1 // RUN: %clang_cc1 -fsyntax-only -verify %s 2 // RUN: %clang_cc1 -std=c++11 -fsyntax-only -verify %s -DCPP11 3 // RUN: %clang_cc1 -std=c++17 -fsyntax-only -verify %s -DCPP17 4 5 // There is no semantic difference between class and typename in a 6 // template-parameter. typename followed by an unqualified-id names a 7 // template type parameter. 8 template<class T> struct X; 9 template<typename T> struct X; 10 11 // typename followed by a qualified-id denotes the type in a non-type 12 // parameter-declaration. 13 template<typename T, typename T::type Value> struct Y0; 14 template<typename T, typename X<T>::type Value> struct Y1; 15 template<typename T typename U> struct Y2; // expected-error{{expected ',' or '>'}} 16 template<typename T U> struct Y3; // expected-error{{expected a qualified name after 'typename'}} expected-error{{expected ',' or '>'}} 17 template<typedef T typename U> struct Y4; // expected-error{{expected template parameter}} expected-note {{did you mean to use 'typename'?}} expected-error{{expected ',' or '>'}} 18 19 // A storage class shall not be specified in a template-parameter declaration. 20 template<static int Value> struct Z; //expected-error{{invalid declaration specifier}} 21 template<typedef int Value> struct Z0; //expected-error{{invalid declaration specifier}} 22 template<extern inline int Value> struct Z1; //expected-error2{{invalid declaration specifier}} 23 template<virtual int Value> struct Z2; //expected-error{{invalid declaration specifier}} 24 template<explicit int Value> struct Z3; //expected-error{{invalid declaration specifier}} 25 template<inline int Value> struct Z4; //expected-error{{invalid declaration specifier}} 26 template<extern int> struct Z5; //expected-error{{invalid declaration specifier}} 27 template<static int> struct Z6; //expected-error{{invalid declaration specifier}} 28 template<explicit int Value> struct Z7; //expected-error{{invalid declaration specifier}} 29 template<mutable int> struct Z8; //expected-error{{invalid declaration specifier}} 30 31 template<const int> struct Z9; // OK 32 template<volatile int> struct Z10; // OK 33 34 35 36 #ifdef CPP11 37 template<thread_local int> struct Z11; //expected-error{{invalid declaration specifier}} 38 template<constexpr int> struct Z12; //expected-error{{invalid declaration specifier}} 39 40 #endif 41 42 #ifdef CPP17 43 template<auto> struct Z13; // OK 44 #endif 45 46 // Make sure that we properly disambiguate non-type template parameters that 47 // start with 'class'. 48 class X1 { }; 49 template<class X1 *xptr> struct X2 { }; 50 51 // FIXME: add the example from p2 52