1ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liao// RUN: %clang_cc1 -fsyntax-only -verify %s 2ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liaoclass A { }; 3ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liaoclass B : public A { }; 4ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liaoclass C : public A { }; 5ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liaoclass D : public B, public C { }; 6ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liao 7ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liaovoid f(D* d) { 8ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liao A* a; 9ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liao a = d; // expected-error{{ambiguous conversion from derived class 'D' to base class 'A':}} expected-error{{assigning to 'A *' from incompatible type 'D *'}} 10ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liao} 11ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liao 12ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liaoclass Object2 { }; 13ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liaoclass A2 : public Object2 { }; 14ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liaoclass B2 : public virtual A2 { }; 15ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liaoclass C2 : virtual public A2 { }; 16ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liaoclass D2 : public B2, public C2 { }; 170e2c34f92f00628d48968dfea096d36381f494cbStephen Hinesclass E2 : public D2, public C2, public virtual A2 { }; // expected-warning{{direct base 'C2' is inaccessible due to ambiguity:\n class E2 -> class D2 -> class C2\n class E2 -> class C2}} 180e2c34f92f00628d48968dfea096d36381f494cbStephen Hinesclass F2 : public E2, public A2 { }; // expected-warning{{direct base 'A2' is inaccessible due to ambiguity:\n class F2 -> class E2 -> class D2 -> class B2 -> class A2\n class F2 -> class A2}} 19ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liao 20ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liaovoid g(E2* e2, F2* f2) { 21ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liao Object2* o2; 22ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liao o2 = e2; 23ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liao o2 = f2; // expected-error{{ambiguous conversion from derived class 'F2' to base class 'Object2':}} expected-error{{assigning to 'Object2 *' from incompatible type 'F2 *'}} 24ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liao} 25ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liao 26ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liao// Test that ambiguous/inaccessibility checking does not trigger too 27ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liao// early, because it should not apply during overload resolution. 28ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liaovoid overload_okay(Object2*); 29ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liaovoid overload_okay(E2*); 30ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liao 31ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liaovoid overload_call(F2* f2) { 32ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liao overload_okay(f2); 33ea285162342df160e7860e26528bc7110bc6c0cdShih-wei Liao} 34