1 // RUN: %clang_cc1 -fsyntax-only -verify %s 2 3 template<typename MetaFun, typename T> 4 struct bind_metafun { 5 typedef typename MetaFun::template apply<T> type; 6 }; 7 8 struct add_pointer { 9 template<typename T> 10 struct apply { 11 typedef T* type; 12 }; 13 }; 14 15 int i; 16 // FIXME: if we make the declarator below a pointer (e.g., with *ip), 17 // the error message isn't so good because we don't get the handy 18 // 'aka' telling us that we're dealing with an int**. Should we fix 19 // getDesugaredType to dig through pointers and such? 20 bind_metafun<add_pointer, int>::type::type ip = &i; 21 bind_metafun<add_pointer, float>::type::type fp = &i; // expected-error{{cannot initialize a variable of type 'bind_metafun<add_pointer, float>::type::type' (aka 'float *') with an rvalue of type 'int *'}} 22 23 24 template<typename T> 25 struct extract_type_type { 26 typedef typename T::type::type t; 27 }; 28 29 double d; 30 extract_type_type<bind_metafun<add_pointer, double> >::t dp = &d; 31
