John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 1 | // RUN: %clang_cc1 -fobjc-nonfragile-abi -fsyntax-only -fobjc-arc -verify -fblocks %s |
| 2 | |
| 3 | @interface A |
| 4 | @end |
| 5 | |
| 6 | template<typename T, typename U> |
| 7 | struct is_same { |
| 8 | static const bool value = false; |
| 9 | }; |
| 10 | |
| 11 | template<typename T> |
| 12 | struct is_same<T, T> { |
| 13 | static const bool value = true; |
| 14 | }; |
| 15 | |
| 16 | // Instantiation for reference/pointer types that will get lifetime |
| 17 | // adjustments. |
| 18 | template<typename T> |
| 19 | struct X0 { |
Douglas Gregor | e559ca1 | 2011-06-17 22:11:49 +0000 | [diff] [blame] | 20 | typedef T* pointer; // okay: ends up being strong. |
| 21 | typedef T& reference; // okay: ends up being strong |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 22 | }; |
| 23 | |
| 24 | void test_X0() { |
Douglas Gregor | e559ca1 | 2011-06-17 22:11:49 +0000 | [diff] [blame] | 25 | X0<id> x0id; |
| 26 | X0<A*> x0a; |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 27 | X0<__strong A*> x0sa; |
| 28 | |
| 29 | id __strong *ptr; |
| 30 | id __strong val; |
| 31 | X0<__strong id>::pointer &ptr_ref = ptr; |
| 32 | X0<__strong id>::reference ref = val; |
| 33 | } |
| 34 | |
Douglas Gregor | e559ca1 | 2011-06-17 22:11:49 +0000 | [diff] [blame] | 35 | int check_infer_strong[is_same<id, __strong id>::value? 1 : -1]; |
| 36 | |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 37 | // Check template argument deduction (e.g., for specialization) using |
| 38 | // lifetime qualifiers. |
| 39 | template<typename T> |
| 40 | struct is_pointer_strong { |
| 41 | static const bool value = false; |
| 42 | }; |
| 43 | |
| 44 | template<typename T> |
| 45 | struct is_pointer_strong<__strong T*> { |
| 46 | static const bool value = true; |
| 47 | }; |
| 48 | |
| 49 | int check_ptr_strong1[is_pointer_strong<__strong id*>::value? 1 : -1]; |
| 50 | int check_ptr_strong2[is_pointer_strong<__weak id*>::value? -1 : 1]; |
| 51 | int check_ptr_strong3[is_pointer_strong<__autoreleasing id*>::value? -1 : 1]; |
| 52 | int check_ptr_strong4[is_pointer_strong<__unsafe_unretained id*>::value? -1 : 1]; |
| 53 | int check_ptr_strong5[is_pointer_strong<id>::value? -1 : 1]; |
| 54 | |
| 55 | // Check substitution into lifetime-qualified dependent types. |
| 56 | template<typename T> |
| 57 | struct make_strong_pointer { |
| 58 | typedef __strong T *type; |
| 59 | }; |
| 60 | |
Douglas Gregor | e559ca1 | 2011-06-17 22:11:49 +0000 | [diff] [blame] | 61 | template<typename T> |
| 62 | struct make_strong_pointer<__weak T> { |
| 63 | typedef __strong T *type; |
| 64 | }; |
| 65 | |
| 66 | template<typename T> |
| 67 | struct make_strong_pointer<__autoreleasing T> { |
| 68 | typedef __strong T *type; |
| 69 | }; |
| 70 | |
| 71 | template<typename T> |
| 72 | struct make_strong_pointer<__unsafe_unretained T> { |
| 73 | typedef __strong T *type; |
| 74 | }; |
| 75 | |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 76 | // Adding qualifiers |
| 77 | int check_make_strong1[is_same<make_strong_pointer<id>::type, __strong id *>::value ? 1 : -1]; |
| 78 | int check_make_strong2[is_same<make_strong_pointer<A*>::type, A* __strong *>::value ? 1 : -1]; |
| 79 | |
| 80 | // Adding redundant qualifiers |
| 81 | int check_make_strong3[is_same<make_strong_pointer<__strong id>::type, __strong id *>::value ? 1 : -1]; |
| 82 | int check_make_strong4[is_same<make_strong_pointer<__strong A*>::type, A* __strong *>::value ? 1 : -1]; |
| 83 | |
| 84 | // Adding nonsensical qualifiers. |
| 85 | int check_make_strong5[is_same<make_strong_pointer<int>::type, int *>::value ? 1 : -1]; |
Douglas Gregor | e559ca1 | 2011-06-17 22:11:49 +0000 | [diff] [blame] | 86 | int check_make_strong6[is_same<make_strong_pointer<__weak id>::type, __strong id *>::value ? 1 : -1]; |
| 87 | |
| 88 | template<typename T> |
| 89 | struct make_weak { |
| 90 | typedef __weak T type; |
| 91 | }; |
| 92 | |
| 93 | int check_make_weak0[is_same<make_weak<id>::type, __weak id>::value? 1 : -1]; |
| 94 | int check_make_weak1[is_same<make_weak<__strong id>::type, __weak id>::value? 1 : -1]; |
| 95 | int check_make_weak2[is_same<make_weak<__autoreleasing id>::type, __weak id>::value? 1 : -1]; |
| 96 | |
Douglas Gregor | 4020cae | 2011-06-17 23:16:24 +0000 | [diff] [blame^] | 97 | template<typename T> |
| 98 | struct make_weak_fail { |
| 99 | typedef T T_type; |
| 100 | typedef __weak T_type type; // expected-error{{the type 'T_type' (aka '__weak id') already has retainment attributes set on it}} \ |
| 101 | // expected-error{{the type 'T_type' (aka '__strong id') already has retainment attributes set on it}} |
| 102 | }; |
| 103 | |
| 104 | int check_make_weak_fail0[is_same<make_weak_fail<__weak id>::type, __weak id>::value? 1 : -1]; // expected-note{{in instantiation of template class 'make_weak_fail<__weak id>' requested here}} |
| 105 | |
| 106 | int check_make_weak_fail1[is_same<make_weak_fail<id>::type, __weak id>::value? -1 : 1]; // expected-note{{in instantiation of template class 'make_weak_fail<id>' requested here}} |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 107 | |
| 108 | // Check template argument deduction from function templates. |
| 109 | template<typename T> struct identity { }; |
| 110 | |
| 111 | template<typename T> identity<T> accept_strong_ptr(__strong T*); |
| 112 | template<typename T> identity<T> accept_strong_ref(__strong T&); |
| 113 | |
| 114 | template<typename T> identity<T> accept_any_ptr(T*); |
| 115 | template<typename T> identity<T> accept_any_ref(T&); |
| 116 | |
| 117 | void test_func_deduction_id() { |
| 118 | __strong id *sip; |
| 119 | __weak id *wip; |
| 120 | __autoreleasing id *aip; |
| 121 | __unsafe_unretained id *uip; |
| 122 | |
| 123 | identity<id> res1 = accept_strong_ptr(sip); |
| 124 | identity<__strong id> res2 = accept_any_ptr(sip); |
| 125 | |
| 126 | __strong id si; |
| 127 | __weak id wi; |
| 128 | __autoreleasing id ai; |
| 129 | __unsafe_unretained id ui; |
| 130 | identity<id> res3 = accept_strong_ref(si); |
| 131 | identity<__strong id> res4 = accept_any_ref(si); |
| 132 | identity<__weak id> res5 = accept_any_ref(wi); |
| 133 | identity<__autoreleasing id> res6 = accept_any_ref(ai); |
| 134 | identity<__unsafe_unretained id> res7 = accept_any_ref(ui); |
| 135 | } |
| 136 | |
| 137 | void test_func_deduction_A() { |
| 138 | __strong A * *sip; |
| 139 | __weak A * *wip; |
| 140 | __autoreleasing A * *aip; |
| 141 | __unsafe_unretained A * *uip; |
| 142 | |
| 143 | identity<A *> res1 = accept_strong_ptr(sip); |
| 144 | identity<__strong A *> res2 = accept_any_ptr(sip); |
| 145 | |
| 146 | __strong A * si; |
| 147 | __weak A * wi; |
| 148 | __autoreleasing A * ai; |
| 149 | __unsafe_unretained A * ui; |
| 150 | identity<A *> res3 = accept_strong_ref(si); |
| 151 | identity<__strong A *> res4 = accept_any_ref(si); |
| 152 | identity<__weak A *> res5 = accept_any_ref(wi); |
| 153 | identity<__autoreleasing A *> res6 = accept_any_ref(ai); |
| 154 | identity<__unsafe_unretained A *> res7 = accept_any_ref(ui); |
| 155 | } |
| 156 | |
| 157 | // Test partial ordering (qualified vs. non-qualified). |
| 158 | template<typename T> |
| 159 | struct classify_pointer_pointer { |
| 160 | static const unsigned value = 0; |
| 161 | }; |
| 162 | |
| 163 | template<typename T> |
| 164 | struct classify_pointer_pointer<T*> { |
| 165 | static const unsigned value = 1; |
| 166 | }; |
| 167 | |
| 168 | template<typename T> |
| 169 | struct classify_pointer_pointer<__strong T*> { |
| 170 | static const unsigned value = 2; |
| 171 | }; |
| 172 | |
| 173 | template<typename T> |
| 174 | struct classify_pointer_pointer<__weak T*> { |
| 175 | static const unsigned value = 3; |
| 176 | }; |
| 177 | |
| 178 | template<typename T> |
| 179 | struct classify_pointer_pointer<T&> { |
| 180 | static const unsigned value = 4; |
| 181 | }; |
| 182 | |
| 183 | template<typename T> |
| 184 | struct classify_pointer_pointer<__strong T&> { |
| 185 | static const unsigned value = 5; |
| 186 | }; |
| 187 | |
| 188 | template<typename T> |
| 189 | struct classify_pointer_pointer<__weak T&> { |
| 190 | static const unsigned value = 6; |
| 191 | }; |
| 192 | |
| 193 | int classify_ptr1[classify_pointer_pointer<int>::value == 0? 1 : -1]; |
| 194 | int classify_ptr2[classify_pointer_pointer<int *>::value == 1? 1 : -1]; |
| 195 | int classify_ptr3[classify_pointer_pointer<id __strong *>::value == 2? 1 : -1]; |
| 196 | int classify_ptr4[classify_pointer_pointer<id __weak *>::value == 3? 1 : -1]; |
| 197 | int classify_ptr5[classify_pointer_pointer<int&>::value == 4? 1 : -1]; |
| 198 | int classify_ptr6[classify_pointer_pointer<id __strong&>::value == 5? 1 : -1]; |
| 199 | int classify_ptr7[classify_pointer_pointer<id __weak&>::value == 6? 1 : -1]; |
| 200 | int classify_ptr8[classify_pointer_pointer<id __autoreleasing&>::value == 4? 1 : -1]; |
| 201 | int classify_ptr9[classify_pointer_pointer<id __unsafe_unretained&>::value == 4? 1 : -1]; |
| 202 | int classify_ptr10[classify_pointer_pointer<id __autoreleasing *>::value == 1? 1 : -1]; |
| 203 | int classify_ptr11[classify_pointer_pointer<id __unsafe_unretained *>::value == 1? 1 : -1]; |
| 204 | int classify_ptr12[classify_pointer_pointer<int *>::value == 1? 1 : -1]; |
| 205 | int classify_ptr13[classify_pointer_pointer<A * __strong *>::value == 2? 1 : -1]; |
| 206 | int classify_ptr14[classify_pointer_pointer<A * __weak *>::value == 3? 1 : -1]; |
| 207 | int classify_ptr15[classify_pointer_pointer<int&>::value == 4? 1 : -1]; |
| 208 | int classify_ptr16[classify_pointer_pointer<A * __strong&>::value == 5? 1 : -1]; |
| 209 | int classify_ptr17[classify_pointer_pointer<A * __weak&>::value == 6? 1 : -1]; |
| 210 | int classify_ptr18[classify_pointer_pointer<A * __autoreleasing&>::value == 4? 1 : -1]; |
| 211 | int classify_ptr19[classify_pointer_pointer<A * __unsafe_unretained&>::value == 4? 1 : -1]; |
| 212 | int classify_ptr20[classify_pointer_pointer<A * __autoreleasing *>::value == 1? 1 : -1]; |
| 213 | int classify_ptr21[classify_pointer_pointer<A * __unsafe_unretained *>::value == 1? 1 : -1]; |
| 214 | |
| 215 | template<typename T> int& qual_vs_unqual_ptr(__strong T*); |
| 216 | template<typename T> double& qual_vs_unqual_ptr(__weak T*); |
| 217 | template<typename T> float& qual_vs_unqual_ptr(T*); |
| 218 | template<typename T> int& qual_vs_unqual_ref(__strong T&); |
| 219 | template<typename T> double& qual_vs_unqual_ref(__weak T&); |
| 220 | template<typename T> float& qual_vs_unqual_ref(T&); |
| 221 | |
| 222 | void test_qual_vs_unqual_id() { |
| 223 | __strong id *sip; |
| 224 | __weak id *wip; |
| 225 | __autoreleasing id *aip; |
| 226 | __unsafe_unretained id *uip; |
| 227 | |
| 228 | int &ir1 = qual_vs_unqual_ptr(sip); |
| 229 | double &dr1 = qual_vs_unqual_ptr(wip); |
| 230 | float &fr1 = qual_vs_unqual_ptr(aip); |
| 231 | float &fr2 = qual_vs_unqual_ptr(uip); |
| 232 | |
| 233 | int &ir2 = qual_vs_unqual_ref(*sip); |
| 234 | double &dr2 = qual_vs_unqual_ref(*wip); |
| 235 | float &fr3 = qual_vs_unqual_ref(*aip); |
| 236 | float &fr4 = qual_vs_unqual_ref(*uip); |
| 237 | } |
| 238 | |
| 239 | void test_qual_vs_unqual_a() { |
| 240 | __strong A * *sap; |
| 241 | __weak A * *wap; |
| 242 | __autoreleasing A * *aap; |
| 243 | __unsafe_unretained A * *uap; |
| 244 | |
| 245 | int &ir1 = qual_vs_unqual_ptr(sap); |
| 246 | double &dr1 = qual_vs_unqual_ptr(wap); |
| 247 | float &fr1 = qual_vs_unqual_ptr(aap); |
| 248 | float &fr2 = qual_vs_unqual_ptr(uap); |
| 249 | |
| 250 | int &ir2 = qual_vs_unqual_ref(*sap); |
| 251 | double &dr2 = qual_vs_unqual_ref(*wap); |
| 252 | float &fr3 = qual_vs_unqual_ref(*aap); |
| 253 | float &fr4 = qual_vs_unqual_ref(*uap); |
| 254 | } |