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// RUN: %clang_cc1 -fsyntax-only -verify %s
struct A {};
struct B : A {};
struct C : B {};
struct D : private A {};
struct E : A {};
struct F : B, E {};
struct Incomplete; // expected-note 2 {{forward declaration of 'Incomplete'}}
struct Poly
{
virtual void f();
};
struct PolyDerived : Poly
{
};
void basic_bad()
{
// ptr -> nonptr
(void)dynamic_cast<A>((A*)0); // expected-error {{invalid target type 'A' for dynamic_cast; target type must be a reference or pointer type to a defined class}}
// nonptr -> ptr
(void)dynamic_cast<A*>(0); // expected-error {{cannot use dynamic_cast to convert from 'int' to 'A *'}}
// ptr -> noncls
(void)dynamic_cast<int*>((A*)0); // expected-error {{'int' is not a class type}}
// noncls -> ptr
(void)dynamic_cast<A*>((int*)0); // expected-error {{'int' is not a class type}}
// ref -> noncls
(void)dynamic_cast<int&>(*((A*)0)); // expected-error {{'int' is not a class type}}
// noncls -> ref
(void)dynamic_cast<A&>(*((int*)0)); // expected-error {{'int' is not a class type}}
// ptr -> incomplete
(void)dynamic_cast<Incomplete*>((A*)0); // expected-error {{'Incomplete' is an incomplete type}}
// incomplete -> ptr
(void)dynamic_cast<A*>((Incomplete*)0); // expected-error {{'Incomplete' is an incomplete type}}
// rvalue -> lvalue
(void)dynamic_cast<A&>(A()); // expected-error {{dynamic_cast from rvalue to reference type 'A &'}}
}
void same()
{
(void)dynamic_cast<A*>((A*)0);
(void)dynamic_cast<A&>(*((A*)0));
}
void up()
{
(void)dynamic_cast<A*>((B*)0);
(void)dynamic_cast<A&>(*((B*)0));
(void)dynamic_cast<A*>((C*)0);
(void)dynamic_cast<A&>(*((C*)0));
// Inaccessible
//(void)dynamic_cast<A*>((D*)0);
//(void)dynamic_cast<A&>(*((D*)0));
// Ambiguous
(void)dynamic_cast<A*>((F*)0); // expected-error {{ambiguous conversion from derived class 'F' to base class 'A':\n struct F -> struct B -> struct A\n struct F -> struct E -> struct A}}
(void)dynamic_cast<A&>(*((F*)0)); // expected-error {{ambiguous conversion from derived class 'F' to base class 'A':\n struct F -> struct B -> struct A\n struct F -> struct E -> struct A}}
}
void poly()
{
(void)dynamic_cast<A*>((Poly*)0);
(void)dynamic_cast<A&>(*((Poly*)0));
(void)dynamic_cast<A*>((PolyDerived*)0);
(void)dynamic_cast<A&>(*((PolyDerived*)0));
// Not polymorphic source
(void)dynamic_cast<Poly*>((A*)0); // expected-error {{'A' is not polymorphic}}
(void)dynamic_cast<PolyDerived&>(*((A*)0)); // expected-error {{'A' is not polymorphic}}
}
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