| // RUN: %clang_cc1 -fsyntax-only -verify %s |
| // RUN: %clang_cc1 -fsyntax-only -verify -std=c++03 %s |
| // RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s |
| // PR5336 |
| template<typename FromCl> |
| struct isa_impl_cl { |
| template<class ToCl> |
| static void isa(const FromCl &Val) { } |
| }; |
| |
| template<class X, class Y> |
| void isa(const Y &Val) { return isa_impl_cl<Y>::template isa<X>(Val); } |
| |
| class Value; |
| void f0(const Value &Val) { isa<Value>(Val); } |
| |
| // Implicit template-ids. |
| template<typename T> |
| struct X0 { |
| template<typename U> |
| void f1(); |
| |
| template<typename U> |
| void f2(U) { |
| f1<U>(); |
| } |
| }; |
| |
| void test_X0_int(X0<int> xi, float f) { |
| xi.f2(f); |
| } |
| |
| // Not template-id expressions, but they almost look like it. |
| template<typename F> |
| struct Y { |
| Y(const F&); |
| }; |
| |
| template<int I> |
| struct X { |
| X(int, int); |
| void f() { |
| Y<X<I> >(X<I>(0, 0)); |
| Y<X<I> >(::X<I>(0, 0)); |
| } |
| }; |
| |
| template struct X<3>; |
| |
| // 'template' as a disambiguator. |
| // PR7030 |
| struct Y0 { |
| template<typename U> |
| void f1(U); |
| |
| template<typename U> |
| static void f2(U); |
| |
| void f3(int); // expected-note 2{{declared as a non-template here}} |
| |
| static int f4(int); |
| template<typename U> |
| static void f4(U); |
| |
| template<typename U> |
| void f() { |
| Y0::template f1<U>(0); |
| Y0::template f1(0); |
| this->template f1(0); |
| |
| Y0::template f2<U>(0); |
| Y0::template f2(0); |
| |
| Y0::template f3(0); // expected-error {{'f3' following the 'template' keyword does not refer to a template}} |
| Y0::template f3(); // expected-error {{'f3' following the 'template' keyword does not refer to a template}} |
| |
| int x; |
| x = Y0::f4(0); |
| x = Y0::f4<int>(0); // expected-error {{assigning to 'int' from incompatible type 'void'}} |
| x = Y0::template f4(0); // expected-error {{assigning to 'int' from incompatible type 'void'}} |
| |
| x = this->f4(0); |
| x = this->f4<int>(0); // expected-error {{assigning to 'int' from incompatible type 'void'}} |
| x = this->template f4(0); // expected-error {{assigning to 'int' from incompatible type 'void'}} |
| } |
| }; |
| |
| template<typename U> void Y0 |
| ::template // expected-error {{expected unqualified-id}} |
| f1(U) {} |
| |
| // FIXME: error recovery is awful without this. |
| ; |
| |
| template<typename T> |
| struct Y1 { |
| template<typename U> |
| void f1(U); |
| |
| template<typename U> |
| static void f2(U); |
| |
| void f3(int); // expected-note 4{{declared as a non-template here}} |
| |
| static int f4(int); |
| template<typename U> |
| static void f4(U); |
| |
| template<typename U> |
| void f() { |
| Y1::template f1<U>(0); |
| Y1::template f1(0); |
| this->template f1(0); |
| |
| Y1::template f2<U>(0); |
| Y1::template f2(0); |
| |
| Y1::template f3(0); // expected-error {{'f3' following the 'template' keyword does not refer to a template}} |
| Y1::template f3(); // expected-error {{'f3' following the 'template' keyword does not refer to a template}} |
| |
| int x; |
| x = Y1::f4(0); |
| x = Y1::f4<int>(0); // expected-error {{assigning to 'int' from incompatible type 'void'}} |
| x = Y1::template f4(0); // expected-error {{assigning to 'int' from incompatible type 'void'}} |
| |
| x = this->f4(0); |
| x = this->f4<int>(0); // expected-error {{assigning to 'int' from incompatible type 'void'}} |
| x = this->template f4(0); // expected-error {{assigning to 'int' from incompatible type 'void'}} |
| } |
| }; |
| |
| void use_Y1(Y1<int> y1) { y1.f<int>(); } // expected-note {{in instantiation of}} |
| |
| template<typename T> |
| struct Y2 : Y1<T> { |
| typedef ::Y1<T> Y1; |
| |
| template<typename U> |
| void f(Y1 *p) { |
| Y1::template f1<U>(0); |
| Y1::template f1(0); |
| p->template f1(0); |
| |
| Y1::template f2<U>(0); |
| Y1::template f2(0); |
| |
| Y1::template f3(0); // expected-error {{'f3' following the 'template' keyword does not refer to a template}} |
| Y1::template f3(); // expected-error {{'f3' following the 'template' keyword does not refer to a template}} |
| |
| int x; |
| x = Y1::f4(0); |
| x = Y1::f4<int>(0); // expected-error {{use 'template'}} expected-error {{assigning to 'int' from incompatible type 'void'}} |
| x = Y1::template f4(0); // expected-error {{assigning to 'int' from incompatible type 'void'}} |
| |
| x = p->f4(0); |
| x = p->f4<int>(0); // expected-error {{assigning to 'int' from incompatible type 'void'}} expected-error {{use 'template'}} |
| x = p->template f4(0); // expected-error {{assigning to 'int' from incompatible type 'void'}} |
| } |
| }; |
| |
| void use_Y2(Y2<int> y2) { y2.f<int>(0); } // expected-note {{in instantiation of}} |
| |
| struct A { |
| template<int I> |
| struct B { |
| static void b1(); // expected-note {{declared as a non-template here}} |
| }; |
| }; |
| |
| template<int I> |
| void f5() { |
| A::template B<I>::template b1(); // expected-error {{'b1' following the 'template' keyword does not refer to a template}} |
| } |
| |
| template void f5<0>(); // expected-note {{in instantiation of function template specialization 'f5<0>' requested here}} |
| |
| class C {}; |
| template <template <typename> class D> |
| class E { |
| template class D<C>; // expected-error {{expected '<' after 'template'}} |
| template<> class D<C>; // expected-error {{cannot specialize a template template parameter}} |
| friend class D<C>; // expected-error {{type alias template 'D' cannot be referenced with a class specifier}} |
| }; |
| #if __cplusplus <= 199711L |
| // expected-warning@+2 {{extension}} |
| #endif |
| template<typename T> using D = int; // expected-note {{declared here}} |
| E<D> ed; // expected-note {{instantiation of}} |