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)) |
5 | |
6 | @interface A |
7 | @end |
8 | |
9 | @class NSString; |
10 | |
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 { |
25 | typedef T* pointer; // okay: ends up being strong. |
26 | typedef T& reference; // okay: ends up being strong |
27 | }; |
28 | |
29 | void test_X0() { |
30 | X0<id> x0id; |
31 | X0<A*> x0a; |
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 | |
40 | int check_infer_strong[is_same<id, __strong id>::value? 1 : -1]; |
41 | |
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 | |
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 | |
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]; |
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 | |
102 | template<typename T> |
103 | struct make_weak_fail { |
104 | typedef T T_type; |
105 | typedef __weak T_type type; // expected-error{{the type 'make_weak_fail<__weak id>::T_type' (aka '__weak id') is already explicitly ownership-qualified}} \ |
106 | // expected-error{{the type 'make_weak_fail<id>::T_type' (aka '__strong id') is already explicitly ownership-qualified}} |
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}} |
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 | } |
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 | } |
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 | } |
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 | } |
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 | } |
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 | } |
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 | } |
453 | |