e39f4b996e
This patch goes through and enables C++11 and C++14 features for newer GCC's. The main changes are: 1. Turn on variable templates. (Uses __cpp_variable_templates) 2. Assert atomic<Tp> is trivially copyable (Uses _GNUC_VER >= 501). 3. Turn on trailing return support for GCC. (Uses _GNUC_VER >= 404) 4. XFAIL void_t test for GCC 5.1 and 5.2. Fixed in GCC 6. git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@255585 91177308-0d34-0410-b5e6-96231b3b80d8
69 lines
2.0 KiB
C++
69 lines
2.0 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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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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template <class T>
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void test1()
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{
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static_assert( std::is_same<void, std::void_t<T>>::value, "");
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static_assert( std::is_same<void, std::void_t<const T>>::value, "");
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static_assert( std::is_same<void, std::void_t<volatile T>>::value, "");
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static_assert( std::is_same<void, std::void_t<const volatile T>>::value, "");
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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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static_assert( std::is_same<void, std::void_t<T, U>>::value, "");
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static_assert( std::is_same<void, std::void_t<const T, U>>::value, "");
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static_assert( std::is_same<void, std::void_t<volatile T, U>>::value, "");
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static_assert( std::is_same<void, std::void_t<const volatile T, U>>::value, "");
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static_assert( std::is_same<void, std::void_t<T, const U>>::value, "");
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static_assert( std::is_same<void, std::void_t<const T, const U>>::value, "");
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static_assert( std::is_same<void, std::void_t<volatile T, const U>>::value, "");
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static_assert( std::is_same<void, std::void_t<const volatile T, const U>>::value, "");
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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()
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{
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static_assert( std::is_same<void, std::void_t<>>::value, "");
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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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static_assert( std::is_same<void, std::void_t<int, double const &, Class, volatile int[], void>>::value, "");
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}
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