cxx/test/utilities/meta/meta.unary/meta.unary.prop/is_abstract.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_abstract #include <type_traits> template <class T> void test_is_abstract() { static_assert( std::is_abstract<T>::value, ""); static_assert( std::is_abstract<const T>::value, ""); static_assert( std::is_abstract<volatile T>::value, ""); static_assert( std::is_abstract<const volatile T>::value, ""); } template <class T> void test_is_not_abstract() { static_assert(!std::is_abstract<T>::value, ""); static_assert(!std::is_abstract<const T>::value, ""); static_assert(!std::is_abstract<volatile T>::value, ""); static_assert(!std::is_abstract<const volatile T>::value, ""); } class Empty { }; class NotEmpty { virtual ~NotEmpty(); }; union Union {}; struct bit_zero { int : 0; }; class Abstract { virtual ~Abstract() = 0; }; int main() { test_is_not_abstract<void>(); test_is_not_abstract<int&>(); test_is_not_abstract<int>(); test_is_not_abstract<double>(); test_is_not_abstract<int*>(); test_is_not_abstract<const int*>(); test_is_not_abstract<char[3]>(); test_is_not_abstract<char[3]>(); test_is_not_abstract<Union>(); test_is_not_abstract<Empty>(); test_is_not_abstract<bit_zero>(); test_is_not_abstract<NotEmpty>(); test_is_abstract<Abstract>(); }