1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
|
/* Check Class <protocol> types */
/* Author: David Ayers <d.ayers@inode.at> */
/* { dg-do compile } */
#include <objc/objc.h>
#include <objc/objc-api.h>
@protocol MyProto1
+(void)doItClass1;
-(void)doItInstance1;
@end
@protocol MyProto2
+(void)doItClass2;
-(void)doItInstance2;
@end
@interface MyClass1 <MyProto1>
{
Class isa;
}
@end
@implementation MyClass1
+(void)doItClass1{}
-(void)doItInstance1{}
@end
@interface MyClass2 : MyClass1 <MyProto2>
@end
@implementation MyClass2
+(void)doItClass2{}
-(void)doItInstance2{}
@end
@interface MyClass3
{
Class isa;
}
@end
@interface MyClass4 : MyClass3 <MyProto1>
@end
/*----------------------------------------*/
Class cls = 0;
Class <MyProto1> clsP1 = 0;
Class <MyProto2> clsP2 = 0;
void
testSimple(void)
{
[cls doItClass1];
[cls doItInstance1];
[cls doItClass2];
[cls doItInstance2];
[clsP1 doItClass1];
[clsP1 doItInstance1]; /* { dg-warning "instead of" } */
[clsP1 doItClass2]; /* { dg-warning "not found in protocol" } */
[clsP1 doItInstance2]; /* { dg-warning "not found in protocol" } */
[clsP2 doItClass1]; /* { dg-warning "not found in protocol" } */
[clsP2 doItInstance1]; /* { dg-warning "not found in protocol" } */
[clsP2 doItClass2];
[clsP2 doItInstance2]; /* { dg-warning "instead of" } */
[MyClass1 doItClass1];
[MyClass1 doItInstance1];
[MyClass1 doItClass2]; /* { dg-warning "may not respond to" } */
[MyClass1 doItInstance2]; /* { dg-warning "may not respond to" } */
[MyClass2 doItClass1];
[MyClass2 doItInstance1];
[MyClass2 doItClass2];
[MyClass2 doItInstance2]; /* { dg-warning "may not respond to" } */
[MyClass3 doItClass1]; /* { dg-warning "may not respond to" } */
[MyClass3 doItInstance1]; /* { dg-warning "may not respond to" } */
[MyClass4 doItClass1];
[MyClass4 doItInstance1]; /* { dg-warning "may not respond to" } */
}
/*----------------------------------------*/
/* Protocols declared by categories */
@protocol MyProto3
+(void)doItClass3;
-(void)doItInstance3;
@end
@protocol MyProto4
+(void)doItClass4;
-(void)doItInstance4;
@end
@interface MyClass1 (Category1) <MyProto3>
@end
@interface MyClass2 (Category2) <MyProto4>
@end
void
testCategory(void)
{
[cls doItClass3];
[cls doItInstance3];
[cls doItClass4];
[cls doItInstance4];
[MyClass1 doItClass3];
[MyClass1 doItInstance3];
[MyClass1 doItClass4]; /* { dg-warning "may not respond" } */
[MyClass1 doItInstance4]; /* { dg-warning "may not respond" } */
[MyClass2 doItClass3];
[MyClass2 doItInstance3];
[MyClass2 doItClass4];
[MyClass2 doItInstance4]; /* { dg-warning "may not respond" } */
}
/*----------------------------------------*/
/* Inherited protocols declared by categories */
@protocol MyProto5 <MyProto1>
+(void)doItClass5;
-(void)doItInstance5;
@end
@protocol MyProto6 <MyProto2>
+(void)doItClass6;
-(void)doItInstance6;
@end
@interface MyClass1 (Category3) <MyProto5>
@end
@interface MyClass2 (Category4) <MyProto6>
@end
Class <MyProto5> clsP5 = 0;
Class <MyProto6> clsP6 = 0;
void
testCategoryInherited(void)
{
[cls doItClass5];
[cls doItInstance5];
[cls doItClass6];
[cls doItInstance6];
[clsP5 doItClass1];
[clsP5 doItInstance1]; /* { dg-warning "instead of" } */
[clsP5 doItClass2]; /* { dg-warning "not found in protocol" } */
[clsP5 doItInstance2]; /* { dg-warning "not found in protocol" } */
[clsP6 doItClass1]; /* { dg-warning "not found in protocol" } */
[clsP6 doItInstance1]; /* { dg-warning "not found in protocol" } */
[clsP6 doItClass2];
[clsP6 doItInstance2]; /* { dg-warning "instead of" } */
[MyClass1 doItClass5];
[MyClass1 doItInstance5];
[MyClass1 doItClass6]; /* { dg-warning "may not respond" } */
[MyClass1 doItInstance6]; /* { dg-warning "may not respond" } */
[MyClass2 doItClass5];
[MyClass2 doItInstance5];
[MyClass2 doItClass6];
[MyClass2 doItInstance6]; /* { dg-warning "may not respond" } */
}
/*----------------------------------------*/
/* Forward declared root protocols */
@protocol FwProto;
@interface MyClass1 (Forward) <FwProto> /* { dg-warning "definition of protocol .FwProto. not found" } */
@end
Class <FwProto> clsP7 = 0;
void
testForwardeDeclared1(void)
{
[cls doItClass7]; /* { dg-warning "no .\\+doItClass7. method found" } */
[cls doItInstance7]; /* { dg-warning "no .\\+doItInstance7. method found" } */
[clsP7 doItClass7]; /* { dg-warning "not found in protocol" } */
/* { dg-warning "no .\\+doItClass7. method found" "" { target *-*-* } 189 } */
[clsP7 doItInstance7]; /* { dg-warning "not found in protocol" } */
/* { dg-warning "no .\\+doItInstance7. method found" "" { target *-*-* } 191 } */
[MyClass1 doItClass7]; /* { dg-warning "may not respond" } */
[MyClass1 doItInstance7]; /* { dg-warning "may not respond" } */
[MyClass2 doItClass7]; /* { dg-warning "may not respond" } */
[MyClass2 doItInstance7]; /* { dg-warning "may not respond" } */
}
@protocol FwProto
+(void)doItClass7;
-(void)doItInstance7;
@end
void
testForwardeDeclared2(void)
{
[cls doItClass7];
[cls doItInstance7];
[clsP7 doItClass7];
[clsP7 doItInstance7]; /* { dg-warning "instead of" } */
[MyClass1 doItClass7];
[MyClass1 doItInstance7];
[MyClass2 doItClass7];
[MyClass2 doItInstance7];
}
/*----------------------------------------*/
/* Inherited non root protocols */
@protocol MyProto8
+(void)doItClass8;
-(void)doItInstance8;
@end
@protocol MyProto9 <MyProto8>
+(void)doItClass9;
-(void)doItInstance9;
@end
@interface MyClass1 (InheritedNonRoot) <MyProto9>
@end
Class <MyProto8> clsP8 = 0;
Class <MyProto9> clsP9 = 0;
void
testInheritedNonRoot(void)
{
[cls doItClass8];
[cls doItInstance8];
[cls doItClass9];
[cls doItInstance9];
[clsP8 doItClass8];
[clsP8 doItInstance8]; /* { dg-warning "instead of" } */
[clsP8 doItClass9]; /* { dg-warning "not found in protocol" } */
[clsP8 doItInstance9]; /* { dg-warning "not found in protocol" } */
[clsP9 doItClass8];
[clsP9 doItInstance8]; /* { dg-warning "instead of" } */
[clsP9 doItClass9];
[clsP9 doItInstance9]; /* { dg-warning "instead of" } */
[MyClass1 doItClass8];
[MyClass1 doItInstance8];
[MyClass1 doItClass9];
[MyClass1 doItInstance9];
[MyClass2 doItClass8];
[MyClass2 doItInstance8];
[MyClass2 doItClass9];
[MyClass2 doItInstance9];
}
/*----------------------------------------*/
/* Prototype mismatch */
@protocol MyOtherProto1
+(id)doItClass1;
-(id)doItInstance1;
@end
@interface MyOtherClass1 <MyOtherProto1>
@end
Class <MyOtherProto1> oclsP1;
void
testPrototypeMismatch(void)
{
id tmp1 = [oclsP1 doItClass1];
id tmp2 = [oclsP1 doItInstance1]; /* { dg-warning "instead of" } */
[clsP1 doItClass1];
[clsP1 doItInstance1]; /* { dg-warning "instead of" } */
}
id obj = nil;
id <MyProto1> objP1 = nil;
id <MyProto2> objP2 = nil;
id <MyProto5> objP5 = nil;
int num = 0;
void *ptr = 0;
MyClass1 *mc1 = nil;
void
testComptypes(void)
{
{ /* id <protocol>, id <protocol> */
objP1 == objP2; /* { dg-warning "lacks a cast" } */
objP2 == objP1; /* { dg-warning "lacks a cast" } */
objP1 == objP5;
objP5 == objP1;
}
{ /* id <protocol>, SomeClass * */
mc1 == objP1;
objP1 == mc1;
mc1 == objP2; /* { dg-warning "lacks a cast" } */
objP2 == mc1; /* { dg-warning "lacks a cast" } */
}
{ /* id <protocol>, id */
obj == objP1;
objP1 == obj;
}
{ /* id <protocol>, Class */
cls == objP1; /* { dg-warning "lacks a cast" } */
objP1 == cls; /* { dg-warning "lacks a cast" } */
}
{ /* id <protocol>, non-ObjC */
num == objP1; /* { dg-error "between pointer" } */
objP1 == num; /* { dg-error "between pointer" } */
ptr == objP1;
objP1 == ptr;
}
{ /* Class <protocol>, Class <protocol> */
clsP1 == clsP2; /* { dg-warning "lacks a cast" } */
clsP2 == clsP1; /* { dg-warning "lacks a cast" } */
clsP1 == clsP5;
clsP5 == clsP1;
}
{ /* Class <protocol>, SomeClass * */
mc1 == clsP1; /* { dg-warning "lacks a cast" } */
clsP1 == mc1; /* { dg-warning "lacks a cast" } */
}
{ /* Class <protocol>, id */
obj == clsP1;
clsP1 == obj;
}
{ /* Class <protocol>, Class */
cls == clsP1;
clsP1 == cls;
}
{ /* Class <protocol>, non-ObjC */
num == clsP1; /* { dg-error "between pointer" } */
clsP1 == num; /* { dg-error "between pointer" } */
ptr == clsP1;
clsP1 == ptr;
}
{ /* Class <protocol>, id <protocol> */
clsP1 == objP1; /* { dg-warning "lacks a cast" } */
objP1 == clsP1; /* { dg-warning "lacks a cast" } */
}
{ /* id <protocol>, id <protocol> */
objP1 = objP2; /* { dg-warning "does not conform" } */
objP2 = objP1; /* { dg-warning "does not conform" } */
objP1 = objP5;
objP5 = objP1; /* { dg-warning "does not conform" } */
}
{ /* id <protocol>, SomeClass * */
mc1 = objP1;
objP1 = mc1;
mc1 = objP2; /* { dg-warning "does not conform" } */
objP2 = mc1; /* { dg-warning "does not implement" } */
}
{ /* id <protocol>, id */
obj = objP1;
objP1 = obj;
}
{ /* id <protocol>, Class */
cls = objP1; /* { dg-warning "distinct Objective\\-C type" } */
objP1 = cls; /* { dg-warning "distinct Objective\\-C type" } */
}
{ /* id <protocol>, non-ObjC */
num = objP1; /* { dg-error "invalid conversion" } */
objP1 = num; /* { dg-error "invalid conversion" } */
ptr = objP1;
objP1 = ptr; /* { dg-error "invalid conversion" } */
}
{ /* Class <protocol>, Class <protocol> */
clsP1 = clsP2; /* { dg-warning "does not conform" } */
clsP2 = clsP1; /* { dg-warning "does not conform" } */
clsP1 = clsP5;
clsP5 = clsP1; /* { dg-warning "does not conform" } */
}
{ /* Class <protocol>, SomeClass * */
/* These combinations should always elicit a warning. */
mc1 = clsP1; /* { dg-warning "distinct Objective\\-C type" } */
clsP1 = mc1; /* { dg-warning "distinct Objective\\-C type" } */
mc1 = clsP2; /* { dg-warning "distinct Objective\\-C type" } */
clsP2 = mc1; /* { dg-warning "distinct Objective\\-C type" } */
}
{ /* Class <protocol>, id */
obj = clsP1;
clsP1 = obj;
}
{ /* Class <protocol>, Class */
cls = clsP1;
clsP1 = cls;
}
{ /* Class <protocol>, non-ObjC */
num = clsP1; /* { dg-error "invalid conversion" } */
clsP1 = num; /* { dg-error "invalid conversion" } */
ptr = clsP1;
clsP1 = ptr; /* { dg-error "invalid conversion" } */
}
{ /* Class <protocol>, id <protocol> */
clsP1 = objP1; /* { dg-warning "distinct Objective\\-C type" } */
objP1 = clsP1; /* { dg-warning "distinct Objective\\-C type" } */
}
}
int main ()
{
testSimple();
testCategory();
testCategoryInherited();
return(0);
}
/* { dg-warning "Messages without a matching method signature" "" { target *-*-* } 0 } */
/* { dg-warning "will be assumed to return .id. and accept" "" { target *-*-* } 0 } */
/* { dg-warning ".\.\.\.. as arguments" "" { target *-*-* } 0 } */
|
