09e3a36058
This patch adds a large number of missing includes in the libc++ headers and the test suite. Those were found as part of the effort to move towards a mostly monolithic top-level std module.
81 lines
2.3 KiB
C++
81 lines
2.3 KiB
C++
//
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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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// XFAIL: !has-64-bit-atomics
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// integral-type operator+=(integral-type) const noexcept;
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// floating-point-type operator+=(floating-point-type) const noexcept;
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// T* operator+=(difference_type) const noexcept;
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#include <atomic>
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#include <cassert>
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#include <concepts>
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#include <type_traits>
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#include <utility>
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#include "atomic_helpers.h"
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#include "test_helper.h"
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#include "test_macros.h"
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template <typename T>
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concept has_operator_plus_equals = requires { std::declval<T const>() += std::declval<T>(); };
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template <typename T>
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struct TestDoesNotHaveOperatorPlusEquals {
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void operator()() const { static_assert(!has_operator_plus_equals<std::atomic_ref<T>>); }
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};
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template <typename T>
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struct TestOperatorPlusEquals {
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void operator()() const {
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if constexpr (std::is_arithmetic_v<T>) {
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T x(T(1));
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std::atomic_ref<T> const a(x);
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std::same_as<T> decltype(auto) y = (a += T(2));
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assert(y == T(3));
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assert(x == T(3));
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ASSERT_NOEXCEPT(a += T(0));
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} else if constexpr (std::is_pointer_v<T>) {
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using U = std::remove_pointer_t<T>;
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U t[9] = {};
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T p{&t[1]};
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std::atomic_ref<T> const a(p);
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std::same_as<T> decltype(auto) y = (a += 2);
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assert(y == &t[3]);
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assert(a == &t[3]);
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ASSERT_NOEXCEPT(a += 0);
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} else {
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static_assert(std::is_void_v<T>);
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}
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// memory_order::seq_cst
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{
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auto plus_equals = [](std::atomic_ref<T> const& x, T old_val, T new_val) { x += (new_val - old_val); };
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auto load = [](std::atomic_ref<T> const& x) { return x.load(); };
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test_seq_cst<T>(plus_equals, load);
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}
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}
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};
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int main(int, char**) {
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TestEachIntegralType<TestOperatorPlusEquals>()();
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TestOperatorPlusEquals<float>()();
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TestOperatorPlusEquals<double>()();
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TestEachPointerType<TestOperatorPlusEquals>()();
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TestDoesNotHaveOperatorPlusEquals<bool>()();
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TestDoesNotHaveOperatorPlusEquals<UserAtomicType>()();
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TestDoesNotHaveOperatorPlusEquals<LargeUserAtomicType>()();
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return 0;
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}
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