20 #define IS_KEYWORD(NAME) _Static_assert(!__is_identifier(NAME), #NAME)  argument
21 #define NOT_KEYWORD(NAME) _Static_assert(__is_identifier(NAME), #NAME)  argument
22 #define IS_TYPE(NAME) void is_##NAME##_type() { int f(NAME); }  argument
25 #define CXX20_KEYWORD(NAME)  IS_KEYWORD(NAME)  argument
27 #define CXX20_KEYWORD(NAME)  NOT_KEYWORD(NAME)  argument
31 #define DECLSPEC_KEYWORD(NAME)  IS_KEYWORD(NAME)  argument
33 #define DECLSPEC_KEYWORD(NAME)  NOT_KEYWORD(NAME)  argument
37 #define CXX11_KEYWORD(NAME)  IS_KEYWORD(NAME)  argument
38 #define CXX11_TYPE(NAME)     IS_TYPE(NAME)  argument
40 #define CXX11_KEYWORD(NAME)  NOT_KEYWORD(NAME)  argument
41 #define CXX11_TYPE(NAME)  argument