1 // RUN: %clang_cc1 %s -emit-llvm-only -triple=i386-pc-win32 -verify -DTEST1
2 // RUN: %clang_cc1 %s -emit-llvm-only -triple=i386-pc-win32 -verify -DTEST2
3 
4 #ifdef TEST1
5 struct A {
6   virtual A *foo();  // in vftable slot #0.
7   virtual A *bar();  // in vftable slot #1.
8 };
9 
10 struct B : virtual A {
11   // appended to the A subobject's vftable in slot #2.
12   virtual B *foo(); // expected-note{{covariant thunk required by 'foo'}}
13 };
14 
15 struct C : virtual A {
16   // appended to the A subobject's vftable in slot #2.
17   virtual C *bar(); // expected-note{{covariant thunk required by 'bar'}}
18 };
19 
20 struct D : B, C { D(); }; // expected-error{{ambiguous vftable component}}
21 D::D() {}
22 #endif
23 
24 #ifdef TEST2
25 struct A {
26   virtual A *foo(); // in vftable slot #0
27 };
28 
29 struct B : virtual A {
30   // appended to the A subobject's vftable in slot #1.
31   virtual B *foo(); // expected-note{{covariant thunk required by 'foo'}}
32 };
33 
34 struct C : virtual A {
35   // appended to the A subobject's vftable in slot #1.
36   virtual C *foo(); // expected-note{{covariant thunk required by 'foo'}}
37 };
38 
39 struct D : B, C { // expected-error{{ambiguous vftable component}}
40   virtual D *foo();
41   D();
42 };
43 D::D() {}
44 #endif
45