llvm-project/clang/test/SemaCXX/using-decl-templates.cpp

83 lines
1.6 KiB
C++

// RUN: %clang_cc1 -fsyntax-only -verify %s
template<typename T> struct A {
void f() { }
struct N { }; // expected-note{{target of using declaration}}
};
template<typename T> struct B : A<T> {
using A<T>::f;
using A<T>::N; // expected-error{{dependent using declaration resolved to type without 'typename'}}
using A<T>::foo; // expected-error{{no member named 'foo'}}
using A<double>::f; // expected-error{{using declaration refers into 'A<double>::', which is not a base class of 'B<int>'}}
};
B<int> a; // expected-note{{in instantiation of template class 'B<int>' requested here}}
template<typename T> struct C : A<T> {
using A<T>::f;
void f() { };
};
template <typename T> struct D : A<T> {
using A<T>::f;
void f();
};
template<typename T> void D<T>::f() { }
template<typename T> struct E : A<T> {
using A<T>::f;
void g() { f(); }
};
namespace test0 {
struct Base {
int foo;
};
template<typename T> struct E : Base {
using Base::foo;
};
template struct E<int>;
}
// PR7896
namespace PR7896 {
template <class T> struct Foo {
int k (float);
};
struct Baz {
int k (int);
};
template <class T> struct Bar : public Foo<T>, Baz {
using Foo<T>::k;
using Baz::k;
int foo() {
return k (1.0f);
}
};
template int Bar<int>::foo();
}
// PR10883
namespace PR10883 {
template <typename T>
class Base {
public:
typedef long Container;
};
template <typename T>
class Derived : public Base<T> {
public:
using Base<T>::Container;
void foo(const Container& current); // expected-error {{unknown type name 'Container'}}
};
}