1 // RUN: %clang_cc1 %s -I%S -triple=x86_64-apple-darwin10 -emit-llvm -O3 -o - | FileCheck %s
2 #include <typeinfo>
3
4 // vtables.
5 extern "C" {
6 const void *_ZTVN10__cxxabiv123__fundamental_type_infoE;
7 const void *_ZTVN10__cxxabiv117__class_type_infoE;
8 const void *_ZTVN10__cxxabiv120__si_class_type_infoE;
9 const void *_ZTVN10__cxxabiv121__vmi_class_type_infoE;
10 const void *_ZTVN10__cxxabiv119__pointer_type_infoE;
11 const void *_ZTVN10__cxxabiv129__pointer_to_member_type_infoE;
12 };
13 #define fundamental_type_info_vtable _ZTVN10__cxxabiv123__fundamental_type_infoE
14 #define class_type_info_vtable _ZTVN10__cxxabiv117__class_type_infoE
15 #define si_class_type_info_vtable _ZTVN10__cxxabiv120__si_class_type_infoE
16 #define vmi_class_type_info_vtable _ZTVN10__cxxabiv121__vmi_class_type_infoE
17 #define pointer_type_info_vtable _ZTVN10__cxxabiv119__pointer_type_infoE
18 #define pointer_to_member_type_info_vtable _ZTVN10__cxxabiv129__pointer_to_member_type_infoE
19
20 class __pbase_type_info : public std::type_info {
21 public:
22 unsigned int __flags;
23 const std::type_info *__pointee;
24
25 enum __masks {
26 __const_mask = 0x1,
27 __volatile_mask = 0x2,
28 __restrict_mask = 0x4,
29 __incomplete_mask = 0x8,
30 __incomplete_class_mask = 0x10
31 };
32 };
33
34 class __class_type_info : public std::type_info { };
35
36 class __si_class_type_info : public __class_type_info {
37 public:
38 const __class_type_info *__base_type;
39 };
40
41 struct __base_class_type_info {
42 public:
43 const __class_type_info *__base_type;
44 long __offset_flags;
45
46 enum __offset_flags_masks {
47 __virtual_mask = 0x1,
48 __public_mask = 0x2,
49 __offset_shift = 8
50 };
51 };
52
53 class __vmi_class_type_info : public __class_type_info {
54 public:
55 unsigned int __flags;
56 unsigned int __base_count;
57 __base_class_type_info __base_info[1];
58
59 enum __flags_masks {
60 __non_diamond_repeat_mask = 0x1,
61 __diamond_shaped_mask = 0x2
62 };
63 };
64
to(const std::type_info & info)65 template<typename T> const T& to(const std::type_info &info) {
66 return static_cast<const T&>(info);
67 }
68 struct Incomplete;
69
70 struct A { int a; };
71 struct Empty { };
72
73 struct SI1 : A { };
74 struct SI2 : Empty { };
fSI375 struct SI3 : Empty { virtual void f() { } };
76
77 struct VMI1 : private A { };
78 struct VMI2 : virtual A { };
fVMI379 struct VMI3 : A { virtual void f() { } };
80 struct VMI4 : A, Empty { };
81
82 struct VMIBase1 { int a; };
83 struct VMIBase2 : VMIBase1 { int a; };
84 struct VMI5 : VMIBase1, VMIBase2 { int a; };
85
86 struct VMIBase3 : virtual VMIBase1 { int a; };
87 struct VMI6 : virtual VMIBase1, VMIBase3 { int a; };
88
89 struct VMI7 : VMIBase1, VMI5, private VMI6 { };
90
91 #define CHECK(x) if (!(x)) return __LINE__
92 #define CHECK_VTABLE(type, vtable) CHECK(&vtable##_type_info_vtable + 2 == (((void **)&(typeid(type)))[0]))
93 #define CHECK_BASE_INFO_TYPE(type, index, base) CHECK(to<__vmi_class_type_info>(typeid(type)).__base_info[(index)].__base_type == &typeid(base))
94 #define CHECK_BASE_INFO_OFFSET_FLAGS(type, index, offset, flags) CHECK(to<__vmi_class_type_info>(typeid(type)).__base_info[(index)].__offset_flags == (((offset) << 8) | (flags)))
95
96 struct B {
97 static int const volatile (*a)[10];
98 static int (*b)[10];
99
100 static int const volatile (B::*c)[10];
101 static int (B::*d)[10];
102 };
103
104 // CHECK-LABEL: define i32 @_Z1fv()
f()105 int f() {
106 // Vectors should be treated as fundamental types.
107 typedef short __v4hi __attribute__ ((__vector_size__ (8)));
108 CHECK_VTABLE(__v4hi, fundamental);
109
110 // A does not have any bases.
111 CHECK_VTABLE(A, class);
112
113 // SI1 has a single public base.
114 CHECK_VTABLE(SI1, si_class);
115 CHECK(to<__si_class_type_info>(typeid(SI1)).__base_type == &typeid(A));
116
117 // SI2 has a single public empty base.
118 CHECK_VTABLE(SI2, si_class);
119 CHECK(to<__si_class_type_info>(typeid(SI2)).__base_type == &typeid(Empty));
120
121 // SI3 has a single public empty base. SI3 is dynamic whereas Empty is not, but since Empty is
122 // an empty class, it will still be at offset zero.
123 CHECK_VTABLE(SI3, si_class);
124 CHECK(to<__si_class_type_info>(typeid(SI3)).__base_type == &typeid(Empty));
125
126 // VMI1 has a single base, but it is private.
127 CHECK_VTABLE(VMI1, vmi_class);
128
129 // VMI2 has a single base, but it is virtual.
130 CHECK_VTABLE(VMI2, vmi_class);
131
132 // VMI3 has a single base, but VMI3 is dynamic whereas A is not, and A is not empty.
133 CHECK_VTABLE(VMI3, vmi_class);
134
135 // VMI4 has two bases.
136 CHECK_VTABLE(VMI4, vmi_class);
137
138 // VMI5 has non-diamond shaped inheritance.
139 CHECK_VTABLE(VMI5, vmi_class);
140 CHECK(to<__vmi_class_type_info>(typeid(VMI5)).__flags == __vmi_class_type_info::__non_diamond_repeat_mask);
141 CHECK(to<__vmi_class_type_info>(typeid(VMI5)).__base_count == 2);
142 CHECK_BASE_INFO_TYPE(VMI5, 0, VMIBase1);
143 CHECK_BASE_INFO_OFFSET_FLAGS(VMI5, 0, 0, __base_class_type_info::__public_mask);
144 CHECK_BASE_INFO_TYPE(VMI5, 1, VMIBase2);
145 CHECK_BASE_INFO_OFFSET_FLAGS(VMI5, 1, 4, __base_class_type_info::__public_mask);
146
147 // VMI6 has diamond shaped inheritance.
148 CHECK_VTABLE(VMI6, vmi_class);
149 CHECK(to<__vmi_class_type_info>(typeid(VMI6)).__flags == __vmi_class_type_info::__diamond_shaped_mask);
150 CHECK(to<__vmi_class_type_info>(typeid(VMI6)).__base_count == 2);
151 CHECK_BASE_INFO_TYPE(VMI6, 0, VMIBase1);
152 CHECK_BASE_INFO_OFFSET_FLAGS(VMI6, 0, -24, __base_class_type_info::__public_mask | __base_class_type_info::__virtual_mask);
153 CHECK_BASE_INFO_TYPE(VMI6, 1, VMIBase3);
154 CHECK_BASE_INFO_OFFSET_FLAGS(VMI6, 1, 0, __base_class_type_info::__public_mask);
155
156 // VMI7 has both non-diamond and diamond shaped inheritance.
157 CHECK_VTABLE(VMI7, vmi_class);
158 CHECK(to<__vmi_class_type_info>(typeid(VMI7)).__flags == (__vmi_class_type_info::__non_diamond_repeat_mask | __vmi_class_type_info::__diamond_shaped_mask));
159 CHECK(to<__vmi_class_type_info>(typeid(VMI7)).__base_count == 3);
160 CHECK_BASE_INFO_TYPE(VMI7, 0, VMIBase1);
161 CHECK_BASE_INFO_OFFSET_FLAGS(VMI7, 0, 16, __base_class_type_info::__public_mask);
162 CHECK_BASE_INFO_TYPE(VMI7, 1, VMI5);
163 CHECK_BASE_INFO_OFFSET_FLAGS(VMI7, 1, 20, __base_class_type_info::__public_mask);
164 CHECK_BASE_INFO_TYPE(VMI7, 2, VMI6);
165 CHECK_BASE_INFO_OFFSET_FLAGS(VMI7, 2, 0, 0);
166
167 // Pointers to incomplete classes.
168 CHECK_VTABLE(Incomplete *, pointer);
169 CHECK(to<__pbase_type_info>(typeid(Incomplete *)).__flags == __pbase_type_info::__incomplete_mask);
170 CHECK(to<__pbase_type_info>(typeid(Incomplete **)).__flags == __pbase_type_info::__incomplete_mask);
171 CHECK(to<__pbase_type_info>(typeid(Incomplete ***)).__flags == __pbase_type_info::__incomplete_mask);
172
173 // Member pointers.
174 CHECK_VTABLE(int Incomplete::*, pointer_to_member);
175 CHECK(to<__pbase_type_info>(typeid(int Incomplete::*)).__flags == __pbase_type_info::__incomplete_class_mask);
176 CHECK(to<__pbase_type_info>(typeid(Incomplete Incomplete::*)).__flags == (__pbase_type_info::__incomplete_class_mask | __pbase_type_info::__incomplete_mask));
177 CHECK(to<__pbase_type_info>(typeid(Incomplete A::*)).__flags == (__pbase_type_info::__incomplete_mask));
178
179 // Check that when stripping qualifiers off the pointee type, we correctly handle arrays.
180 CHECK(to<__pbase_type_info>(typeid(B::a)).__flags == (__pbase_type_info::__const_mask | __pbase_type_info::__volatile_mask));
181 CHECK(to<__pbase_type_info>(typeid(B::a)).__pointee == to<__pbase_type_info>(typeid(B::b)).__pointee);
182 CHECK(to<__pbase_type_info>(typeid(B::c)).__flags == (__pbase_type_info::__const_mask | __pbase_type_info::__volatile_mask));
183 CHECK(to<__pbase_type_info>(typeid(B::c)).__pointee == to<__pbase_type_info>(typeid(B::d)).__pointee);
184
185 // Success!
186 // CHECK: ret i32 0
187 return 0;
188 }
189
190 #ifdef HARNESS
191 extern "C" void printf(const char *, ...);
192
main()193 int main() {
194 int result = f();
195
196 if (result == 0)
197 printf("success!\n");
198 else
199 printf("test on line %d failed!\n", result);
200
201 return result;
202 }
203 #endif
204
205
206