1a5728872c7702ddd09537c95bc3cbd20e1f2fb09Daniel Dunbar// RUN: %clang_cc1 -fsyntax-only -verify %s 20777972d38a3125efed962b045704c30ae6965cfSebastian Redl 30777972d38a3125efed962b045704c30ae6965cfSebastian Redlstruct A {}; 40777972d38a3125efed962b045704c30ae6965cfSebastian Redlstruct B : A {}; 50777972d38a3125efed962b045704c30ae6965cfSebastian Redlstruct C : B {}; 60777972d38a3125efed962b045704c30ae6965cfSebastian Redl 70777972d38a3125efed962b045704c30ae6965cfSebastian Redlstruct D : private A {}; 80777972d38a3125efed962b045704c30ae6965cfSebastian Redlstruct E : A {}; 90777972d38a3125efed962b045704c30ae6965cfSebastian Redlstruct F : B, E {}; 100777972d38a3125efed962b045704c30ae6965cfSebastian Redl 117c2342dd4c9947806842e5aca3d2bb2e542853c9John McCallstruct Incomplete; // expected-note 2 {{forward declaration of 'Incomplete'}} 120777972d38a3125efed962b045704c30ae6965cfSebastian Redl 13d93f0ddba0965ded252e228134b30ce30e863fb0Sebastian Redlstruct Poly 14d93f0ddba0965ded252e228134b30ce30e863fb0Sebastian Redl{ 15d93f0ddba0965ded252e228134b30ce30e863fb0Sebastian Redl virtual void f(); 16d93f0ddba0965ded252e228134b30ce30e863fb0Sebastian Redl}; 17d93f0ddba0965ded252e228134b30ce30e863fb0Sebastian Redl 18d93f0ddba0965ded252e228134b30ce30e863fb0Sebastian Redlstruct PolyDerived : Poly 19d93f0ddba0965ded252e228134b30ce30e863fb0Sebastian Redl{ 20d93f0ddba0965ded252e228134b30ce30e863fb0Sebastian Redl}; 21d93f0ddba0965ded252e228134b30ce30e863fb0Sebastian Redl 220777972d38a3125efed962b045704c30ae6965cfSebastian Redlvoid basic_bad() 230777972d38a3125efed962b045704c30ae6965cfSebastian Redl{ 240777972d38a3125efed962b045704c30ae6965cfSebastian Redl // ptr -> nonptr 257c2342dd4c9947806842e5aca3d2bb2e542853c9John McCall (void)dynamic_cast<A>((A*)0); // expected-error {{'A' is not a reference or pointer}} 260777972d38a3125efed962b045704c30ae6965cfSebastian Redl // nonptr -> ptr 270777972d38a3125efed962b045704c30ae6965cfSebastian Redl (void)dynamic_cast<A*>(0); // expected-error {{'int' is not a pointer}} 280777972d38a3125efed962b045704c30ae6965cfSebastian Redl // ptr -> noncls 290777972d38a3125efed962b045704c30ae6965cfSebastian Redl (void)dynamic_cast<int*>((A*)0); // expected-error {{'int' is not a class}} 300777972d38a3125efed962b045704c30ae6965cfSebastian Redl // noncls -> ptr 310777972d38a3125efed962b045704c30ae6965cfSebastian Redl (void)dynamic_cast<A*>((int*)0); // expected-error {{'int' is not a class}} 320777972d38a3125efed962b045704c30ae6965cfSebastian Redl // ref -> noncls 330777972d38a3125efed962b045704c30ae6965cfSebastian Redl (void)dynamic_cast<int&>(*((A*)0)); // expected-error {{'int' is not a class}} 340777972d38a3125efed962b045704c30ae6965cfSebastian Redl // noncls -> ref 350777972d38a3125efed962b045704c30ae6965cfSebastian Redl (void)dynamic_cast<A&>(*((int*)0)); // expected-error {{'int' is not a class}} 360777972d38a3125efed962b045704c30ae6965cfSebastian Redl // ptr -> incomplete 377c2342dd4c9947806842e5aca3d2bb2e542853c9John McCall (void)dynamic_cast<Incomplete*>((A*)0); // expected-error {{'Incomplete' is an incomplete type}} 380777972d38a3125efed962b045704c30ae6965cfSebastian Redl // incomplete -> ptr 397c2342dd4c9947806842e5aca3d2bb2e542853c9John McCall (void)dynamic_cast<A*>((Incomplete*)0); // expected-error {{'Incomplete' is an incomplete type}} 40f5d40bf94ac1d1d281d50fa12aeb2b7b8d7aaf9dEli Friedman // rvalue -> lvalue 41f5d40bf94ac1d1d281d50fa12aeb2b7b8d7aaf9dEli Friedman (void)dynamic_cast<A&>(A()); // expected-error {{dynamic_cast from rvalue to reference type 'A &'}} 420777972d38a3125efed962b045704c30ae6965cfSebastian Redl} 430777972d38a3125efed962b045704c30ae6965cfSebastian Redl 440777972d38a3125efed962b045704c30ae6965cfSebastian Redlvoid same() 450777972d38a3125efed962b045704c30ae6965cfSebastian Redl{ 460777972d38a3125efed962b045704c30ae6965cfSebastian Redl (void)dynamic_cast<A*>((A*)0); 470777972d38a3125efed962b045704c30ae6965cfSebastian Redl (void)dynamic_cast<A&>(*((A*)0)); 480777972d38a3125efed962b045704c30ae6965cfSebastian Redl} 490777972d38a3125efed962b045704c30ae6965cfSebastian Redl 500777972d38a3125efed962b045704c30ae6965cfSebastian Redlvoid up() 510777972d38a3125efed962b045704c30ae6965cfSebastian Redl{ 520777972d38a3125efed962b045704c30ae6965cfSebastian Redl (void)dynamic_cast<A*>((B*)0); 530777972d38a3125efed962b045704c30ae6965cfSebastian Redl (void)dynamic_cast<A&>(*((B*)0)); 540777972d38a3125efed962b045704c30ae6965cfSebastian Redl (void)dynamic_cast<A*>((C*)0); 550777972d38a3125efed962b045704c30ae6965cfSebastian Redl (void)dynamic_cast<A&>(*((C*)0)); 560777972d38a3125efed962b045704c30ae6965cfSebastian Redl 570777972d38a3125efed962b045704c30ae6965cfSebastian Redl // Inaccessible 580777972d38a3125efed962b045704c30ae6965cfSebastian Redl //(void)dynamic_cast<A*>((D*)0); 590777972d38a3125efed962b045704c30ae6965cfSebastian Redl //(void)dynamic_cast<A&>(*((D*)0)); 600777972d38a3125efed962b045704c30ae6965cfSebastian Redl 610777972d38a3125efed962b045704c30ae6965cfSebastian Redl // Ambiguous 627c2342dd4c9947806842e5aca3d2bb2e542853c9John McCall (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}} 637c2342dd4c9947806842e5aca3d2bb2e542853c9John McCall (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}} 640777972d38a3125efed962b045704c30ae6965cfSebastian Redl} 650777972d38a3125efed962b045704c30ae6965cfSebastian Redl 66d93f0ddba0965ded252e228134b30ce30e863fb0Sebastian Redlvoid poly() 67d93f0ddba0965ded252e228134b30ce30e863fb0Sebastian Redl{ 68d93f0ddba0965ded252e228134b30ce30e863fb0Sebastian Redl (void)dynamic_cast<A*>((Poly*)0); 69d93f0ddba0965ded252e228134b30ce30e863fb0Sebastian Redl (void)dynamic_cast<A&>(*((Poly*)0)); 70d93f0ddba0965ded252e228134b30ce30e863fb0Sebastian Redl (void)dynamic_cast<A*>((PolyDerived*)0); 71d93f0ddba0965ded252e228134b30ce30e863fb0Sebastian Redl (void)dynamic_cast<A&>(*((PolyDerived*)0)); 72d93f0ddba0965ded252e228134b30ce30e863fb0Sebastian Redl 73d93f0ddba0965ded252e228134b30ce30e863fb0Sebastian Redl // Not polymorphic source 747c2342dd4c9947806842e5aca3d2bb2e542853c9John McCall (void)dynamic_cast<Poly*>((A*)0); // expected-error {{'A' is not polymorphic}} 757c2342dd4c9947806842e5aca3d2bb2e542853c9John McCall (void)dynamic_cast<PolyDerived&>(*((A*)0)); // expected-error {{'A' is not polymorphic}} 76d93f0ddba0965ded252e228134b30ce30e863fb0Sebastian Redl} 77