1 // no PCH
2 // RUN: %clang_cc1 -emit-llvm-only -include %s -include %s %s
3 // with PCH
4 // RUN: %clang_cc1 -emit-llvm-only -chain-include %s -chain-include %s %s
5 #if !defined(PASS1)
6 #define PASS1
7
8 // A base with a virtual dtor.
9 struct A {
10 virtual ~A();
11 };
12
13 // A derived class with an implicit virtual dtor.
14 struct B : A {
15 // Key function to suppress vtable definition.
16 virtual void virt();
17 };
18
19 #elif !defined(PASS2)
20 #define PASS2
21
22 // Further derived class that requires ~B().
23 // Causes definition of ~B(), but it was lost when saving PCH.
24 struct C : B {
25 C();
~CC26 ~C() {}
27 };
28
29 #else
30
foo()31 void foo() {
32 // Variable that requires ~C().
33 C c;
34 }
35
36 // VTable placement would again cause definition of ~B(), hiding the bug,
37 // if not for B::virt(), which suppresses the placement.
38
39 #endif
40