b8cb1dc9ea
When we ship LLVM 16, <ranges> won't be considered experimental anymore. We might as well do this sooner rather than later. Differential Revision: https://reviews.llvm.org/D132151
49 lines
1.3 KiB
C++
49 lines
1.3 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// UNSUPPORTED: c++03, c++11, c++14, c++17
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// single_view() requires default_initializable<T> = default;
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#include <ranges>
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#include <cassert>
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#include "test_macros.h"
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struct BigType { char buffer[64] = {10}; };
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template<bool DefaultCtorEnabled>
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struct IsDefaultConstructible {
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IsDefaultConstructible() requires DefaultCtorEnabled = default;
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};
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constexpr bool test() {
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static_assert( std::default_initializable<std::ranges::single_view<IsDefaultConstructible<true>>>);
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static_assert(!std::default_initializable<std::ranges::single_view<IsDefaultConstructible<false>>>);
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{
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std::ranges::single_view<BigType> sv;
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assert(sv.data()->buffer[0] == 10);
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assert(sv.size() == 1);
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}
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{
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const std::ranges::single_view<BigType> sv;
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assert(sv.data()->buffer[0] == 10);
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assert(sv.size() == 1);
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}
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return true;
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}
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int main(int, char**) {
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test();
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static_assert(test());
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return 0;
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}
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