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//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03, c++11, c++14, c++17
// UNSUPPORTED: libcpp-has-no-incomplete-ranges
// class std::ranges::subrange;
// Test the example from LWG 3470,
// qualification conversions in __convertible_to_non_slicing
#include <ranges>
#include <cassert>
#include "test_macros.h"
constexpr bool test()
{
// The example from LWG3470, using implicit conversion.
int a[3] = { 1, 2, 3 };
int* b[3] = { &a[2], &a[0], &a[1] };
std::ranges::subrange<const int* const*> c = b;
assert(c.begin() == b + 0);
assert(c.end() == b + 3);
// Also test CTAD and a subrange-to-subrange conversion.
std::same_as<std::ranges::subrange<int**>> auto d = std::ranges::subrange(b);
assert(d.begin() == b + 0);
assert(d.end() == b + 3);
std::ranges::subrange<const int* const*> e = d;
assert(e.begin() == b + 0);
assert(e.end() == b + 3);
return true;
}
int main(int, char**)
{
test();
static_assert(test());
return 0;
}
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