| 1 | // RUN: %clang_cc1 -fsyntax-only -verify %s |
| 2 | // RUN: %clang_cc1 -fsyntax-only -verify -std=c++03 %s |
| 3 | // RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s |
| 4 | // PR5336 |
| 5 | template<typename FromCl> |
| 6 | struct isa_impl_cl { |
| 7 | template<class ToCl> |
| 8 | static void isa(const FromCl &Val) { } |
| 9 | }; |
| 10 | |
| 11 | template<class X, class Y> |
| 12 | void isa(const Y &Val) { return isa_impl_cl<Y>::template isa<X>(Val); } |
| 13 | |
| 14 | class Value; |
| 15 | void f0(const Value &Val) { isa<Value>(Val); } |
| 16 | |
| 17 | // Implicit template-ids. |
| 18 | template<typename T> |
| 19 | struct X0 { |
| 20 | template<typename U> |
| 21 | void f1(); |
| 22 | |
| 23 | template<typename U> |
| 24 | void f2(U) { |
| 25 | f1<U>(); |
| 26 | } |
| 27 | }; |
| 28 | |
| 29 | void test_X0_int(X0<int> xi, float f) { |
| 30 | xi.f2(f); |
| 31 | } |
| 32 | |
| 33 | // Not template-id expressions, but they almost look like it. |
| 34 | template<typename F> |
| 35 | struct Y { |
| 36 | Y(const F&); |
| 37 | }; |
| 38 | |
| 39 | template<int I> |
| 40 | struct X { |
| 41 | X(int, int); |
| 42 | void f() { |
| 43 | Y<X<I> >(X<I>(0, 0)); |
| 44 | Y<X<I> >(::X<I>(0, 0)); |
| 45 | } |
| 46 | }; |
| 47 | |
| 48 | template struct X<3>; |
| 49 | |
| 50 | // 'template' as a disambiguator. |
| 51 | // PR7030 |
| 52 | struct Y0 { |
| 53 | template<typename U> |
| 54 | void f1(U); |
| 55 | |
| 56 | template<typename U> |
| 57 | static void f2(U); |
| 58 | |
| 59 | void f3(int); // expected-note 2{{declared as a non-template here}} |
| 60 | |
| 61 | static int f4(int); |
| 62 | template<typename U> |
| 63 | static void f4(U); |
| 64 | |
| 65 | template<typename U> |
| 66 | void f() { |
| 67 | Y0::template f1<U>(0); |
| 68 | Y0::template f1(0); |
| 69 | this->template f1(0); |
| 70 | |
| 71 | Y0::template f2<U>(0); |
| 72 | Y0::template f2(0); |
| 73 | |
| 74 | Y0::template f3(0); // expected-error {{'f3' following the 'template' keyword does not refer to a template}} |
| 75 | Y0::template f3(); // expected-error {{'f3' following the 'template' keyword does not refer to a template}} |
| 76 | |
| 77 | int x; |
| 78 | x = Y0::f4(0); |
| 79 | x = Y0::f4<int>(0); // expected-error {{assigning to 'int' from incompatible type 'void'}} |
| 80 | x = Y0::template f4(0); // expected-error {{assigning to 'int' from incompatible type 'void'}} |
| 81 | |
| 82 | x = this->f4(0); |
| 83 | x = this->f4<int>(0); // expected-error {{assigning to 'int' from incompatible type 'void'}} |
| 84 | x = this->template f4(0); // expected-error {{assigning to 'int' from incompatible type 'void'}} |
| 85 | } |
| 86 | }; |
| 87 | |
| 88 | template<typename U> void Y0 |
| 89 | ::template // expected-error {{expected unqualified-id}} |
| 90 | f1(U) {} |
| 91 | |
| 92 | // FIXME: error recovery is awful without this. |
| 93 | ; |
| 94 | |
| 95 | template<typename T> |
| 96 | struct Y1 { |
| 97 | template<typename U> |
| 98 | void f1(U); |
| 99 | |
| 100 | template<typename U> |
| 101 | static void f2(U); |
| 102 | |
| 103 | void f3(int); // expected-note 4{{declared as a non-template here}} |
| 104 | |
| 105 | static int f4(int); |
| 106 | template<typename U> |
| 107 | static void f4(U); |
| 108 | |
| 109 | template<typename U> |
| 110 | void f() { |
| 111 | Y1::template f1<U>(0); |
| 112 | Y1::template f1(0); |
| 113 | this->template f1(0); |
| 114 | |
| 115 | Y1::template f2<U>(0); |
| 116 | Y1::template f2(0); |
| 117 | |
| 118 | Y1::template f3(0); // expected-error {{'f3' following the 'template' keyword does not refer to a template}} |
| 119 | Y1::template f3(); // expected-error {{'f3' following the 'template' keyword does not refer to a template}} |
| 120 | |
| 121 | int x; |
| 122 | x = Y1::f4(0); |
| 123 | x = Y1::f4<int>(0); // expected-error {{assigning to 'int' from incompatible type 'void'}} |
| 124 | x = Y1::template f4(0); // expected-error {{assigning to 'int' from incompatible type 'void'}} |
| 125 | |
| 126 | x = this->f4(0); |
| 127 | x = this->f4<int>(0); // expected-error {{assigning to 'int' from incompatible type 'void'}} |
| 128 | x = this->template f4(0); // expected-error {{assigning to 'int' from incompatible type 'void'}} |
| 129 | } |
| 130 | }; |
| 131 | |
| 132 | void use_Y1(Y1<int> y1) { y1.f<int>(); } // expected-note {{in instantiation of}} |
| 133 | |
| 134 | template<typename T> |
| 135 | struct Y2 : Y1<T> { |
| 136 | typedef ::Y1<T> Y1; |
| 137 | |
| 138 | template<typename U> |
| 139 | void f(Y1 *p) { |
| 140 | Y1::template f1<U>(0); |
| 141 | Y1::template f1(0); |
| 142 | p->template f1(0); |
| 143 | |
| 144 | Y1::template f2<U>(0); |
| 145 | Y1::template f2(0); |
| 146 | |
| 147 | Y1::template f3(0); // expected-error {{'f3' following the 'template' keyword does not refer to a template}} |
| 148 | Y1::template f3(); // expected-error {{'f3' following the 'template' keyword does not refer to a template}} |
| 149 | |
| 150 | int x; |
| 151 | x = Y1::f4(0); |
| 152 | x = Y1::f4<int>(0); // expected-error {{use 'template'}} expected-error {{assigning to 'int' from incompatible type 'void'}} |
| 153 | x = Y1::template f4(0); // expected-error {{assigning to 'int' from incompatible type 'void'}} |
| 154 | |
| 155 | x = p->f4(0); |
| 156 | x = p->f4<int>(0); // expected-error {{assigning to 'int' from incompatible type 'void'}} expected-error {{use 'template'}} |
| 157 | x = p->template f4(0); // expected-error {{assigning to 'int' from incompatible type 'void'}} |
| 158 | } |
| 159 | }; |
| 160 | |
| 161 | void use_Y2(Y2<int> y2) { y2.f<int>(0); } // expected-note {{in instantiation of}} |
| 162 | |
| 163 | struct A { |
| 164 | template<int I> |
| 165 | struct B { |
| 166 | static void b1(); // expected-note {{declared as a non-template here}} |
| 167 | }; |
| 168 | }; |
| 169 | |
| 170 | template<int I> |
| 171 | void f5() { |
| 172 | A::template B<I>::template b1(); // expected-error {{'b1' following the 'template' keyword does not refer to a template}} |
| 173 | } |
| 174 | |
| 175 | template void f5<0>(); // expected-note {{in instantiation of function template specialization 'f5<0>' requested here}} |
| 176 | |
| 177 | class C {}; |
| 178 | template <template <typename> class D> |
| 179 | class E { |
| 180 | template class D<C>; // expected-error {{expected '<' after 'template'}} |
| 181 | template<> class D<C>; // expected-error {{cannot specialize a template template parameter}} |
| 182 | friend class D<C>; // expected-error {{type alias template 'D' cannot be referenced with a class specifier}} |
| 183 | }; |
| 184 | #if __cplusplus <= 199711L |
| 185 | // expected-warning@+2 {{extension}} |
| 186 | #endif |
| 187 | template<typename T> using D = int; // expected-note {{declared here}} |
| 188 | E<D> ed; // expected-note {{instantiation of}} |
| 189 | |