// 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-warning{{missing 'typename'}}
template<typename T> X1<T>::X1<T> (X1<T>::f2)(int) { } // expected-warning{{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; // expected-note 6{{candidate}}
using T::T;
};
template<typename T>
struct S<T>::U : S {
using S::S;
};
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
}
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