cxx/test/utilities/meta/meta.rel/is_same.pass.cpp

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//===----------------------------------------------------------------------===// // // The LLVM Compiler Infrastructure // // This file is distributed under the University of Illinois Open Source // License. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// // type_traits // is_same #include <type_traits> template <class T, class U> void test_is_same() { static_assert((std::is_same<T, U>::value), ""); static_assert((!std::is_same<const T, U>::value), ""); static_assert((!std::is_same<T, const U>::value), ""); static_assert((std::is_same<const T, const U>::value), ""); } template <class T, class U> void test_is_same_ref() { static_assert((std::is_same<T, U>::value), ""); static_assert((std::is_same<const T, U>::value), ""); static_assert((std::is_same<T, const U>::value), ""); static_assert((std::is_same<const T, const U>::value), ""); } template <class T, class U> void test_is_not_same() { static_assert((!std::is_same<T, U>::value), ""); } class Class { public: ~Class(); }; int main() { test_is_same<int, int>(); test_is_same<void, void>(); test_is_same<Class, Class>(); test_is_same<int*, int*>(); test_is_same_ref<int&, int&>(); test_is_not_same<int, void>(); test_is_not_same<void, Class>(); test_is_not_same<Class, int*>(); test_is_not_same<int*, int&>(); test_is_not_same<int&, int>(); }