1// RUN: %clang_cc1 -fobjc-runtime-has-weak -fsyntax-only -fobjc-arc -verify -fblocks %s 2 3@interface A 4@end 5 6template<typename T, typename U> 7struct is_same { 8 static const bool value = false; 9}; 10 11template<typename T> 12struct is_same<T, T> { 13 static const bool value = true; 14}; 15 16// Instantiation for reference/pointer types that will get lifetime 17// adjustments. 18template<typename T> 19struct X0 { 20 typedef T* pointer; // okay: ends up being strong. 21 typedef T& reference; // okay: ends up being strong 22}; 23 24void test_X0() { 25 X0<id> x0id; 26 X0<A*> x0a; 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 35int check_infer_strong[is_same<id, __strong id>::value? 1 : -1]; 36 37// Check template argument deduction (e.g., for specialization) using 38// lifetime qualifiers. 39template<typename T> 40struct is_pointer_strong { 41 static const bool value = false; 42}; 43 44template<typename T> 45struct is_pointer_strong<__strong T*> { 46 static const bool value = true; 47}; 48 49int check_ptr_strong1[is_pointer_strong<__strong id*>::value? 1 : -1]; 50int check_ptr_strong2[is_pointer_strong<__weak id*>::value? -1 : 1]; 51int check_ptr_strong3[is_pointer_strong<__autoreleasing id*>::value? -1 : 1]; 52int check_ptr_strong4[is_pointer_strong<__unsafe_unretained id*>::value? -1 : 1]; 53int check_ptr_strong5[is_pointer_strong<id>::value? -1 : 1]; 54 55// Check substitution into lifetime-qualified dependent types. 56template<typename T> 57struct make_strong_pointer { 58 typedef __strong T *type; 59}; 60 61template<typename T> 62struct make_strong_pointer<__weak T> { 63 typedef __strong T *type; 64}; 65 66template<typename T> 67struct make_strong_pointer<__autoreleasing T> { 68 typedef __strong T *type; 69}; 70 71template<typename T> 72struct make_strong_pointer<__unsafe_unretained T> { 73 typedef __strong T *type; 74}; 75 76// Adding qualifiers 77int check_make_strong1[is_same<make_strong_pointer<id>::type, __strong id *>::value ? 1 : -1]; 78int check_make_strong2[is_same<make_strong_pointer<A*>::type, A* __strong *>::value ? 1 : -1]; 79 80// Adding redundant qualifiers 81int check_make_strong3[is_same<make_strong_pointer<__strong id>::type, __strong id *>::value ? 1 : -1]; 82int check_make_strong4[is_same<make_strong_pointer<__strong A*>::type, A* __strong *>::value ? 1 : -1]; 83 84// Adding nonsensical qualifiers. 85int check_make_strong5[is_same<make_strong_pointer<int>::type, int *>::value ? 1 : -1]; 86int check_make_strong6[is_same<make_strong_pointer<__weak id>::type, __strong id *>::value ? 1 : -1]; 87 88template<typename T> 89struct make_weak { 90 typedef __weak T type; 91}; 92 93int check_make_weak0[is_same<make_weak<id>::type, __weak id>::value? 1 : -1]; 94int check_make_weak1[is_same<make_weak<__strong id>::type, __weak id>::value? 1 : -1]; 95int check_make_weak2[is_same<make_weak<__autoreleasing id>::type, __weak id>::value? 1 : -1]; 96 97template<typename T> 98struct make_weak_fail { 99 typedef T T_type; 100 typedef __weak T_type type; // expected-error{{the type 'T_type' (aka '__weak id') is already explicitly ownership-qualified}} \ 101 // expected-error{{the type 'T_type' (aka '__strong id') is already explicitly ownership-qualified}} 102}; 103 104int 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 106int 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}} 107 108// Check template argument deduction from function templates. 109template<typename T> struct identity { }; 110 111template<typename T> identity<T> accept_strong_ptr(__strong T*); 112template<typename T> identity<T> accept_strong_ref(__strong T&); 113 114template<typename T> identity<T> accept_any_ptr(T*); 115template<typename T> identity<T> accept_any_ref(T&); 116 117void 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 137void 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). 158template<typename T> 159struct classify_pointer_pointer { 160 static const unsigned value = 0; 161}; 162 163template<typename T> 164struct classify_pointer_pointer<T*> { 165 static const unsigned value = 1; 166}; 167 168template<typename T> 169struct classify_pointer_pointer<__strong T*> { 170 static const unsigned value = 2; 171}; 172 173template<typename T> 174struct classify_pointer_pointer<__weak T*> { 175 static const unsigned value = 3; 176}; 177 178template<typename T> 179struct classify_pointer_pointer<T&> { 180 static const unsigned value = 4; 181}; 182 183template<typename T> 184struct classify_pointer_pointer<__strong T&> { 185 static const unsigned value = 5; 186}; 187 188template<typename T> 189struct classify_pointer_pointer<__weak T&> { 190 static const unsigned value = 6; 191}; 192 193int classify_ptr1[classify_pointer_pointer<int>::value == 0? 1 : -1]; 194int classify_ptr2[classify_pointer_pointer<int *>::value == 1? 1 : -1]; 195int classify_ptr3[classify_pointer_pointer<id __strong *>::value == 2? 1 : -1]; 196int classify_ptr4[classify_pointer_pointer<id __weak *>::value == 3? 1 : -1]; 197int classify_ptr5[classify_pointer_pointer<int&>::value == 4? 1 : -1]; 198int classify_ptr6[classify_pointer_pointer<id __strong&>::value == 5? 1 : -1]; 199int classify_ptr7[classify_pointer_pointer<id __weak&>::value == 6? 1 : -1]; 200int classify_ptr8[classify_pointer_pointer<id __autoreleasing&>::value == 4? 1 : -1]; 201int classify_ptr9[classify_pointer_pointer<id __unsafe_unretained&>::value == 4? 1 : -1]; 202int classify_ptr10[classify_pointer_pointer<id __autoreleasing *>::value == 1? 1 : -1]; 203int classify_ptr11[classify_pointer_pointer<id __unsafe_unretained *>::value == 1? 1 : -1]; 204int classify_ptr12[classify_pointer_pointer<int *>::value == 1? 1 : -1]; 205int classify_ptr13[classify_pointer_pointer<A * __strong *>::value == 2? 1 : -1]; 206int classify_ptr14[classify_pointer_pointer<A * __weak *>::value == 3? 1 : -1]; 207int classify_ptr15[classify_pointer_pointer<int&>::value == 4? 1 : -1]; 208int classify_ptr16[classify_pointer_pointer<A * __strong&>::value == 5? 1 : -1]; 209int classify_ptr17[classify_pointer_pointer<A * __weak&>::value == 6? 1 : -1]; 210int classify_ptr18[classify_pointer_pointer<A * __autoreleasing&>::value == 4? 1 : -1]; 211int classify_ptr19[classify_pointer_pointer<A * __unsafe_unretained&>::value == 4? 1 : -1]; 212int classify_ptr20[classify_pointer_pointer<A * __autoreleasing *>::value == 1? 1 : -1]; 213int classify_ptr21[classify_pointer_pointer<A * __unsafe_unretained *>::value == 1? 1 : -1]; 214 215template<typename T> int& qual_vs_unqual_ptr(__strong T*); 216template<typename T> double& qual_vs_unqual_ptr(__weak T*); 217template<typename T> float& qual_vs_unqual_ptr(T*); 218template<typename T> int& qual_vs_unqual_ref(__strong T&); 219template<typename T> double& qual_vs_unqual_ref(__weak T&); 220template<typename T> float& qual_vs_unqual_ref(T&); 221 222void 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 239void 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} 255 256namespace rdar9828157 { 257 // Template argument deduction involving lifetime qualifiers and 258 // non-lifetime types. 259 class A { }; 260 261 template<typename T> float& f(T&); 262 template<typename T> int& f(__strong T&); 263 template<typename T> double& f(__weak T&); 264 265 void test_f(A* ap) { 266 float &fr = (f)(ap); 267 } 268} 269