1 // RUN: %clang_cc1 -fobjc-runtime-has-weak -fsyntax-only -fobjc-arc -verify -fblocks %s 2 3 @interface A 4 @end 5 6 @class NSString; 7 8 template<typename T, typename U> 9 struct is_same { 10 static const bool value = false; 11 }; 12 13 template<typename T> 14 struct is_same<T, T> { 15 static const bool value = true; 16 }; 17 18 // Instantiation for reference/pointer types that will get lifetime 19 // adjustments. 20 template<typename T> 21 struct X0 { 22 typedef T* pointer; // okay: ends up being strong. 23 typedef T& reference; // okay: ends up being strong 24 }; 25 26 void test_X0() { 27 X0<id> x0id; 28 X0<A*> x0a; 29 X0<__strong A*> x0sa; 30 31 id __strong *ptr; 32 id __strong val; 33 X0<__strong id>::pointer &ptr_ref = ptr; 34 X0<__strong id>::reference ref = val; 35 } 36 37 int check_infer_strong[is_same<id, __strong id>::value? 1 : -1]; 38 39 // Check template argument deduction (e.g., for specialization) using 40 // lifetime qualifiers. 41 template<typename T> 42 struct is_pointer_strong { 43 static const bool value = false; 44 }; 45 46 template<typename T> 47 struct is_pointer_strong<__strong T*> { 48 static const bool value = true; 49 }; 50 51 int check_ptr_strong1[is_pointer_strong<__strong id*>::value? 1 : -1]; 52 int check_ptr_strong2[is_pointer_strong<__weak id*>::value? -1 : 1]; 53 int check_ptr_strong3[is_pointer_strong<__autoreleasing id*>::value? -1 : 1]; 54 int check_ptr_strong4[is_pointer_strong<__unsafe_unretained id*>::value? -1 : 1]; 55 int check_ptr_strong5[is_pointer_strong<id>::value? -1 : 1]; 56 57 // Check substitution into lifetime-qualified dependent types. 58 template<typename T> 59 struct make_strong_pointer { 60 typedef __strong T *type; 61 }; 62 63 template<typename T> 64 struct make_strong_pointer<__weak T> { 65 typedef __strong T *type; 66 }; 67 68 template<typename T> 69 struct make_strong_pointer<__autoreleasing T> { 70 typedef __strong T *type; 71 }; 72 73 template<typename T> 74 struct make_strong_pointer<__unsafe_unretained T> { 75 typedef __strong T *type; 76 }; 77 78 // Adding qualifiers 79 int check_make_strong1[is_same<make_strong_pointer<id>::type, __strong id *>::value ? 1 : -1]; 80 int check_make_strong2[is_same<make_strong_pointer<A*>::type, A* __strong *>::value ? 1 : -1]; 81 82 // Adding redundant qualifiers 83 int check_make_strong3[is_same<make_strong_pointer<__strong id>::type, __strong id *>::value ? 1 : -1]; 84 int check_make_strong4[is_same<make_strong_pointer<__strong A*>::type, A* __strong *>::value ? 1 : -1]; 85 86 // Adding nonsensical qualifiers. 87 int check_make_strong5[is_same<make_strong_pointer<int>::type, int *>::value ? 1 : -1]; 88 int check_make_strong6[is_same<make_strong_pointer<__weak id>::type, __strong id *>::value ? 1 : -1]; 89 90 template<typename T> 91 struct make_weak { 92 typedef __weak T type; 93 }; 94 95 int check_make_weak0[is_same<make_weak<id>::type, __weak id>::value? 1 : -1]; 96 int check_make_weak1[is_same<make_weak<__strong id>::type, __weak id>::value? 1 : -1]; 97 int check_make_weak2[is_same<make_weak<__autoreleasing id>::type, __weak id>::value? 1 : -1]; 98 99 template<typename T> 100 struct make_weak_fail { 101 typedef T T_type; 102 typedef __weak T_type type; // expected-error{{the type 'T_type' (aka '__weak id') is already explicitly ownership-qualified}} \ 103 // expected-error{{the type 'T_type' (aka '__strong id') is already explicitly ownership-qualified}} 104 }; 105 106 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}} 107 108 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}} 109 110 // Check template argument deduction from function templates. 111 template<typename T> struct identity { }; 112 113 template<typename T> identity<T> accept_strong_ptr(__strong T*); 114 template<typename T> identity<T> accept_strong_ref(__strong T&); 115 116 template<typename T> identity<T> accept_any_ptr(T*); 117 template<typename T> identity<T> accept_any_ref(T&); 118 119 void test_func_deduction_id() { 120 __strong id *sip; 121 __weak id *wip; 122 __autoreleasing id *aip; 123 __unsafe_unretained id *uip; 124 125 identity<id> res1 = accept_strong_ptr(sip); 126 identity<__strong id> res2 = accept_any_ptr(sip); 127 128 __strong id si; 129 __weak id wi; 130 __autoreleasing id ai; 131 __unsafe_unretained id ui; 132 identity<id> res3 = accept_strong_ref(si); 133 identity<__strong id> res4 = accept_any_ref(si); 134 identity<__weak id> res5 = accept_any_ref(wi); 135 identity<__autoreleasing id> res6 = accept_any_ref(ai); 136 identity<__unsafe_unretained id> res7 = accept_any_ref(ui); 137 } 138 139 void test_func_deduction_A() { 140 __strong A * *sip; 141 __weak A * *wip; 142 __autoreleasing A * *aip; 143 __unsafe_unretained A * *uip; 144 145 identity<A *> res1 = accept_strong_ptr(sip); 146 identity<__strong A *> res2 = accept_any_ptr(sip); 147 148 __strong A * si; 149 __weak A * wi; 150 __autoreleasing A * ai; 151 __unsafe_unretained A * ui; 152 identity<A *> res3 = accept_strong_ref(si); 153 identity<__strong A *> res4 = accept_any_ref(si); 154 identity<__weak A *> res5 = accept_any_ref(wi); 155 identity<__autoreleasing A *> res6 = accept_any_ref(ai); 156 identity<__unsafe_unretained A *> res7 = accept_any_ref(ui); 157 } 158 159 // Test partial ordering (qualified vs. non-qualified). 160 template<typename T> 161 struct classify_pointer_pointer { 162 static const unsigned value = 0; 163 }; 164 165 template<typename T> 166 struct classify_pointer_pointer<T*> { 167 static const unsigned value = 1; 168 }; 169 170 template<typename T> 171 struct classify_pointer_pointer<__strong T*> { 172 static const unsigned value = 2; 173 }; 174 175 template<typename T> 176 struct classify_pointer_pointer<__weak T*> { 177 static const unsigned value = 3; 178 }; 179 180 template<typename T> 181 struct classify_pointer_pointer<T&> { 182 static const unsigned value = 4; 183 }; 184 185 template<typename T> 186 struct classify_pointer_pointer<__strong T&> { 187 static const unsigned value = 5; 188 }; 189 190 template<typename T> 191 struct classify_pointer_pointer<__weak T&> { 192 static const unsigned value = 6; 193 }; 194 195 int classify_ptr1[classify_pointer_pointer<int>::value == 0? 1 : -1]; 196 int classify_ptr2[classify_pointer_pointer<int *>::value == 1? 1 : -1]; 197 int classify_ptr3[classify_pointer_pointer<id __strong *>::value == 2? 1 : -1]; 198 int classify_ptr4[classify_pointer_pointer<id __weak *>::value == 3? 1 : -1]; 199 int classify_ptr5[classify_pointer_pointer<int&>::value == 4? 1 : -1]; 200 int classify_ptr6[classify_pointer_pointer<id __strong&>::value == 5? 1 : -1]; 201 int classify_ptr7[classify_pointer_pointer<id __weak&>::value == 6? 1 : -1]; 202 int classify_ptr8[classify_pointer_pointer<id __autoreleasing&>::value == 4? 1 : -1]; 203 int classify_ptr9[classify_pointer_pointer<id __unsafe_unretained&>::value == 4? 1 : -1]; 204 int classify_ptr10[classify_pointer_pointer<id __autoreleasing *>::value == 1? 1 : -1]; 205 int classify_ptr11[classify_pointer_pointer<id __unsafe_unretained *>::value == 1? 1 : -1]; 206 int classify_ptr12[classify_pointer_pointer<int *>::value == 1? 1 : -1]; 207 int classify_ptr13[classify_pointer_pointer<A * __strong *>::value == 2? 1 : -1]; 208 int classify_ptr14[classify_pointer_pointer<A * __weak *>::value == 3? 1 : -1]; 209 int classify_ptr15[classify_pointer_pointer<int&>::value == 4? 1 : -1]; 210 int classify_ptr16[classify_pointer_pointer<A * __strong&>::value == 5? 1 : -1]; 211 int classify_ptr17[classify_pointer_pointer<A * __weak&>::value == 6? 1 : -1]; 212 int classify_ptr18[classify_pointer_pointer<A * __autoreleasing&>::value == 4? 1 : -1]; 213 int classify_ptr19[classify_pointer_pointer<A * __unsafe_unretained&>::value == 4? 1 : -1]; 214 int classify_ptr20[classify_pointer_pointer<A * __autoreleasing *>::value == 1? 1 : -1]; 215 int classify_ptr21[classify_pointer_pointer<A * __unsafe_unretained *>::value == 1? 1 : -1]; 216 217 template<typename T> int& qual_vs_unqual_ptr(__strong T*); 218 template<typename T> double& qual_vs_unqual_ptr(__weak T*); 219 template<typename T> float& qual_vs_unqual_ptr(T*); 220 template<typename T> int& qual_vs_unqual_ref(__strong T&); 221 template<typename T> double& qual_vs_unqual_ref(__weak T&); 222 template<typename T> float& qual_vs_unqual_ref(T&); 223 224 void test_qual_vs_unqual_id() { 225 __strong id *sip; 226 __weak id *wip; 227 __autoreleasing id *aip; 228 __unsafe_unretained id *uip; 229 230 int &ir1 = qual_vs_unqual_ptr(sip); 231 double &dr1 = qual_vs_unqual_ptr(wip); 232 float &fr1 = qual_vs_unqual_ptr(aip); 233 float &fr2 = qual_vs_unqual_ptr(uip); 234 235 int &ir2 = qual_vs_unqual_ref(*sip); 236 double &dr2 = qual_vs_unqual_ref(*wip); 237 float &fr3 = qual_vs_unqual_ref(*aip); 238 float &fr4 = qual_vs_unqual_ref(*uip); 239 } 240 241 void test_qual_vs_unqual_a() { 242 __strong A * *sap; 243 __weak A * *wap; 244 __autoreleasing A * *aap; 245 __unsafe_unretained A * *uap; 246 247 int &ir1 = qual_vs_unqual_ptr(sap); 248 double &dr1 = qual_vs_unqual_ptr(wap); 249 float &fr1 = qual_vs_unqual_ptr(aap); 250 float &fr2 = qual_vs_unqual_ptr(uap); 251 252 int &ir2 = qual_vs_unqual_ref(*sap); 253 double &dr2 = qual_vs_unqual_ref(*wap); 254 float &fr3 = qual_vs_unqual_ref(*aap); 255 float &fr4 = qual_vs_unqual_ref(*uap); 256 } 257 258 namespace rdar9828157 { 259 // Template argument deduction involving lifetime qualifiers and 260 // non-lifetime types. 261 class A { }; 262 263 template<typename T> float& f(T&); 264 template<typename T> int& f(__strong T&); 265 template<typename T> double& f(__weak T&); 266 267 void test_f(A* ap) { 268 float &fr = (f)(ap); 269 } 270 } 271 272 namespace rdar10862386 { 273 // More deduction with lifetime qualifiers. 274 template <typename T> 275 int testing(const T &) { 276 return 1; 277 } 278 279 void test() { 280 testing(1); 281 testing("hi"); 282 testing<NSString *>(@"hi"); 283 testing(@"hi"); 284 } 285 } 286 287 namespace rdar12367446 { 288 template <class T> class A; 289 template <class R> class A<R()> {}; 290 291 void test() { 292 A<id()> value; 293 } 294 } 295
