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 // FIXME: EDG and GCC reject this too, but it's not clear why it would be 57 // ill-formed. 58 template<typename T> 59 struct S : T { 60 struct U : S { // expected-note 6{{candidate}} 61 using S::S; 62 }; 63 using T::T; 64 }; 65 S<A>::U ua(0); // expected-error {{no match}} 66 S<B>::U ub(0); // expected-error {{no match}} 67 68 template<typename T> 69 struct X : T { 70 using T::Z::U::U; 71 }; 72 template<typename T> 73 struct X2 : T { 74 using T::Z::template V<int>::V; 75 }; 76 struct Y { 77 struct Z { 78 typedef Y U; 79 template<typename T> using V = Y; 80 }; 81 Y(int); 82 }; 83 X<Y> xy(0); 84 85 namespace Repeat { 86 struct A { 87 struct T { 88 T(int); 89 }; 90 }; 91 struct Z : A { 92 using A::A::A; 93 }; 94 template<typename T> 95 struct ZT : T::T { 96 using T::T::T; 97 }; 98 } 99 100 namespace NS { 101 struct NS {}; 102 } 103 struct DerivedFromNS : NS::NS { 104 // No special case unless the NNS names a class. 105 using InhCtor::NS::NS; // expected-error {{using declaration in class refers into 'InhCtor::NS::', which is not a class}} 106 107 }; 108 109 // FIXME: Consider reusing the same diagnostic between dependent and non-dependent contexts 110 typedef int I; 111 struct UsingInt { 112 using I::I; // expected-error {{'I' (aka 'int') is not a class, namespace, or enumeration}} 113 }; 114 template<typename T> struct UsingIntTemplate { 115 using T::T; // expected-error {{type 'int' cannot be used prior to '::' because it has no members}} 116 }; 117 UsingIntTemplate<int> uit; // expected-note {{here}} 118 #endif 119 } 120