1 // RUN: %clang_cc1 -fsyntax-only -verify %s 2 3 struct A {}; 4 struct B : A {}; 5 struct C : B {}; 6 7 struct D : private A {}; 8 struct E : A {}; 9 struct F : B, E {}; 10 11 struct Incomplete; // expected-note 2 {{forward declaration of 'Incomplete'}} 12 13 struct Poly 14 { 15 virtual void f(); 16 }; 17 18 struct PolyDerived : Poly 19 { 20 }; 21 22 void basic_bad() 23 { 24 // ptr -> nonptr 25 (void)dynamic_cast<A>((A*)0); // expected-error {{'A' is not a reference or pointer}} 26 // nonptr -> ptr 27 (void)dynamic_cast<A*>(0); // expected-error {{'int' is not a pointer}} 28 // ptr -> noncls 29 (void)dynamic_cast<int*>((A*)0); // expected-error {{'int' is not a class}} 30 // noncls -> ptr 31 (void)dynamic_cast<A*>((int*)0); // expected-error {{'int' is not a class}} 32 // ref -> noncls 33 (void)dynamic_cast<int&>(*((A*)0)); // expected-error {{'int' is not a class}} 34 // noncls -> ref 35 (void)dynamic_cast<A&>(*((int*)0)); // expected-error {{'int' is not a class}} 36 // ptr -> incomplete 37 (void)dynamic_cast<Incomplete*>((A*)0); // expected-error {{'Incomplete' is an incomplete type}} 38 // incomplete -> ptr 39 (void)dynamic_cast<A*>((Incomplete*)0); // expected-error {{'Incomplete' is an incomplete type}} 40 // rvalue -> lvalue 41 (void)dynamic_cast<A&>(A()); // expected-error {{dynamic_cast from rvalue to reference type 'A &'}} 42 } 43 44 void same() 45 { 46 (void)dynamic_cast<A*>((A*)0); 47 (void)dynamic_cast<A&>(*((A*)0)); 48 } 49 50 void up() 51 { 52 (void)dynamic_cast<A*>((B*)0); 53 (void)dynamic_cast<A&>(*((B*)0)); 54 (void)dynamic_cast<A*>((C*)0); 55 (void)dynamic_cast<A&>(*((C*)0)); 56 57 // Inaccessible 58 //(void)dynamic_cast<A*>((D*)0); 59 //(void)dynamic_cast<A&>(*((D*)0)); 60 61 // Ambiguous 62 (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}} 63 (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}} 64 } 65 66 void poly() 67 { 68 (void)dynamic_cast<A*>((Poly*)0); 69 (void)dynamic_cast<A&>(*((Poly*)0)); 70 (void)dynamic_cast<A*>((PolyDerived*)0); 71 (void)dynamic_cast<A&>(*((PolyDerived*)0)); 72 73 // Not polymorphic source 74 (void)dynamic_cast<Poly*>((A*)0); // expected-error {{'A' is not polymorphic}} 75 (void)dynamic_cast<PolyDerived&>(*((A*)0)); // expected-error {{'A' is not polymorphic}} 76 } 77
