minix/external/bsd/llvm/dist/clang/test/SemaTemplate/virtual-member-functions.cpp

99 lines
2.3 KiB
C++
Raw Normal View History

// RUN: %clang_cc1 -fsyntax-only -verify %s
namespace PR5557 {
template <class T> struct A {
A();
virtual void anchor();
virtual int a(T x);
};
template<class T> A<T>::A() {}
template<class T> void A<T>::anchor() { }
template<class T> int A<T>::a(T x) {
return *x; // expected-error{{requires pointer operand}}
}
void f(A<int> x) {
x.anchor(); // expected-note{{instantiation}}
}
template<typename T>
struct X {
virtual void f();
};
template<>
void X<int>::f() { }
}
template<typename T>
struct Base {
virtual ~Base() {
int *ptr = 0;
T t = ptr; // expected-error{{cannot initialize}}
}
};
template<typename T>
struct Derived : Base<T> {
virtual void foo() { }
};
template struct Derived<int>; // expected-note {{in instantiation of member function 'Base<int>::~Base' requested here}}
template<typename T>
struct HasOutOfLineKey {
HasOutOfLineKey() { }
virtual T *f(float *fp);
};
template<typename T>
T *HasOutOfLineKey<T>::f(float *fp) {
return fp; // expected-error{{cannot initialize return object of type 'int *' with an lvalue of type 'float *'}}
}
HasOutOfLineKey<int> out_of_line; // expected-note{{in instantiation of member function 'HasOutOfLineKey<int>::f' requested here}}
namespace std {
class type_info;
}
namespace PR7114 {
class A { virtual ~A(); }; // expected-note{{declared private here}}
template<typename T>
class B {
public:
class Inner : public A { }; // expected-error{{base class 'PR7114::A' has private destructor}}
static Inner i;
static const unsigned value = sizeof(i) == 4;
};
int f() { return B<int>::value; }
void test_typeid(B<float>::Inner bfi) {
(void)typeid(bfi); // expected-note{{implicit destructor}}
}
template<typename T>
struct X : A {
void f() { }
};
void test_X(X<int> xi, X<float> xf) {
xi.f();
}
}
namespace DynamicCast {
struct Y {};
template<typename T> struct X : virtual Y {
virtual void foo() { T x; } // expected-error {{variable has incomplete type 'void'}}
};
template<typename T> struct X2 : virtual Y {
virtual void foo() { T x; }
};
Y* f(X<void>* x) { return dynamic_cast<Y*>(x); } // expected-note {{in instantiation of member function 'DynamicCast::X<void>::foo' requested here}}
Y* f2(X<void>* x) { return dynamic_cast<Y*>(x); }
}