rtti-linkage.cpp revision 610b0d94d71810773378be4f39922a56b1202a83 
1// RUN: %clang_cc1 %s -I%S -triple=x86_64-apple-darwin10 -emit-llvm -o - | FileCheck %s
2#include <typeinfo>
3
4// CHECK: _ZTS1B = constant
5// CHECK: _ZTS1A = weak_odr constant
6// CHECK: _ZTI1A = weak_odr constant
7// CHECK: _ZTI1B = constant
8// CHECK: _ZTSP1C = internal constant
9// CHECK: _ZTS1C = internal constant
10// CHECK: _ZTI1C = internal constant
11// CHECK: _ZTIP1C = internal constant
12// CHECK: _ZTSPP1C = internal constant
13// CHECK: _ZTIPP1C = internal constant
14// CHECK: _ZTSM1Ci = internal constant
15// CHECK: _ZTIM1Ci = internal constant
16// CHECK: _ZTSPM1Ci = internal constant
17// CHECK: _ZTIPM1Ci = internal constant
18// CHECK: _ZTSM1CS_ = internal constant
19// CHECK: _ZTIM1CS_ = internal constant
20// CHECK: _ZTSM1CPS_ = internal constant
21// CHECK: _ZTIM1CPS_ = internal constant
22// CHECK: _ZTSM1A1C = internal constant
23// CHECK: _ZTIM1A1C = internal constant
24// CHECK: _ZTSM1AP1C = internal constant
25// CHECK: _ZTIM1AP1C = internal constant
26
27// CHECK: _ZTSN12_GLOBAL__N_11DE = internal constant
28// CHECK: _ZTIN12_GLOBAL__N_11DE = internal constant
29// CHECK: _ZTSPN12_GLOBAL__N_11DE = internal constant
30// CHECK: _ZTIPN12_GLOBAL__N_11DE = internal constant
31
32// A has no key function, so its RTTI data should be weak_odr.
33struct A { };
34
35// B has a key function defined in the translation unit, so the RTTI data should
36// be emitted in this translation unit and have external linkage.
37struct B : A {
38  virtual void f();
39};
40void B::f() { }
41
42// C is an incomplete class type, so any direct or indirect pointer types should have
43// internal linkage, as should the type info for C itself (FIXME).
44struct C;
45
46void t1() {
47  (void)typeid(C*);
48  (void)typeid(C**);
49  (void)typeid(int C::*);
50  (void)typeid(int C::**);
51  (void)typeid(C C::*);
52  (void)typeid(C *C::*);
53  (void)typeid(C A::*);
54  (void)typeid(C* A::*);
55}
56
57namespace {
58  // D is inside an anonymous namespace, so all type information related to D should have
59  // internal linkage.
60  struct D { };
61};
62
63void t2() {
64  (void)typeid(D);
65  (void)typeid(D *);
66
67}
68