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77 lines
1.9 KiB
C++
77 lines
1.9 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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// type_traits
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// void_t
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// UNSUPPORTED: c++98, c++03, c++11, c++14
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// XFAIL: gcc-5.1, gcc-5.2
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#include <type_traits>
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#include "test_macros.h"
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template <class T>
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void test1()
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{
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ASSERT_SAME_TYPE(void, std::void_t<T>);
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ASSERT_SAME_TYPE(void, std::void_t<const T>);
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ASSERT_SAME_TYPE(void, std::void_t<volatile T>);
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ASSERT_SAME_TYPE(void, std::void_t<const volatile T>);
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}
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template <class T, class U>
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void test2()
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{
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ASSERT_SAME_TYPE(void, std::void_t<T, U>);
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ASSERT_SAME_TYPE(void, std::void_t<const T, U>);
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ASSERT_SAME_TYPE(void, std::void_t<volatile T, U>);
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ASSERT_SAME_TYPE(void, std::void_t<const volatile T, U>);
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ASSERT_SAME_TYPE(void, std::void_t<U, T>);
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ASSERT_SAME_TYPE(void, std::void_t<U, const T>);
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ASSERT_SAME_TYPE(void, std::void_t<U, volatile T>);
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ASSERT_SAME_TYPE(void, std::void_t<U, const volatile T>);
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ASSERT_SAME_TYPE(void, std::void_t<T, const U>);
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ASSERT_SAME_TYPE(void, std::void_t<const T, const U>);
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ASSERT_SAME_TYPE(void, std::void_t<volatile T, const U>);
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ASSERT_SAME_TYPE(void, std::void_t<const volatile T, const U>);
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}
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class Class
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{
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public:
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~Class();
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};
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int main(int, char**)
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{
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ASSERT_SAME_TYPE(void, std::void_t<>);
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test1<void>();
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test1<int>();
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test1<double>();
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test1<int&>();
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test1<Class>();
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test1<Class[]>();
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test1<Class[5]>();
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test2<void, int>();
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test2<double, int>();
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test2<int&, int>();
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test2<Class&, bool>();
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test2<void *, int&>();
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ASSERT_SAME_TYPE(void, std::void_t<int, double const &, Class, volatile int[], void>);
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return 0;
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}
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