Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame] | 1 | // RUN: %clang_cc1 -fobjc-runtime-has-weak -fsyntax-only -fobjc-arc -verify -fblocks -std=c++11 %s |
| 2 | |
| 3 | #define CONSUMED __attribute__((ns_consumed)) |
| 4 | #define PRODUCED __attribute__((ns_returns_retained)) |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 5 | |
| 6 | @interface A |
| 7 | @end |
| 8 | |
Douglas Gregor | b251302 | 2012-07-18 00:14:59 +0000 | [diff] [blame] | 9 | @class NSString; |
| 10 | |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 11 | template<typename T, typename U> |
| 12 | struct is_same { |
| 13 | static const bool value = false; |
| 14 | }; |
| 15 | |
| 16 | template<typename T> |
| 17 | struct is_same<T, T> { |
| 18 | static const bool value = true; |
| 19 | }; |
| 20 | |
| 21 | // Instantiation for reference/pointer types that will get lifetime |
| 22 | // adjustments. |
| 23 | template<typename T> |
| 24 | struct X0 { |
Douglas Gregor | e559ca1 | 2011-06-17 22:11:49 +0000 | [diff] [blame] | 25 | typedef T* pointer; // okay: ends up being strong. |
| 26 | typedef T& reference; // okay: ends up being strong |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 27 | }; |
| 28 | |
| 29 | void test_X0() { |
Douglas Gregor | e559ca1 | 2011-06-17 22:11:49 +0000 | [diff] [blame] | 30 | X0<id> x0id; |
| 31 | X0<A*> x0a; |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 32 | X0<__strong A*> x0sa; |
| 33 | |
| 34 | id __strong *ptr; |
| 35 | id __strong val; |
| 36 | X0<__strong id>::pointer &ptr_ref = ptr; |
| 37 | X0<__strong id>::reference ref = val; |
| 38 | } |
| 39 | |
Douglas Gregor | e559ca1 | 2011-06-17 22:11:49 +0000 | [diff] [blame] | 40 | int check_infer_strong[is_same<id, __strong id>::value? 1 : -1]; |
| 41 | |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 42 | // Check template argument deduction (e.g., for specialization) using |
| 43 | // lifetime qualifiers. |
| 44 | template<typename T> |
| 45 | struct is_pointer_strong { |
| 46 | static const bool value = false; |
| 47 | }; |
| 48 | |
| 49 | template<typename T> |
| 50 | struct is_pointer_strong<__strong T*> { |
| 51 | static const bool value = true; |
| 52 | }; |
| 53 | |
| 54 | int check_ptr_strong1[is_pointer_strong<__strong id*>::value? 1 : -1]; |
| 55 | int check_ptr_strong2[is_pointer_strong<__weak id*>::value? -1 : 1]; |
| 56 | int check_ptr_strong3[is_pointer_strong<__autoreleasing id*>::value? -1 : 1]; |
| 57 | int check_ptr_strong4[is_pointer_strong<__unsafe_unretained id*>::value? -1 : 1]; |
| 58 | int check_ptr_strong5[is_pointer_strong<id>::value? -1 : 1]; |
| 59 | |
| 60 | // Check substitution into lifetime-qualified dependent types. |
| 61 | template<typename T> |
| 62 | struct make_strong_pointer { |
| 63 | typedef __strong T *type; |
| 64 | }; |
| 65 | |
Douglas Gregor | e559ca1 | 2011-06-17 22:11:49 +0000 | [diff] [blame] | 66 | template<typename T> |
| 67 | struct make_strong_pointer<__weak T> { |
| 68 | typedef __strong T *type; |
| 69 | }; |
| 70 | |
| 71 | template<typename T> |
| 72 | struct make_strong_pointer<__autoreleasing T> { |
| 73 | typedef __strong T *type; |
| 74 | }; |
| 75 | |
| 76 | template<typename T> |
| 77 | struct make_strong_pointer<__unsafe_unretained T> { |
| 78 | typedef __strong T *type; |
| 79 | }; |
| 80 | |
John McCall | f85e193 | 2011-06-15 23:02:42 +0000 | [diff] [blame] | 81 | // Adding qualifiers |
| 82 | int check_make_strong1[is_same<make_strong_pointer<id>::type, __strong id *>::value ? 1 : -1]; |
| 83 | int check_make_strong2[is_same<make_strong_pointer<A*>::type, A* __strong *>::value ? 1 : -1]; |
| 84 | |
| 85 | // Adding redundant qualifiers |
| 86 | int check_make_strong3[is_same<make_strong_pointer<__strong id>::type, __strong id *>::value ? 1 : -1]; |
| 87 | int check_make_strong4[is_same<make_strong_pointer<__strong A*>::type, A* __strong *>::value ? 1 : -1]; |
| 88 | |
| 89 | // Adding nonsensical qualifiers. |
| 90 | 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] | 91 | int check_make_strong6[is_same<make_strong_pointer<__weak id>::type, __strong id *>::value ? 1 : -1]; |
| 92 | |
| 93 | template<typename T> |
| 94 | struct make_weak { |
| 95 | typedef __weak T type; |
| 96 | }; |
| 97 | |
| 98 | int check_make_weak0[is_same<make_weak<id>::type, __weak id>::value? 1 : -1]; |
| 99 | int check_make_weak1[is_same<make_weak<__strong id>::type, __weak id>::value? 1 : -1]; |
| 100 | int check_make_weak2[is_same<make_weak<__autoreleasing id>::type, __weak id>::value? 1 : -1]; |
| 101 | |
Douglas Gregor | 4020cae | 2011-06-17 23:16:24 +0000 | [diff] [blame] | 102 | template<typename T> |
| 103 | struct make_weak_fail { |
| 104 | typedef T T_type; |
John McCall | d85bf9d | 2012-02-08 00:46:41 +0000 | [diff] [blame] | 105 | typedef __weak T_type type; // expected-error{{the type 'T_type' (aka '__weak id') is already explicitly ownership-qualified}} \ |
| 106 | // expected-error{{the type 'T_type' (aka '__strong id') is already explicitly ownership-qualified}} |
Douglas Gregor | 4020cae | 2011-06-17 23:16:24 +0000 | [diff] [blame] | 107 | }; |
| 108 | |
| 109 | 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}} |
| 110 | |
| 111 | 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] | 112 | |
| 113 | // Check template argument deduction from function templates. |
| 114 | template<typename T> struct identity { }; |
| 115 | |
| 116 | template<typename T> identity<T> accept_strong_ptr(__strong T*); |
| 117 | template<typename T> identity<T> accept_strong_ref(__strong T&); |
| 118 | |
| 119 | template<typename T> identity<T> accept_any_ptr(T*); |
| 120 | template<typename T> identity<T> accept_any_ref(T&); |
| 121 | |
| 122 | void test_func_deduction_id() { |
| 123 | __strong id *sip; |
| 124 | __weak id *wip; |
| 125 | __autoreleasing id *aip; |
| 126 | __unsafe_unretained id *uip; |
| 127 | |
| 128 | identity<id> res1 = accept_strong_ptr(sip); |
| 129 | identity<__strong id> res2 = accept_any_ptr(sip); |
| 130 | |
| 131 | __strong id si; |
| 132 | __weak id wi; |
| 133 | __autoreleasing id ai; |
| 134 | __unsafe_unretained id ui; |
| 135 | identity<id> res3 = accept_strong_ref(si); |
| 136 | identity<__strong id> res4 = accept_any_ref(si); |
| 137 | identity<__weak id> res5 = accept_any_ref(wi); |
| 138 | identity<__autoreleasing id> res6 = accept_any_ref(ai); |
| 139 | identity<__unsafe_unretained id> res7 = accept_any_ref(ui); |
| 140 | } |
| 141 | |
| 142 | void test_func_deduction_A() { |
| 143 | __strong A * *sip; |
| 144 | __weak A * *wip; |
| 145 | __autoreleasing A * *aip; |
| 146 | __unsafe_unretained A * *uip; |
| 147 | |
| 148 | identity<A *> res1 = accept_strong_ptr(sip); |
| 149 | identity<__strong A *> res2 = accept_any_ptr(sip); |
| 150 | |
| 151 | __strong A * si; |
| 152 | __weak A * wi; |
| 153 | __autoreleasing A * ai; |
| 154 | __unsafe_unretained A * ui; |
| 155 | identity<A *> res3 = accept_strong_ref(si); |
| 156 | identity<__strong A *> res4 = accept_any_ref(si); |
| 157 | identity<__weak A *> res5 = accept_any_ref(wi); |
| 158 | identity<__autoreleasing A *> res6 = accept_any_ref(ai); |
| 159 | identity<__unsafe_unretained A *> res7 = accept_any_ref(ui); |
| 160 | } |
| 161 | |
| 162 | // Test partial ordering (qualified vs. non-qualified). |
| 163 | template<typename T> |
| 164 | struct classify_pointer_pointer { |
| 165 | static const unsigned value = 0; |
| 166 | }; |
| 167 | |
| 168 | template<typename T> |
| 169 | struct classify_pointer_pointer<T*> { |
| 170 | static const unsigned value = 1; |
| 171 | }; |
| 172 | |
| 173 | template<typename T> |
| 174 | struct classify_pointer_pointer<__strong T*> { |
| 175 | static const unsigned value = 2; |
| 176 | }; |
| 177 | |
| 178 | template<typename T> |
| 179 | struct classify_pointer_pointer<__weak T*> { |
| 180 | static const unsigned value = 3; |
| 181 | }; |
| 182 | |
| 183 | template<typename T> |
| 184 | struct classify_pointer_pointer<T&> { |
| 185 | static const unsigned value = 4; |
| 186 | }; |
| 187 | |
| 188 | template<typename T> |
| 189 | struct classify_pointer_pointer<__strong T&> { |
| 190 | static const unsigned value = 5; |
| 191 | }; |
| 192 | |
| 193 | template<typename T> |
| 194 | struct classify_pointer_pointer<__weak T&> { |
| 195 | static const unsigned value = 6; |
| 196 | }; |
| 197 | |
| 198 | int classify_ptr1[classify_pointer_pointer<int>::value == 0? 1 : -1]; |
| 199 | int classify_ptr2[classify_pointer_pointer<int *>::value == 1? 1 : -1]; |
| 200 | int classify_ptr3[classify_pointer_pointer<id __strong *>::value == 2? 1 : -1]; |
| 201 | int classify_ptr4[classify_pointer_pointer<id __weak *>::value == 3? 1 : -1]; |
| 202 | int classify_ptr5[classify_pointer_pointer<int&>::value == 4? 1 : -1]; |
| 203 | int classify_ptr6[classify_pointer_pointer<id __strong&>::value == 5? 1 : -1]; |
| 204 | int classify_ptr7[classify_pointer_pointer<id __weak&>::value == 6? 1 : -1]; |
| 205 | int classify_ptr8[classify_pointer_pointer<id __autoreleasing&>::value == 4? 1 : -1]; |
| 206 | int classify_ptr9[classify_pointer_pointer<id __unsafe_unretained&>::value == 4? 1 : -1]; |
| 207 | int classify_ptr10[classify_pointer_pointer<id __autoreleasing *>::value == 1? 1 : -1]; |
| 208 | int classify_ptr11[classify_pointer_pointer<id __unsafe_unretained *>::value == 1? 1 : -1]; |
| 209 | int classify_ptr12[classify_pointer_pointer<int *>::value == 1? 1 : -1]; |
| 210 | int classify_ptr13[classify_pointer_pointer<A * __strong *>::value == 2? 1 : -1]; |
| 211 | int classify_ptr14[classify_pointer_pointer<A * __weak *>::value == 3? 1 : -1]; |
| 212 | int classify_ptr15[classify_pointer_pointer<int&>::value == 4? 1 : -1]; |
| 213 | int classify_ptr16[classify_pointer_pointer<A * __strong&>::value == 5? 1 : -1]; |
| 214 | int classify_ptr17[classify_pointer_pointer<A * __weak&>::value == 6? 1 : -1]; |
| 215 | int classify_ptr18[classify_pointer_pointer<A * __autoreleasing&>::value == 4? 1 : -1]; |
| 216 | int classify_ptr19[classify_pointer_pointer<A * __unsafe_unretained&>::value == 4? 1 : -1]; |
| 217 | int classify_ptr20[classify_pointer_pointer<A * __autoreleasing *>::value == 1? 1 : -1]; |
| 218 | int classify_ptr21[classify_pointer_pointer<A * __unsafe_unretained *>::value == 1? 1 : -1]; |
| 219 | |
| 220 | template<typename T> int& qual_vs_unqual_ptr(__strong T*); |
| 221 | template<typename T> double& qual_vs_unqual_ptr(__weak T*); |
| 222 | template<typename T> float& qual_vs_unqual_ptr(T*); |
| 223 | template<typename T> int& qual_vs_unqual_ref(__strong T&); |
| 224 | template<typename T> double& qual_vs_unqual_ref(__weak T&); |
| 225 | template<typename T> float& qual_vs_unqual_ref(T&); |
| 226 | |
| 227 | void test_qual_vs_unqual_id() { |
| 228 | __strong id *sip; |
| 229 | __weak id *wip; |
| 230 | __autoreleasing id *aip; |
| 231 | __unsafe_unretained id *uip; |
| 232 | |
| 233 | int &ir1 = qual_vs_unqual_ptr(sip); |
| 234 | double &dr1 = qual_vs_unqual_ptr(wip); |
| 235 | float &fr1 = qual_vs_unqual_ptr(aip); |
| 236 | float &fr2 = qual_vs_unqual_ptr(uip); |
| 237 | |
| 238 | int &ir2 = qual_vs_unqual_ref(*sip); |
| 239 | double &dr2 = qual_vs_unqual_ref(*wip); |
| 240 | float &fr3 = qual_vs_unqual_ref(*aip); |
| 241 | float &fr4 = qual_vs_unqual_ref(*uip); |
| 242 | } |
| 243 | |
| 244 | void test_qual_vs_unqual_a() { |
| 245 | __strong A * *sap; |
| 246 | __weak A * *wap; |
| 247 | __autoreleasing A * *aap; |
| 248 | __unsafe_unretained A * *uap; |
| 249 | |
| 250 | int &ir1 = qual_vs_unqual_ptr(sap); |
| 251 | double &dr1 = qual_vs_unqual_ptr(wap); |
| 252 | float &fr1 = qual_vs_unqual_ptr(aap); |
| 253 | float &fr2 = qual_vs_unqual_ptr(uap); |
| 254 | |
| 255 | int &ir2 = qual_vs_unqual_ref(*sap); |
| 256 | double &dr2 = qual_vs_unqual_ref(*wap); |
| 257 | float &fr3 = qual_vs_unqual_ref(*aap); |
| 258 | float &fr4 = qual_vs_unqual_ref(*uap); |
| 259 | } |
Douglas Gregor | da8b249 | 2011-07-26 14:53:44 +0000 | [diff] [blame] | 260 | |
| 261 | namespace rdar9828157 { |
| 262 | // Template argument deduction involving lifetime qualifiers and |
| 263 | // non-lifetime types. |
| 264 | class A { }; |
| 265 | |
| 266 | template<typename T> float& f(T&); |
| 267 | template<typename T> int& f(__strong T&); |
| 268 | template<typename T> double& f(__weak T&); |
| 269 | |
| 270 | void test_f(A* ap) { |
| 271 | float &fr = (f)(ap); |
| 272 | } |
| 273 | } |
Douglas Gregor | b251302 | 2012-07-18 00:14:59 +0000 | [diff] [blame] | 274 | |
| 275 | namespace rdar10862386 { |
| 276 | // More deduction with lifetime qualifiers. |
| 277 | template <typename T> |
| 278 | int testing(const T &) { |
| 279 | return 1; |
| 280 | } |
| 281 | |
| 282 | void test() { |
| 283 | testing(1); |
| 284 | testing("hi"); |
| 285 | testing<NSString *>(@"hi"); |
| 286 | testing(@"hi"); |
| 287 | } |
| 288 | } |
Douglas Gregor | 02dd798 | 2013-01-17 23:36:45 +0000 | [diff] [blame] | 289 | |
| 290 | namespace rdar12367446 { |
| 291 | template <class T> class A; |
| 292 | template <class R> class A<R()> {}; |
| 293 | |
| 294 | void test() { |
| 295 | A<id()> value; |
| 296 | } |
| 297 | } |
Douglas Gregor | 3940e3b | 2013-11-08 02:04:24 +0000 | [diff] [blame] | 298 | |
| 299 | namespace rdar14467941 { |
| 300 | template<typename T> int &takePtr(const T &); |
| 301 | template<typename T> float &takePtr(T * const &); |
| 302 | |
| 303 | void testTakePtr(A *a) { |
| 304 | float &fr1 = takePtr(a); |
| 305 | float &fr2 = takePtr<A>(a); |
| 306 | } |
| 307 | } |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 308 | |
| 309 | namespace rdar15713945 { |
| 310 | template <class T> int &f(__strong T &); |
| 311 | template <class T> float &f(__weak T &); |
| 312 | template <class T> double &f(__unsafe_unretained T &); |
| 313 | template <class T> char &f(T &); |
| 314 | |
| 315 | void foo() { |
| 316 | __strong NSString * const strong = 0; |
| 317 | int &ir = (f)(strong); |
| 318 | __weak NSString * const weak = 0; |
| 319 | float &fr = (f)(weak); |
| 320 | __unsafe_unretained NSString * const unsafe = 0; |
| 321 | double &dr = (f)(unsafe); |
| 322 | } |
| 323 | } |
Pirama Arumuga Nainar | 4967a71 | 2016-09-19 22:19:55 -0700 | [diff] [blame] | 324 | |
| 325 | namespace consumed { |
| 326 | void take_yes_no(void (&)(id CONSUMED, id)); // expected-note 2 {{candidate function not viable}} |
| 327 | void take_no_yes(void (&)(id, CONSUMED id)); // expected-note 2 {{candidate function not viable}} |
| 328 | void take_yes_yes(void (&)(CONSUMED id, CONSUMED id)); // expected-note 2 {{candidate function not viable}} |
| 329 | |
| 330 | template <class... As> void consumes_first(id CONSUMED, As...); |
| 331 | void test1() { |
| 332 | take_yes_no(consumes_first<id>); |
| 333 | take_no_yes(consumes_first<id>); // expected-error {{no matching function}} |
| 334 | take_yes_yes(consumes_first<id>); // expected-error {{no matching function}} |
| 335 | } |
| 336 | |
| 337 | template <class... As> void consumes_rest(id, CONSUMED As...); |
| 338 | void test2() { |
| 339 | take_yes_no(consumes_rest<id>); // expected-error {{no matching function}} |
| 340 | take_no_yes(consumes_rest<id>); |
| 341 | take_yes_yes(consumes_rest<id>); // expected-error {{no matching function}} |
| 342 | } |
| 343 | |
| 344 | template <class T, class U> void consumes_two(CONSUMED T, CONSUMED U); |
| 345 | void test3() { |
| 346 | take_yes_no(consumes_two); // expected-error {{no matching function}} |
| 347 | take_no_yes(consumes_two); // expected-error {{no matching function}} |
| 348 | take_yes_yes(consumes_two); |
| 349 | } |
| 350 | } |
| 351 | |
| 352 | namespace consumed_nested { |
| 353 | void take_yes_no(void (&)(id CONSUMED, id)); // expected-note 4 {{candidate function not viable}} |
| 354 | void take_no_yes(void (&)(id, CONSUMED id)); // expected-note 4 {{candidate function not viable}} |
| 355 | void take_yes_yes(void (&)(CONSUMED id, CONSUMED id)); // expected-note 4 {{candidate function not viable}} |
| 356 | |
| 357 | template <unsigned N> struct consumes_first { |
| 358 | template <class... As> static void fn(id CONSUMED, As...); |
| 359 | }; |
| 360 | void test1() { |
| 361 | take_yes_no(consumes_first<1>::fn<id>); |
| 362 | take_no_yes(consumes_first<2>::fn<id>); // expected-error {{no matching function}} |
| 363 | take_yes_yes(consumes_first<3>::fn<id>); // expected-error {{no matching function}} |
| 364 | take_yes_no(consumes_first<4>::fn); |
| 365 | take_no_yes(consumes_first<5>::fn); // expected-error {{no matching function}} |
| 366 | take_yes_yes(consumes_first<6>::fn); // expected-error {{no matching function}} |
| 367 | } |
| 368 | |
| 369 | template <unsigned N> struct consumes_rest { |
| 370 | template <class... As> static void fn(id, CONSUMED As...); |
| 371 | }; |
| 372 | void test2() { |
| 373 | take_yes_no(consumes_rest<1>::fn<id>); // expected-error {{no matching function}} |
| 374 | take_no_yes(consumes_rest<2>::fn<id>); |
| 375 | take_yes_yes(consumes_rest<3>::fn<id>); // expected-error {{no matching function}} |
| 376 | take_yes_no(consumes_rest<4>::fn<id>); // expected-error {{no matching function}} |
| 377 | take_no_yes(consumes_rest<5>::fn<id>); |
| 378 | take_yes_yes(consumes_rest<6>::fn<id>); // expected-error {{no matching function}} |
| 379 | } |
| 380 | |
| 381 | template <unsigned N> struct consumes_two { |
| 382 | template <class T, class U> static void fn(CONSUMED T, CONSUMED U); |
| 383 | }; |
| 384 | void test3() { |
| 385 | take_yes_no(consumes_two<1>::fn<id, id>); // expected-error {{no matching function}} |
| 386 | take_no_yes(consumes_two<2>::fn<id, id>); // expected-error {{no matching function}} |
| 387 | take_yes_yes(consumes_two<3>::fn<id, id>); |
| 388 | take_yes_no(consumes_two<1>::fn); // expected-error {{no matching function}} |
| 389 | take_no_yes(consumes_two<2>::fn); // expected-error {{no matching function}} |
| 390 | take_yes_yes(consumes_two<3>::fn); |
| 391 | } |
| 392 | } |
| 393 | |
| 394 | namespace produced { |
| 395 | void take_yes(PRODUCED id (&)()); // expected-note 2 {{candidate function not viable}} |
| 396 | void take_no(id (&)()); // expected-note 2 {{candidate function not viable}} |
| 397 | |
| 398 | template <class T> T non_produces1(); |
| 399 | template <class T> T non_produces2(); |
| 400 | template <class T> T non_produces3(); |
| 401 | template <class T> T non_produces4(); |
| 402 | void test1() { |
| 403 | take_yes(non_produces1<id>); // expected-error {{no matching function}} |
| 404 | take_yes(non_produces2); // expected-error {{no matching function}} |
| 405 | take_no(non_produces3<id>); |
| 406 | take_no(non_produces4); |
| 407 | } |
| 408 | |
| 409 | template <class T> PRODUCED T produces1(); |
| 410 | template <class T> PRODUCED T produces2(); |
| 411 | template <class T> PRODUCED T produces3(); |
| 412 | template <class T> PRODUCED T produces4(); |
| 413 | void test2() { |
| 414 | take_yes(produces1<id>); |
| 415 | take_yes(produces2); |
| 416 | take_no(produces3<id>); // expected-error {{no matching function}} |
| 417 | take_no(produces4); // expected-error {{no matching function}} |
| 418 | } |
| 419 | } |
| 420 | |
| 421 | namespace produced_nested { |
| 422 | void take_yes(PRODUCED id (&)()); // expected-note 2 {{candidate function not viable}} |
| 423 | void take_no(id (&)()); // expected-note 2 {{candidate function not viable}} |
| 424 | |
| 425 | template <unsigned N> struct non_produces { |
| 426 | template <class T> static T fn(); |
| 427 | }; |
| 428 | void test1() { |
| 429 | take_yes(non_produces<1>::fn<id>); // expected-error {{no matching function}} |
| 430 | take_yes(non_produces<2>::fn); // expected-error {{no matching function}} |
| 431 | take_no(non_produces<3>::fn<id>); |
| 432 | take_no(non_produces<4>::fn); |
| 433 | } |
| 434 | |
| 435 | template <unsigned N> struct produces { |
| 436 | template <class T> static PRODUCED T fn(); |
| 437 | }; |
| 438 | void test2() { |
| 439 | take_yes(produces<1>::fn<id>); |
| 440 | take_yes(produces<2>::fn); |
| 441 | take_no(produces<3>::fn<id>); // expected-error {{no matching function}} |
| 442 | take_no(produces<4>::fn); // expected-error {{no matching function}} |
| 443 | } |
| 444 | } |
| 445 | |
| 446 | namespace instantiate_consumed { |
| 447 | template <class T> void take(CONSUMED T t) {} // expected-note {{candidate template ignored: substitution failure [with T = int]: ns_consumed attribute only applies to Objective-C object parameters}} |
| 448 | void test() { |
| 449 | take((id) 0); |
| 450 | take((int) 0); // expected-error {{no matching function for call to 'take'}} |
| 451 | } |
| 452 | } |