc.end()) == cc.data() + cc.size());
}
void test_valarray_iterators()
{
std::valarray<int> v(100);
int *p = std::to_address(std::begin(v));
int *q = std::to_address(std::end(v));
assert(q - p == 100);
}
int main(int, char**) {
test_container_iterators(std::array<int, 3>());
test_container_iterators(std::vector<int>(3));
test_container_iterators(std::string("abc"));
test_container_iterators(std::string_view("abc"));
test_container_iterators(std::span<const char>("abc"));
test_valarray_iterators();
return 0;
}