31cbe0f240
C++98 and C++03 are effectively aliases as far as Clang is concerned. As such, allowing both std=c++98 and std=c++03 as Lit parameters is just slightly confusing, but provides no value. It's similar to allowing both std=c++17 and std=c++1z, which we don't do. This was discovered because we had an internal bot that ran the test suite under both c++98 AND c++03 -- one of which is redundant. Differential Revision: https://reviews.llvm.org/D80926
83 lines
2.2 KiB
C++
83 lines
2.2 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
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// <optional>
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// constexpr optional() noexcept;
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#include <optional>
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#include <type_traits>
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#include <cassert>
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#include "test_macros.h"
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#include "archetypes.h"
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using std::optional;
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template <class Opt>
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void
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test_constexpr()
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{
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static_assert(std::is_nothrow_default_constructible<Opt>::value, "");
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static_assert(std::is_trivially_destructible<Opt>::value, "");
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static_assert(std::is_trivially_destructible<typename Opt::value_type>::value, "");
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constexpr Opt opt;
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static_assert(static_cast<bool>(opt) == false, "");
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struct test_constexpr_ctor
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: public Opt
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{
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constexpr test_constexpr_ctor() {}
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};
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}
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template <class Opt>
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void
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test()
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{
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static_assert(std::is_nothrow_default_constructible<Opt>::value, "");
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static_assert(!std::is_trivially_destructible<Opt>::value, "");
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static_assert(!std::is_trivially_destructible<typename Opt::value_type>::value, "");
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{
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Opt opt;
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assert(static_cast<bool>(opt) == false);
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}
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{
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const Opt opt;
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assert(static_cast<bool>(opt) == false);
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}
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struct test_constexpr_ctor
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: public Opt
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{
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constexpr test_constexpr_ctor() {}
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};
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}
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int main(int, char**)
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{
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test_constexpr<optional<int>>();
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test_constexpr<optional<int*>>();
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test_constexpr<optional<ImplicitTypes::NoCtors>>();
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test_constexpr<optional<NonTrivialTypes::NoCtors>>();
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test_constexpr<optional<NonConstexprTypes::NoCtors>>();
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test<optional<NonLiteralTypes::NoCtors>>();
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// EXTENSIONS
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#if defined(_LIBCPP_VERSION) && 0 // FIXME these extensions are currently disabled.
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test_constexpr<optional<int&>>();
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test_constexpr<optional<const int&>>();
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test_constexpr<optional<int&>>();
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test_constexpr<optional<NonLiteralTypes::NoCtors&>>();
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test_constexpr<optional<NonLiteralTypes::NoCtors&&>>();
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#endif
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return 0;
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}
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