1 // RUN: %clang_cc1 -fsyntax-only -verify -std=c++98 %s 2 // RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s 3 struct X0 { 4 X0 f1(); 5 X0 f2(); 6 }; 7 8 template<typename T> 9 struct X1 { 10 X1<T>(int); 11 (X1<T>)(float); 12 X1 f2(); 13 X1 f2(int); 14 X1 f2(float); 15 }; 16 17 // Error recovery: out-of-line constructors whose names have template arguments. 18 template<typename T> X1<T>::X1<T>(int) { } // expected-error{{out-of-line constructor for 'X1' cannot have template arguments}} 19 template<typename T> (X1<T>::X1<T>)(float) { } // expected-error{{out-of-line constructor for 'X1' cannot have template arguments}} 20 21 // Error recovery: out-of-line constructor names intended to be types 22 X0::X0 X0::f1() { return X0(); } // expected-error{{qualified reference to 'X0' is a constructor name rather than a type wherever a constructor can be declared}} 23 24 struct X0::X0 X0::f2() { return X0(); } 25 26 template<typename T> X1<T>::X1<T> X1<T>::f2() { } // expected-error{{qualified reference to 'X1' is a constructor name rather than a template name wherever a constructor can be declared}} 27 template<typename T> X1<T>::X1<T> (X1<T>::f2)(int) { } // expected-error{{qualified reference to 'X1' is a constructor name rather than a template name wherever a constructor can be declared}} 28 template<typename T> struct X1<T>::X1<T> (X1<T>::f2)(float) { } 29 30 // We have a special case for lookup within using-declarations that are 31 // member-declarations: foo::bar::baz::baz always names baz's constructor 32 // in such a context, even if looking up 'baz' within foo::bar::baz would 33 // not find the injected-class-name. Likewise foo::bar::baz<T>::baz also 34 // names the constructor. 35 namespace InhCtor { 36 struct A { 37 A(int); 38 protected: 39 int T(); 40 }; 41 typedef A T; 42 struct B : A { 43 // This is a using-declaration for 'int A::T()' in C++98, but is an 44 // inheriting constructor declaration in C++11. 45 using InhCtor::T::T; 46 }; 47 #if __cplusplus < 201103L 48 B b(123); // expected-error {{no matching constructor}} 49 // expected-note@-7 2{{candidate constructor}} 50 int n = b.T(); // ok, accessible 51 #else 52 B b(123); // ok, inheriting constructor 53 int n = b.T(); // expected-error {{'T' is a protected member of 'InhCtor::A'}} 54 // expected-note@-15 {{declared protected here}} 55 56 template<typename T> 57 struct S : T { 58 struct U : S { 59 using S::S; 60 }; 61 using T::T; 62 }; 63 64 S<A>::U ua(0); 65 S<B>::U ub(0); 66 67 template<typename T> 68 struct X : T { 69 using T::Z::U::U; 70 }; 71 template<typename T> 72 struct X2 : T { 73 using T::Z::template V<int>::V; 74 }; 75 struct Y { 76 struct Z { 77 typedef Y U; 78 template<typename T> using V = Y; 79 }; 80 Y(int); 81 }; 82 X<Y> xy(0); 83 84 namespace Repeat { 85 struct A { 86 struct T { 87 T(int); 88 }; 89 }; 90 struct Z : A { 91 using A::A::A; 92 }; 93 template<typename T> 94 struct ZT : T::T { 95 using T::T::T; 96 }; 97 } 98 99 namespace NS { 100 struct NS {}; 101 } 102 struct DerivedFromNS : NS::NS { 103 // No special case unless the NNS names a class. 104 using InhCtor::NS::NS; // expected-error {{using declaration in class refers into 'InhCtor::NS::', which is not a class}} 105 106 }; 107 108 typedef int I; 109 struct UsingInt { 110 using I::I; // expected-error {{expected a class or namespace}} 111 }; 112 template<typename T> struct UsingIntTemplate { 113 using T::T; // expected-error {{type 'int' cannot be used prior to '::' because it has no members}} 114 }; 115 UsingIntTemplate<int> uit; // expected-note {{here}} 116 #endif 117 } 118
