1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
| // no PCH
// RUN: %clang_cc1 -emit-llvm-only -include %s -include %s %s
// with PCH
// RUN: %clang_cc1 -emit-llvm-only -chain-include %s -chain-include %s %s
#if !defined(PASS1)
#define PASS1
// A base with a virtual dtor.
struct A {
virtual ~A();
};
// A derived class with an implicit virtual dtor.
struct B : A {
// Key function to suppress vtable definition.
virtual void virt();
};
#elif !defined(PASS2)
#define PASS2
// Further derived class that requires ~B().
// Causes definition of ~B(), but it was lost when saving PCH.
struct C : B {
C();
~C() {}
};
#else
void foo() {
// Variable that requires ~C().
C c;
}
// VTable placement would again cause definition of ~B(), hiding the bug,
// if not for B::virt(), which suppresses the placement.
#endif
|