1 //===----------------------------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 // type_traits 11 12 // underlying_type 13 14 #include <type_traits> 15 #include <climits> 16 17 int main() 18 { 19 enum E { V = INT_MIN }; 20 enum F { W = UINT_MAX }; 21 22 static_assert((std::is_same<std::underlying_type<E>::type, int>::value), 23 "E has the wrong underlying type"); 24 static_assert((std::is_same<std::underlying_type<F>::type, unsigned>::value), 25 "F has the wrong underlying type"); 26 27 #if __has_feature(cxx_strong_enums) 28 enum G : char { }; 29 30 static_assert((std::is_same<std::underlying_type<G>::type, char>::value), 31 "G has the wrong underlying type"); 32 #endif // __has_feature(cxx_strong_enums) 33 } 34
