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
40
41
42
43
44
45
46
47
48
49
50
| // RUN: %clang_cc1 -verify -std=c++11 %s
// expected-no-diagnostics
template <typename T> struct OwnPtr {
T *p;
~OwnPtr() {
static_assert(sizeof(T) > 0, "incomplete T");
delete p;
}
};
namespace use_vtable_for_vcall {
struct Incomplete;
struct A {
virtual ~A() {}
virtual void m() {}
};
struct B : A {
B();
virtual void m() { }
virtual void m2() { static_cast<A *>(this)->m(); }
OwnPtr<Incomplete> m_sqlError;
};
void f() {
// Since B's constructor is declared out of line, nothing in this file
// references a vtable, so the destructor doesn't get built.
A *b = new B();
b->m();
delete b;
}
}
namespace dont_mark_qualified_vcall {
struct Incomplete;
struct A {
virtual ~A() {}
virtual void m() {}
};
struct B : A {
B();
// Previously we would mark B's vtable referenced to devirtualize this call to
// A::m, even though it's not a virtual call.
virtual void m() { A::m(); }
OwnPtr<Incomplete> m_sqlError;
};
B *f() {
return new B();
}
}
|