llvm-project/clang/test/SemaTemplate/dependent-base-classes.cpp

133 lines
2.9 KiB
C++

// RUN: %clang_cc1 -fsyntax-only -verify %s
template<typename T, typename U>
struct X0 : T::template apply<U> {
X0(U u) : T::template apply<U>(u) { }
};
template<typename T, typename U>
struct X1 : T::apply<U> { }; // expected-error{{use 'template' keyword to treat 'apply' as a dependent template name}}
template<typename T>
struct X2 : vector<T> { }; // expected-error{{no template named 'vector'}}
namespace PR6031 {
template<typename T>
struct A;
template <class X>
struct C { };
template <class TT>
struct II {
typedef typename A<TT>::type type;
};
template <class TT>
struct FI : II<TT>
{
C<typename FI::type> a;
};
template <class TT>
struct FI2
{
C<typename FI2::type> a; // expected-error{{no type named 'type' in 'FI2<TT>'}}
};
template<typename T>
struct Base {
class Nested { };
template<typename U> struct MemberTemplate { };
int a;
};
template<typename T>
struct HasDepBase : Base<T> {
int foo() {
class HasDepBase::Nested nested;
typedef typename HasDepBase::template MemberTemplate<T>::type type;
return HasDepBase::a;
}
};
template<typename T>
struct NoDepBase {
int foo() {
class NoDepBase::Nested nested; // expected-error{{no class named 'Nested' in 'NoDepBase<T>'}}
typedef typename NoDepBase::template MemberTemplate<T>::type type; // expected-error{{no member named 'MemberTemplate' in 'NoDepBase<T>'}}
return NoDepBase::a; // expected-error{{no member named 'a' in 'NoDepBase<T>'}}
}
};
}
namespace Ambig {
template<typename T>
struct Base1 {
typedef int type; // expected-note{{member found by ambiguous name lookup}}
};
struct Base2 {
typedef float type; // expected-note{{member found by ambiguous name lookup}}
};
template<typename T>
struct Derived : Base1<T>, Base2 {
typedef typename Derived::type type; // expected-error{{member 'type' found in multiple base classes of different types}}
type *foo(float *fp) { return fp; }
};
Derived<int> di; // expected-note{{instantiation of}}
}
namespace PR6081 {
template<typename T>
struct A { };
template<typename T>
class B : public A<T>
{
public:
template< class X >
void f0(const X & k)
{
this->template f1<int>()(k);
}
};
template<typename T>
class C
{
public:
template< class X >
void f0(const X & k)
{
this->template f1<int>()(k); // expected-error{{no member named 'f1' in 'C<T>'}}
}
};
}
namespace PR6413 {
template <typename T> class Base_A { };
class Base_B { };
template <typename T>
class Derived
: public virtual Base_A<T>
, public virtual Base_B
{ };
}
namespace PR5812 {
template <class T> struct Base {
Base* p;
};
template <class T> struct Derived: public Base<T> {
typename Derived::Base* p; // meaning Derived::Base<T>
};
Derived<int> di;
}