| // RUN: %clang_cc1 -fsyntax-only -verify -std=c++98 %s |
| // RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s |
| struct X0 { |
| X0(); |
| X0(int); |
| X0 f1(); |
| X0 f2(); |
| typedef int A; |
| typedef X0 B; |
| }; |
| |
| template<typename T> |
| struct X1 : X0 { |
| X1(); |
| X1<T>(int); |
| (X1<T>)(float); |
| X1 f2(); |
| X1 f2(int); |
| X1 f2(float); |
| X1 f2(double); |
| X1 f2(short); |
| X1 f2(long); |
| }; |
| |
| // Error recovery: out-of-line constructors whose names have template arguments. |
| template<typename T> X1<T>::X1<T>(int) { } // expected-error{{out-of-line constructor for 'X1' cannot have template arguments}} |
| template<typename T> (X1<T>::X1<T>)(float) { } // expected-error{{out-of-line constructor for 'X1' cannot have template arguments}} |
| |
| // Error recovery: out-of-line constructor names intended to be types |
| X0::X0 X0::f1() { return X0(); } // expected-error{{qualified reference to 'X0' is a constructor name rather than a type in this context}} |
| |
| struct X0::X0 X0::f2() { return X0(); } |
| |
| template<typename T> X1<T>::X1<T> X1<T>::f2() { } // expected-error{{missing 'typename'}} |
| template<typename T> X1<T>::X1<T> (X1<T>::f2)(int) { } // expected-error{{missing 'typename'}} |
| template<typename T> struct X1<T>::X1<T> (X1<T>::f2)(float) { } |
| template<typename T> struct X1<T>::X1 (X1<T>::f2)(double) { } |
| template<typename T> typename X1<T>::template X1<T> X1<T>::f2(short) { } // expected-warning {{qualified reference to 'X1' is a constructor name rather than a template name in this context}} |
| template<typename T> typename X1<T>::template X1<T> (X1<T>::f2)(long) { } // expected-warning {{qualified reference to 'X1' is a constructor name rather than a template name in this context}} |
| |
| void x1test(X1<int> x1i) { |
| x1i.f2(); |
| x1i.f2(0); |
| x1i.f2(0.f); |
| x1i.f2(0.); |
| } |
| |
| void other_contexts() { |
| X0::X0 x0; // expected-error{{qualified reference to 'X0' is a constructor name rather than a type in this context}} |
| X1<int>::X1 x1a; // expected-error{{qualified reference to 'X1' is a constructor name rather than a type in this context}} |
| X1<int>::X1<float> x1b; // expected-error{{qualified reference to 'X1' is a constructor name rather than a template name in this context}} |
| |
| X0::B ok1; |
| X0::X0::A ok2; |
| X0::X0::X0 x0b; // expected-error{{qualified reference to 'X0' is a constructor name rather than a type in this context}} |
| X1<int>::X0 ok3; |
| X1<int>::X0::X0 x0c; // expected-error{{qualified reference to 'X0' is a constructor name rather than a type in this context}} |
| X1<int>::X1<float>::X0 ok4; |
| |
| { |
| typename X0::X0 tn1; // expected-warning{{qualified reference to 'X0' is a constructor name rather than a type in this context}} expected-warning 0-1{{typename}} |
| typename X1<int>::X1<float> tn2; // expected-warning{{qualified reference to 'X1' is a constructor name rather than a template name in this context}} expected-warning 0-1{{typename}} |
| typename X0::B ok1; // expected-warning 0-1{{typename}} |
| typename X1<int>::X0 ok2; // expected-warning 0-1{{typename}} |
| } |
| |
| { |
| struct X0::X0 tag1; |
| struct X1<int>::X1 tag2; |
| struct X1<int>::X1<int> tag3; |
| } |
| |
| int a; |
| { |
| X0::X0(a); // expected-error{{qualified reference to 'X0' is a constructor name rather than a type in this context}} |
| // expected-warning@-1 {{redundant parentheses around declaration of variable named 'a'}} expected-note@-1 2{{}} |
| } |
| } |
| |
| template<typename T> void in_instantiation_x0() { |
| typename T::X0 x0; // expected-warning{{qualified reference to 'X0' is a constructor name rather than a type in this context}} |
| typename T::A a; |
| typename T::B b; |
| } |
| template void in_instantiation_x0<X0>(); // expected-note {{instantiation of}} |
| |
| template<typename T> void in_instantiation_x1() { |
| typename T::X1 x1; // expected-warning{{qualified reference to 'X1' is a constructor name rather than a type in this context}} |
| typename T::template X1<int> x1i; // expected-warning{{qualified reference to 'X1' is a constructor name rather than a template name in this context}} |
| typename T::X0 x0; |
| } |
| template void in_instantiation_x1<X1<int> >(); // expected-note {{instantiation of}} |
| |
| namespace sfinae { |
| template<typename T> void f(typename T::X0 *) = delete; // expected-warning 0-1{{extension}} |
| template<typename T> void f(...); |
| void g() { f<X0>(0); } |
| } |
| |
| namespace versus_injected_class_name { |
| template <typename T> struct A : T::B { |
| struct T::B *p; |
| typename T::B::type a; |
| A() : T::B() {} |
| |
| typename T::B b; // expected-warning {{qualified reference to 'B' is a constructor name rather than a type in this context}} |
| }; |
| struct B { |
| typedef int type; |
| }; |
| template struct A<B>; // expected-note {{in instantiation of}} |
| } |
| |
| // We have a special case for lookup within using-declarations that are |
| // member-declarations: foo::bar::baz::baz always names baz's constructor |
| // in such a context, even if looking up 'baz' within foo::bar::baz would |
| // not find the injected-class-name. Likewise foo::bar::baz<T>::baz also |
| // names the constructor. |
| namespace InhCtor { |
| struct A { |
| A(int); |
| protected: |
| int T(); |
| }; |
| typedef A T; |
| struct B : A { |
| // This is a using-declaration for 'int A::T()' in C++98, but is an |
| // inheriting constructor declaration in C++11. |
| using InhCtor::T::T; |
| }; |
| #if __cplusplus < 201103L |
| B b(123); // expected-error {{no matching constructor}} |
| // expected-note@-7 2{{candidate constructor}} |
| int n = b.T(); // ok, accessible |
| #else |
| B b(123); // ok, inheriting constructor |
| int n = b.T(); // expected-error {{'T' is a protected member of 'InhCtor::A'}} |
| // expected-note@-15 {{declared protected here}} |
| |
| // FIXME: EDG and GCC reject this too, but it's not clear why it would be |
| // ill-formed. |
| template<typename T> |
| struct S : T { |
| struct U : S { // expected-note 6{{candidate}} |
| using S::S; |
| }; |
| using T::T; |
| }; |
| S<A>::U ua(0); // expected-error {{no match}} |
| S<B>::U ub(0); // expected-error {{no match}} |
| |
| template<typename T> |
| struct X : T { |
| using T::Z::U::U; |
| }; |
| template<typename T> |
| struct X2 : T { |
| using T::Z::template V<int>::V; |
| }; |
| struct Y { |
| struct Z { |
| typedef Y U; |
| template<typename T> using V = Y; |
| }; |
| Y(int); |
| }; |
| X<Y> xy(0); |
| |
| namespace Repeat { |
| struct A { |
| struct T { |
| T(int); |
| }; |
| }; |
| struct Z : A { |
| using A::A::A; |
| }; |
| template<typename T> |
| struct ZT : T::T { |
| using T::T::T; |
| }; |
| } |
| |
| namespace NS { |
| struct NS {}; |
| } |
| struct DerivedFromNS : NS::NS { |
| // No special case unless the NNS names a class. |
| using InhCtor::NS::NS; // expected-error {{using declaration in class refers into 'InhCtor::NS::', which is not a class}} |
| |
| }; |
| |
| // FIXME: Consider reusing the same diagnostic between dependent and non-dependent contexts |
| typedef int I; |
| struct UsingInt { |
| using I::I; // expected-error {{'InhCtor::I' (aka 'int') is not a class, namespace, or enumeration}} |
| }; |
| template<typename T> struct UsingIntTemplate { |
| using T::T; // expected-error {{type 'int' cannot be used prior to '::' because it has no members}} |
| }; |
| UsingIntTemplate<int> uit; // expected-note {{here}} |
| |
| // This case is odd: we don't name the constructor of a dependent base as |
| // Base::Base, but we still happen to have enough information to identify |
| // when parsing the template that we're inheriting constructors. |
| // |
| // FIXME: Once CWG 2070 is resolved, check whether this case should be |
| // accepted or not. |
| namespace DependentCtorName { |
| template <typename T> struct B { B(int); }; |
| template <typename T> struct A : B<T> { |
| using X = B<T>; |
| using X::B; |
| }; |
| A<int> ab = 0; |
| } |
| #endif |
| } |