test/customrr.m

   1 // These options must match customrr2.m
   2 // TEST_CONFIG MEM=mrc
   3 /*
   4 TEST_BUILD
   5     $C{COMPILE} $DIR/customrr.m -fvisibility=default -o customrr.out
   6     $C{COMPILE} -undefined dynamic_lookup -dynamiclib $DIR/customrr-cat1.m -o customrr-cat1.dylib
   7     $C{COMPILE} -undefined dynamic_lookup -dynamiclib $DIR/customrr-cat2.m -o customrr-cat2.dylib
   8 END
   9 */
  10
  11
  12 #include "test.h"
  13 #include <dlfcn.h>
  14 #include <Foundation/NSObject.h>
  15
  16 #if !__OBJC2__
  17
  18 // pacify exported symbols list
  19 OBJC_ROOT_CLASS
  20 @interface InheritingSubCat @end
  21 @implementation InheritingSubCat @end
  22
  23 int main(int argc __unused, char **argv)
  24 {
  25     succeed(basename(argv[0]));
  26 }
  27
  28 #else
  29
  30 static int Retains;
  31 static int Releases;
  32 static int Autoreleases;
  33 static int RetainCounts;
  34 static int PlusRetains;
  35 static int PlusReleases;
  36 static int PlusAutoreleases;
  37 static int PlusRetainCounts;
  38 static int Allocs;
  39 static int AllocWithZones;
  40
  41 static int SubRetains;
  42 static int SubReleases;
  43 static int SubAutoreleases;
  44 static int SubRetainCounts;
  45 static int SubPlusRetains;
  46 static int SubPlusReleases;
  47 static int SubPlusAutoreleases;
  48 static int SubPlusRetainCounts;
  49 static int SubAllocs;
  50 static int SubAllocWithZones;
  51
  52 static int Imps;
  53
  54 static id imp_fn(id self, SEL _cmd __unused, ...)
  55 {
  56     Imps++;
  57     return self;
  58 }
  59
  60 static void zero(void) {
  61     Retains = 0;
  62     Releases = 0;
  63     Autoreleases = 0;
  64     RetainCounts = 0;
  65     PlusRetains = 0;
  66     PlusReleases = 0;
  67     PlusAutoreleases = 0;
  68     PlusRetainCounts = 0;
  69     Allocs = 0;
  70     AllocWithZones = 0;
  71
  72     SubRetains = 0;
  73     SubReleases = 0;
  74     SubAutoreleases = 0;
  75     SubRetainCounts = 0;
  76     SubPlusRetains = 0;
  77     SubPlusReleases = 0;
  78     SubPlusAutoreleases = 0;
  79     SubPlusRetainCounts = 0;
  80     SubAllocs = 0;
  81     SubAllocWithZones = 0;
  82
  83     Imps = 0;
  84 }
  85
  86
  87 id HackRetain(id self, SEL _cmd __unused) { Retains++; return self; }
  88 void HackRelease(id self __unused, SEL _cmd __unused) { Releases++; }
  89 id HackAutorelease(id self, SEL _cmd __unused) { Autoreleases++; return self; }
  90 NSUInteger HackRetainCount(id self __unused, SEL _cmd __unused) { RetainCounts++; return 1; }
  91 id HackPlusRetain(id self, SEL _cmd __unused) { PlusRetains++; return self; }
  92 void HackPlusRelease(id self __unused, SEL _cmd __unused) { PlusReleases++; }
  93 id HackPlusAutorelease(id self, SEL _cmd __unused) { PlusAutoreleases++; return self; }
  94 NSUInteger HackPlusRetainCount(id self __unused, SEL _cmd __unused) { PlusRetainCounts++; return 1; }
  95 id HackAlloc(Class self, SEL _cmd __unused) { Allocs++; return class_createInstance(self, 0); }
  96 id HackAllocWithZone(Class self, SEL _cmd __unused) { AllocWithZones++; return class_createInstance(self, 0); }
  97
  98
  99 @interface OverridingSub : NSObject @end
 100 @implementation OverridingSub
 101
 102 -(id) retain { SubRetains++; return self; }
 103 +(id) retain { SubPlusRetains++; return self; }
 104 -(oneway void) release { SubReleases++; }
 105 +(oneway void) release { SubPlusReleases++; }
 106 -(id) autorelease { SubAutoreleases++; return self; }
 107 +(id) autorelease { SubPlusAutoreleases++; return self; }
 108 -(NSUInteger) retainCount { SubRetainCounts++; return 1; }
 109 +(NSUInteger) retainCount { SubPlusRetainCounts++; return 1; }
 110
 111 @end
 112
 113 @interface OverridingASub : NSObject @end
 114 @implementation OverridingASub
 115 +(id) alloc { SubAllocs++; return class_createInstance(self, 0); }
 116 @end
 117
 118 @interface OverridingAWZSub : NSObject @end
 119 @implementation OverridingAWZSub
 120 +(id) allocWithZone:(NSZone * __unused)z { SubAllocWithZones++; return class_createInstance(self, 0); }
 121 @end
 122
 123 @interface OverridingAAWZSub : NSObject @end
 124 @implementation OverridingAAWZSub
 125 +(id) alloc { SubAllocs++; return class_createInstance(self, 0); }
 126 +(id) allocWithZone:(NSZone * __unused)z { SubAllocWithZones++; return class_createInstance(self, 0); }
 127 @end
 128
 129
 130 @interface InheritingSub : NSObject @end
 131 @implementation InheritingSub @end
 132
 133 @interface InheritingSub2 : NSObject @end
 134 @implementation InheritingSub2 @end
 135 @interface InheritingSub2_2 : InheritingSub2 @end
 136 @implementation InheritingSub2_2 @end
 137
 138 @interface InheritingSub3 : NSObject @end
 139 @implementation InheritingSub3 @end
 140 @interface InheritingSub3_2 : InheritingSub3 @end
 141 @implementation InheritingSub3_2 @end
 142
 143 @interface InheritingSub4 : NSObject @end
 144 @implementation InheritingSub4 @end
 145 @interface InheritingSub4_2 : InheritingSub4 @end
 146 @implementation InheritingSub4_2 @end
 147
 148 @interface InheritingSub5 : NSObject @end
 149 @implementation InheritingSub5 @end
 150 @interface InheritingSub5_2 : InheritingSub5 @end
 151 @implementation InheritingSub5_2 @end
 152
 153 @interface InheritingSub6 : NSObject @end
 154 @implementation InheritingSub6 @end
 155 @interface InheritingSub6_2 : InheritingSub6 @end
 156 @implementation InheritingSub6_2 @end
 157
 158 @interface InheritingSub7 : NSObject @end
 159 @implementation InheritingSub7 @end
 160 @interface InheritingSub7_2 : InheritingSub7 @end
 161 @implementation InheritingSub7_2 @end
 162
 163 @interface InheritingSubCat : NSObject @end
 164 @implementation InheritingSubCat @end
 165 @interface InheritingSubCat_2 : InheritingSubCat @end
 166 @implementation InheritingSubCat_2 @end
 167
 168
 169 extern uintptr_t OBJC_CLASS_$_UnrealizedSubA1;
 170 @interface UnrealizedSubA1 : NSObject @end
 171 @implementation UnrealizedSubA1 @end
 172 extern uintptr_t OBJC_CLASS_$_UnrealizedSubA2;
 173 @interface UnrealizedSubA2 : NSObject @end
 174 @implementation UnrealizedSubA2 @end
 175 extern uintptr_t OBJC_CLASS_$_UnrealizedSubA3;
 176 @interface UnrealizedSubA3 : NSObject @end
 177 @implementation UnrealizedSubA3 @end
 178
 179 extern uintptr_t OBJC_CLASS_$_UnrealizedSubB1;
 180 @interface UnrealizedSubB1 : NSObject @end
 181 @implementation UnrealizedSubB1 @end
 182 extern uintptr_t OBJC_CLASS_$_UnrealizedSubB2;
 183 @interface UnrealizedSubB2 : NSObject @end
 184 @implementation UnrealizedSubB2 @end
 185 extern uintptr_t OBJC_CLASS_$_UnrealizedSubB3;
 186 @interface UnrealizedSubB3 : NSObject @end
 187 @implementation UnrealizedSubB3 @end
 188
 189 extern uintptr_t OBJC_CLASS_$_UnrealizedSubC1;
 190 @interface UnrealizedSubC1 : NSObject @end
 191 @implementation UnrealizedSubC1 @end
 192 extern uintptr_t OBJC_CLASS_$_UnrealizedSubC2;
 193 @interface UnrealizedSubC2 : NSObject @end
 194 @implementation UnrealizedSubC2 @end
 195 extern uintptr_t OBJC_CLASS_$_UnrealizedSubC3;
 196 @interface UnrealizedSubC3 : NSObject @end
 197 @implementation UnrealizedSubC3 @end
 198
 199
 200 int main(int argc __unused, char **argv)
 201 {
 202     objc_autoreleasePoolPush();
 203
 204     // Hack NSObject's RR methods.
 205     // Don't use runtime functions to do this -
 206     // we want the runtime to think that these are NSObject's real code
 207     {
 208         Class cls = [NSObject class];
 209         IMP *m;
 210         IMP imp;
 211         imp = class_getMethodImplementation(cls, @selector(retain));
 212         m = (IMP *)class_getInstanceMethod(cls, @selector(retain));
 213         testassert(m[2] == imp);  // verify Method struct is as we expect
 214
 215         m = (IMP *)class_getInstanceMethod(cls, @selector(retain));
 216         m[2] = (IMP)HackRetain;
 217         m = (IMP *)class_getInstanceMethod(cls, @selector(release));
 218         m[2] = (IMP)HackRelease;
 219         m = (IMP *)class_getInstanceMethod(cls, @selector(autorelease));
 220         m[2] = (IMP)HackAutorelease;
 221         m = (IMP *)class_getInstanceMethod(cls, @selector(retainCount));
 222         m[2] = (IMP)HackRetainCount;
 223         m = (IMP *)class_getClassMethod(cls, @selector(retain));
 224         m[2] = (IMP)HackPlusRetain;
 225         m = (IMP *)class_getClassMethod(cls, @selector(release));
 226         m[2] = (IMP)HackPlusRelease;
 227         m = (IMP *)class_getClassMethod(cls, @selector(autorelease));
 228         m[2] = (IMP)HackPlusAutorelease;
 229         m = (IMP *)class_getClassMethod(cls, @selector(retainCount));
 230         m[2] = (IMP)HackPlusRetainCount;
 231         m = (IMP *)class_getClassMethod(cls, @selector(alloc));
 232         m[2] = (IMP)HackAlloc;
 233         m = (IMP *)class_getClassMethod(cls, @selector(allocWithZone:));
 234         m[2] = (IMP)HackAllocWithZone;
 235
 236         _objc_flush_caches(cls);
 237
 238         imp = class_getMethodImplementation(cls, @selector(retain));
 239         testassert(imp == (IMP)HackRetain);  // verify hack worked
 240     }
 241
 242     Class cls = [NSObject class];
 243     Class icl = [InheritingSub class];
 244     Class ocl = [OverridingSub class];
 245     /*
 246     Class oa1 = [OverridingASub class];
 247     Class oa2 = [OverridingAWZSub class];
 248     Class oa3 = [OverridingAAWZSub class];
 249     */
 250     NSObject *obj = [NSObject new];
 251     InheritingSub *inh = [InheritingSub new];
 252     OverridingSub *ovr = [OverridingSub new];
 253
 254     Class ccc;
 255     id ooo;
 256     Class cc2;
 257     id oo2;
 258
 259     void *dlh;
 260
 261
 262     testprintf("method dispatch does not bypass\n");
 263     zero();
 264
 265     [obj retain];
 266     testassert(Retains == 1);
 267     [obj release];
 268     testassert(Releases == 1);
 269     [obj autorelease];
 270     testassert(Autoreleases == 1);
 271
 272     [cls retain];
 273     testassert(PlusRetains == 1);
 274     [cls release];
 275     testassert(PlusReleases == 1);
 276     [cls autorelease];
 277     testassert(PlusAutoreleases == 1);
 278
 279     [inh retain];
 280     testassert(Retains == 2);
 281     [inh release];
 282     testassert(Releases == 2);
 283     [inh autorelease];
 284     testassert(Autoreleases == 2);
 285
 286     [icl retain];
 287     testassert(PlusRetains == 2);
 288     [icl release];
 289     testassert(PlusReleases == 2);
 290     [icl autorelease];
 291     testassert(PlusAutoreleases == 2);
 292
 293     [ovr retain];
 294     testassert(SubRetains == 1);
 295     [ovr release];
 296     testassert(SubReleases == 1);
 297     [ovr autorelease];
 298     testassert(SubAutoreleases == 1);
 299
 300     [ocl retain];
 301     testassert(SubPlusRetains == 1);
 302     [ocl release];
 303     testassert(SubPlusReleases == 1);
 304     [ocl autorelease];
 305     testassert(SubPlusAutoreleases == 1);
 306
 307     [UnrealizedSubA1 retain];
 308     testassert(PlusRetains == 3);
 309     [UnrealizedSubA2 release];
 310     testassert(PlusReleases == 3);
 311     [UnrealizedSubA3 autorelease];
 312     testassert(PlusAutoreleases == 3);
 313
 314
 315     testprintf("objc_msgSend() does not bypass\n");
 316     zero();
 317
 318     id (*retain_fn)(id, SEL) = (id(*)(id, SEL))objc_msgSend;
 319     void (*release_fn)(id, SEL) = (void(*)(id, SEL))objc_msgSend;
 320     id (*autorelease_fn)(id, SEL) = (id(*)(id, SEL))objc_msgSend;
 321
 322     retain_fn(obj, @selector(retain));
 323     testassert(Retains == 1);
 324     release_fn(obj, @selector(release));
 325     testassert(Releases == 1);
 326     autorelease_fn(obj, @selector(autorelease));
 327     testassert(Autoreleases == 1);
 328
 329     retain_fn(cls, @selector(retain));
 330     testassert(PlusRetains == 1);
 331     release_fn(cls, @selector(release));
 332     testassert(PlusReleases == 1);
 333     autorelease_fn(cls, @selector(autorelease));
 334     testassert(PlusAutoreleases == 1);
 335
 336     retain_fn(inh, @selector(retain));
 337     testassert(Retains == 2);
 338     release_fn(inh, @selector(release));
 339     testassert(Releases == 2);
 340     autorelease_fn(inh, @selector(autorelease));
 341     testassert(Autoreleases == 2);
 342
 343     retain_fn(icl, @selector(retain));
 344     testassert(PlusRetains == 2);
 345     release_fn(icl, @selector(release));
 346     testassert(PlusReleases == 2);
 347     autorelease_fn(icl, @selector(autorelease));
 348     testassert(PlusAutoreleases == 2);
 349
 350     retain_fn(ovr, @selector(retain));
 351     testassert(SubRetains == 1);
 352     release_fn(ovr, @selector(release));
 353     testassert(SubReleases == 1);
 354     autorelease_fn(ovr, @selector(autorelease));
 355     testassert(SubAutoreleases == 1);
 356
 357     retain_fn(ocl, @selector(retain));
 358     testassert(SubPlusRetains == 1);
 359     release_fn(ocl, @selector(release));
 360     testassert(SubPlusReleases == 1);
 361     autorelease_fn(ocl, @selector(autorelease));
 362     testassert(SubPlusAutoreleases == 1);
 363
 364 #if __OBJC2__
 365     retain_fn((Class)&OBJC_CLASS_$_UnrealizedSubB1, @selector(retain));
 366     testassert(PlusRetains == 3);
 367     release_fn((Class)&OBJC_CLASS_$_UnrealizedSubB2, @selector(release));
 368     testassert(PlusReleases == 3);
 369     autorelease_fn((Class)&OBJC_CLASS_$_UnrealizedSubB3, @selector(autorelease));
 370     testassert(PlusAutoreleases == 3);
 371 #endif
 372
 373
 374     testprintf("arc function bypasses instance but not class or override\n");
 375     zero();
 376
 377     objc_retain(obj);
 378     testassert(Retains == 0);
 379     objc_release(obj);
 380     testassert(Releases == 0);
 381     objc_autorelease(obj);
 382     testassert(Autoreleases == 0);
 383
 384     objc_retain(cls);
 385     testassert(PlusRetains == 1);
 386     objc_release(cls);
 387     testassert(PlusReleases == 1);
 388     objc_autorelease(cls);
 389     testassert(PlusAutoreleases == 1);
 390
 391     objc_retain(inh);
 392     testassert(Retains == 0);
 393     objc_release(inh);
 394     testassert(Releases == 0);
 395     objc_autorelease(inh);
 396     testassert(Autoreleases == 0);
 397
 398     objc_retain(icl);
 399     testassert(PlusRetains == 2);
 400     objc_release(icl);
 401     testassert(PlusReleases == 2);
 402     objc_autorelease(icl);
 403     testassert(PlusAutoreleases == 2);
 404
 405     objc_retain(ovr);
 406     testassert(SubRetains == 1);
 407     objc_release(ovr);
 408     testassert(SubReleases == 1);
 409     objc_autorelease(ovr);
 410     testassert(SubAutoreleases == 1);
 411
 412     objc_retain(ocl);
 413     testassert(SubPlusRetains == 1);
 414     objc_release(ocl);
 415     testassert(SubPlusReleases == 1);
 416     objc_autorelease(ocl);
 417     testassert(SubPlusAutoreleases == 1);
 418
 419 #if __OBJC2__
 420 #if 1
 421     testwarn("rdar://12961688 CustomRR is wrong for unrealized classes");
 422 #else
 423     objc_retain((Class)&OBJC_CLASS_$_UnrealizedSubC1);
 424     testassert(PlusRetains == 3);
 425     objc_release((Class)&OBJC_CLASS_$_UnrealizedSubC2);
 426     testassert(PlusReleases == 3);
 427     objc_autorelease((Class)&OBJC_CLASS_$_UnrealizedSubC3);
 428     testassert(PlusAutoreleases == 3);
 429 #endif
 430 #endif
 431
 432
 433     testprintf("unrelated addMethod does not clobber\n");
 434     zero();
 435
 436     class_addMethod(cls, @selector(unrelatedMethod), (IMP)imp_fn, "");
 437
 438     objc_retain(obj);
 439     testassert(Retains == 0);
 440     objc_release(obj);
 441     testassert(Releases == 0);
 442     objc_autorelease(obj);
 443     testassert(Autoreleases == 0);
 444
 445
 446     testprintf("add class method does not clobber\n");
 447     zero();
 448
 449     objc_retain(obj);
 450     testassert(Retains == 0);
 451     objc_release(obj);
 452     testassert(Releases == 0);
 453     objc_autorelease(obj);
 454     testassert(Autoreleases == 0);
 455
 456     class_addMethod(cls->isa, @selector(retain), (IMP)imp_fn, "");
 457
 458     objc_retain(obj);
 459     testassert(Retains == 0);
 460     objc_release(obj);
 461     testassert(Releases == 0);
 462     objc_autorelease(obj);
 463     testassert(Autoreleases == 0);
 464
 465
 466     testprintf("addMethod clobbers (InheritingSub2, retain)\n");
 467     zero();
 468
 469     ccc = [InheritingSub2 class];
 470     ooo = [ccc new];
 471     cc2 = [InheritingSub2_2 class];
 472     oo2 = [cc2 new];
 473
 474     objc_retain(ooo);
 475     testassert(Retains == 0);
 476     objc_release(ooo);
 477     testassert(Releases == 0);
 478     objc_autorelease(ooo);
 479     testassert(Autoreleases == 0);
 480
 481     objc_retain(oo2);
 482     testassert(Retains == 0);
 483     objc_release(oo2);
 484     testassert(Releases == 0);
 485     objc_autorelease(oo2);
 486     testassert(Autoreleases == 0);
 487
 488     class_addMethod(ccc, @selector(retain), (IMP)imp_fn, "");
 489
 490     objc_retain(ooo);
 491     testassert(Retains == 0);
 492     testassert(Imps == 1);
 493     objc_release(ooo);
 494     testassert(Releases == 1);
 495     objc_autorelease(ooo);
 496     testassert(Autoreleases == 1);
 497
 498     objc_retain(oo2);
 499     testassert(Retains == 0);
 500     testassert(Imps == 2);
 501     objc_release(oo2);
 502     testassert(Releases == 2);
 503     objc_autorelease(oo2);
 504     testassert(Autoreleases == 2);
 505
 506
 507     testprintf("addMethod clobbers (InheritingSub3, release)\n");
 508     zero();
 509
 510     ccc = [InheritingSub3 class];
 511     ooo = [ccc new];
 512     cc2 = [InheritingSub3_2 class];
 513     oo2 = [cc2 new];
 514
 515     objc_retain(ooo);
 516     testassert(Retains == 0);
 517     objc_release(ooo);
 518     testassert(Releases == 0);
 519     objc_autorelease(ooo);
 520     testassert(Autoreleases == 0);
 521
 522     objc_retain(oo2);
 523     testassert(Retains == 0);
 524     objc_release(oo2);
 525     testassert(Releases == 0);
 526     objc_autorelease(oo2);
 527     testassert(Autoreleases == 0);
 528
 529     class_addMethod(ccc, @selector(release), (IMP)imp_fn, "");
 530
 531     objc_retain(ooo);
 532     testassert(Retains == 1);
 533     objc_release(ooo);
 534     testassert(Releases == 0);
 535     testassert(Imps == 1);
 536     objc_autorelease(ooo);
 537     testassert(Autoreleases == 1);
 538
 539     objc_retain(oo2);
 540     testassert(Retains == 2);
 541     objc_release(oo2);
 542     testassert(Releases == 0);
 543     testassert(Imps == 2);
 544     objc_autorelease(oo2);
 545     testassert(Autoreleases == 2);
 546
 547
 548     testprintf("addMethod clobbers (InheritingSub4, autorelease)\n");
 549     zero();
 550
 551     ccc = [InheritingSub4 class];
 552     ooo = [ccc new];
 553     cc2 = [InheritingSub4_2 class];
 554     oo2 = [cc2 new];
 555
 556     objc_retain(ooo);
 557     testassert(Retains == 0);
 558     objc_release(ooo);
 559     testassert(Releases == 0);
 560     objc_autorelease(ooo);
 561     testassert(Autoreleases == 0);
 562
 563     objc_retain(oo2);
 564     testassert(Retains == 0);
 565     objc_release(oo2);
 566     testassert(Releases == 0);
 567     objc_autorelease(oo2);
 568     testassert(Autoreleases == 0);
 569
 570     class_addMethod(ccc, @selector(autorelease), (IMP)imp_fn, "");
 571
 572     objc_retain(ooo);
 573     testassert(Retains == 1);
 574     objc_release(ooo);
 575     testassert(Releases == 1);
 576     objc_autorelease(ooo);
 577     testassert(Autoreleases == 0);
 578     testassert(Imps == 1);
 579
 580     objc_retain(oo2);
 581     testassert(Retains == 2);
 582     objc_release(oo2);
 583     testassert(Releases == 2);
 584     objc_autorelease(oo2);
 585     testassert(Autoreleases == 0);
 586     testassert(Imps == 2);
 587
 588
 589     testprintf("addMethod clobbers (InheritingSub5, retainCount)\n");
 590     zero();
 591
 592     ccc = [InheritingSub5 class];
 593     ooo = [ccc new];
 594     cc2 = [InheritingSub5_2 class];
 595     oo2 = [cc2 new];
 596
 597     objc_retain(ooo);
 598     testassert(Retains == 0);
 599     objc_release(ooo);
 600     testassert(Releases == 0);
 601     objc_autorelease(ooo);
 602     testassert(Autoreleases == 0);
 603
 604     objc_retain(oo2);
 605     testassert(Retains == 0);
 606     objc_release(oo2);
 607     testassert(Releases == 0);
 608     objc_autorelease(oo2);
 609     testassert(Autoreleases == 0);
 610
 611     class_addMethod(ccc, @selector(retainCount), (IMP)imp_fn, "");
 612
 613     objc_retain(ooo);
 614     testassert(Retains == 1);
 615     objc_release(ooo);
 616     testassert(Releases == 1);
 617     objc_autorelease(ooo);
 618     testassert(Autoreleases == 1);
 619     // no bypassing call for -retainCount
 620
 621     objc_retain(oo2);
 622     testassert(Retains == 2);
 623     objc_release(oo2);
 624     testassert(Releases == 2);
 625     objc_autorelease(oo2);
 626     testassert(Autoreleases == 2);
 627     // no bypassing call for -retainCount
 628
 629
 630     testprintf("setSuperclass to clean super does not clobber (InheritingSub6)\n");
 631     zero();
 632
 633     ccc = [InheritingSub6 class];
 634     ooo = [ccc new];
 635     cc2 = [InheritingSub6_2 class];
 636     oo2 = [cc2 new];
 637
 638     objc_retain(ooo);
 639     testassert(Retains == 0);
 640     objc_release(ooo);
 641     testassert(Releases == 0);
 642     objc_autorelease(ooo);
 643     testassert(Autoreleases == 0);
 644
 645     objc_retain(oo2);
 646     testassert(Retains == 0);
 647     objc_release(oo2);
 648     testassert(Releases == 0);
 649     objc_autorelease(oo2);
 650     testassert(Autoreleases == 0);
 651
 652     class_setSuperclass(ccc, [InheritingSub class]);
 653
 654     objc_retain(ooo);
 655     testassert(Retains == 0);
 656     objc_release(ooo);
 657     testassert(Releases == 0);
 658     objc_autorelease(ooo);
 659     testassert(Autoreleases == 0);
 660
 661     objc_retain(oo2);
 662     testassert(Retains == 0);
 663     objc_release(oo2);
 664     testassert(Releases == 0);
 665     objc_autorelease(oo2);
 666     testassert(Autoreleases == 0);
 667
 668
 669     testprintf("setSuperclass to dirty super clobbers (InheritingSub7)\n");
 670     zero();
 671
 672     ccc = [InheritingSub7 class];
 673     ooo = [ccc new];
 674     cc2 = [InheritingSub7_2 class];
 675     oo2 = [cc2 new];
 676
 677     objc_retain(ooo);
 678     testassert(Retains == 0);
 679     objc_release(ooo);
 680     testassert(Releases == 0);
 681     objc_autorelease(ooo);
 682     testassert(Autoreleases == 0);
 683
 684     objc_retain(oo2);
 685     testassert(Retains == 0);
 686     objc_release(oo2);
 687     testassert(Releases == 0);
 688     objc_autorelease(oo2);
 689     testassert(Autoreleases == 0);
 690
 691     class_setSuperclass(ccc, [OverridingSub class]);
 692
 693     objc_retain(ooo);
 694     testassert(SubRetains == 1);
 695     objc_release(ooo);
 696     testassert(SubReleases == 1);
 697     objc_autorelease(ooo);
 698     testassert(SubAutoreleases == 1);
 699
 700     objc_retain(oo2);
 701     testassert(SubRetains == 2);
 702     objc_release(oo2);
 703     testassert(SubReleases == 2);
 704     objc_autorelease(oo2);
 705     testassert(SubAutoreleases == 2);
 706
 707
 708     testprintf("category replacement of unrelated method does not clobber (InheritingSubCat)\n");
 709     zero();
 710
 711     ccc = [InheritingSubCat class];
 712     ooo = [ccc new];
 713     cc2 = [InheritingSubCat_2 class];
 714     oo2 = [cc2 new];
 715
 716     objc_retain(ooo);
 717     testassert(Retains == 0);
 718     objc_release(ooo);
 719     testassert(Releases == 0);
 720     objc_autorelease(ooo);
 721     testassert(Autoreleases == 0);
 722
 723     objc_retain(oo2);
 724     testassert(Retains == 0);
 725     objc_release(oo2);
 726     testassert(Releases == 0);
 727     objc_autorelease(oo2);
 728     testassert(Autoreleases == 0);
 729
 730     dlh = dlopen("customrr-cat1.dylib", RTLD_LAZY);
 731     testassert(dlh);
 732
 733     objc_retain(ooo);
 734     testassert(Retains == 0);
 735     objc_release(ooo);
 736     testassert(Releases == 0);
 737     objc_autorelease(ooo);
 738     testassert(Autoreleases == 0);
 739
 740     objc_retain(oo2);
 741     testassert(Retains == 0);
 742     objc_release(oo2);
 743     testassert(Releases == 0);
 744     objc_autorelease(oo2);
 745     testassert(Autoreleases == 0);
 746
 747
 748     testprintf("category replacement clobbers (InheritingSubCat)\n");
 749     zero();
 750
 751     ccc = [InheritingSubCat class];
 752     ooo = [ccc new];
 753     cc2 = [InheritingSubCat_2 class];
 754     oo2 = [cc2 new];
 755
 756     objc_retain(ooo);
 757     testassert(Retains == 0);
 758     objc_release(ooo);
 759     testassert(Releases == 0);
 760     objc_autorelease(ooo);
 761     testassert(Autoreleases == 0);
 762
 763     objc_retain(oo2);
 764     testassert(Retains == 0);
 765     objc_release(oo2);
 766     testassert(Releases == 0);
 767     objc_autorelease(oo2);
 768     testassert(Autoreleases == 0);
 769
 770     dlh = dlopen("customrr-cat2.dylib", RTLD_LAZY);
 771     testassert(dlh);
 772
 773     objc_retain(ooo);
 774     testassert(Retains == 1);
 775     objc_release(ooo);
 776     testassert(Releases == 1);
 777     objc_autorelease(ooo);
 778     testassert(Autoreleases == 1);
 779
 780     objc_retain(oo2);
 781     testassert(Retains == 2);
 782     objc_release(oo2);
 783     testassert(Releases == 2);
 784     objc_autorelease(oo2);
 785     testassert(Autoreleases == 2);
 786
 787
 788     testprintf("allocateClassPair with clean super does not clobber\n");
 789     zero();
 790
 791     objc_retain(inh);
 792     testassert(Retains == 0);
 793     objc_release(inh);
 794     testassert(Releases == 0);
 795     objc_autorelease(inh);
 796     testassert(Autoreleases == 0);
 797
 798     ccc = objc_allocateClassPair([InheritingSub class], "CleanClassPair", 0);
 799     objc_registerClassPair(ccc);
 800     ooo = [ccc new];
 801
 802     objc_retain(inh);
 803     testassert(Retains == 0);
 804     objc_release(inh);
 805     testassert(Releases == 0);
 806     objc_autorelease(inh);
 807     testassert(Autoreleases == 0);
 808
 809     objc_retain(ooo);
 810     testassert(Retains == 0);
 811     objc_release(ooo);
 812     testassert(Releases == 0);
 813     objc_autorelease(ooo);
 814     testassert(Autoreleases == 0);
 815
 816
 817     testprintf("allocateClassPair with clobbered super clobbers\n");
 818     zero();
 819
 820     ccc = objc_allocateClassPair([OverridingSub class], "DirtyClassPair", 0);
 821     objc_registerClassPair(ccc);
 822     ooo = [ccc new];
 823
 824     objc_retain(ooo);
 825     testassert(SubRetains == 1);
 826     objc_release(ooo);
 827     testassert(SubReleases == 1);
 828     objc_autorelease(ooo);
 829     testassert(SubAutoreleases == 1);
 830
 831
 832     testprintf("allocateClassPair with clean super and override clobbers\n");
 833     zero();
 834
 835     ccc = objc_allocateClassPair([InheritingSub class], "Dirty2ClassPair", 0);
 836     class_addMethod(ccc, @selector(autorelease), (IMP)imp_fn, "");
 837     objc_registerClassPair(ccc);
 838     ooo = [ccc new];
 839
 840     objc_retain(ooo);
 841     testassert(Retains == 1);
 842     objc_release(ooo);
 843     testassert(Releases == 1);
 844     objc_autorelease(ooo);
 845     testassert(Autoreleases == 0);
 846     testassert(Imps == 1);
 847
 848
 849     // method_setImplementation and method_exchangeImplementations only
 850     // clobber when manipulating NSObject. We can only test one at a time.
 851     // To test both, we need two tests: customrr and customrr2.
 852
 853     // These tests also check recursive clobber.
 854
 855 #if TEST_EXCHANGEIMPLEMENTATIONS
 856     testprintf("exchangeImplementations clobbers (recursive)\n");
 857 #else
 858     testprintf("setImplementation clobbers (recursive)\n");
 859 #endif
 860     zero();
 861
 862     objc_retain(obj);
 863     testassert(Retains == 0);
 864     objc_release(obj);
 865     testassert(Releases == 0);
 866     objc_autorelease(obj);
 867     testassert(Autoreleases == 0);
 868
 869     objc_retain(inh);
 870     testassert(Retains == 0);
 871     objc_release(inh);
 872     testassert(Releases == 0);
 873     objc_autorelease(inh);
 874     testassert(Autoreleases == 0);
 875
 876     Method meth = class_getInstanceMethod(cls, @selector(retainCount));
 877     testassert(meth);
 878 #if TEST_EXCHANGEIMPLEMENTATIONS
 879     method_exchangeImplementations(meth, meth);
 880 #else
 881     method_setImplementation(meth, (IMP)imp_fn);
 882 #endif
 883
 884     objc_retain(obj);
 885     testassert(Retains == 1);
 886     objc_release(obj);
 887     testassert(Releases == 1);
 888     objc_autorelease(obj);
 889     testassert(Autoreleases == 1);
 890
 891     objc_retain(inh);
 892     testassert(Retains == 2);
 893     objc_release(inh);
 894     testassert(Releases == 2);
 895     objc_autorelease(inh);
 896     testassert(Autoreleases == 2);
 897
 898
 899     // do not add more tests here - the recursive test must be LAST
 900
 901     succeed(basename(argv[0]));
 902 }
 903
 904 #endif