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