test/ivar.m

   1 /*
   2 TEST_BUILD_OUTPUT
   3 .*ivar.m:\d+:\d+: warning: null passed to a callee that requires a non-null argument \[-Wnonnull\](\n.* note: expanded from macro 'testassert')?
   4 .*ivar.m:\d+:\d+: warning: null passed to a callee that requires a non-null argument \[-Wnonnull\](\n.* note: expanded from macro 'testassert')?
   5 .*ivar.m:\d+:\d+: warning: null passed to a callee that requires a non-null argument \[-Wnonnull\](\n.* note: expanded from macro 'testassert')?
   6 .*ivar.m:\d+:\d+: warning: null passed to a callee that requires a non-null argument \[-Wnonnull\](\n.* note: expanded from macro 'testassert')?
   7 .*ivar.m:\d+:\d+: warning: null passed to a callee that requires a non-null argument \[-Wnonnull\]
   8 .*ivar.m:\d+:\d+: warning: null passed to a callee that requires a non-null argument \[-Wnonnull\]
   9 .*ivar.m:\d+:\d+: warning: null passed to a callee that requires a non-null argument \[-Wnonnull\](\n.* note: expanded from macro 'testassert')?
  10 .*ivar.m:\d+:\d+: warning: null passed to a callee that requires a non-null argument \[-Wnonnull\](\n.* note: expanded from macro 'testassert')?
  11 .*ivar.m:\d+:\d+: warning: null passed to a callee that requires a non-null argument \[-Wnonnull\](\n.* note: expanded from macro 'testassert')?
  12 .*ivar.m:\d+:\d+: warning: null passed to a callee that requires a non-null argument \[-Wnonnull\](\n.* note: expanded from macro 'testassert')?
  13 .*ivar.m:\d+:\d+: warning: null passed to a callee that requires a non-null argument \[-Wnonnull\](\n.* note: expanded from macro 'testassert')?
  14 .*ivar.m:\d+:\d+: warning: null passed to a callee that requires a non-null argument \[-Wnonnull\](\n.* note: expanded from macro 'testassert')?
  15 END
  16 */
  17
  18 #include "test.h"
  19 #include "testroot.i"
  20 #include <stdint.h>
  21 #include <string.h>
  22 #include <objc/objc-runtime.h>
  23
  24 @interface Super : TestRoot {
  25   @public
  26     char superIvar;
  27 }
  28 @end
  29
  30 @interface Sub : Super {
  31   @public
  32     id subIvar;
  33 }
  34 @end
  35
  36 @implementation Super @end
  37 @implementation Sub @end
  38
  39
  40 int main()
  41 {
  42     /*
  43        Runtime layout of Sub:
  44          [0] isa
  45          [1] superIvar
  46          [2] subIvar
  47     */
  48
  49     Ivar ivar;
  50     Sub *sub = [Sub new];
  51     sub->subIvar = [Sub class];
  52     testassert(((Class *)(__bridge void *)sub)[2] == [Sub class]);
  53
  54     ivar = class_getInstanceVariable([Sub class], "subIvar");
  55     testassert(ivar);
  56     testassert(2*sizeof(intptr_t) == (size_t)ivar_getOffset(ivar));
  57     testassert(0 == strcmp(ivar_getName(ivar), "subIvar"));
  58     testassert(0 == strcmp(ivar_getTypeEncoding(ivar), "@"));
  59
  60     ivar = class_getInstanceVariable([Super class], "superIvar");
  61     testassert(ivar);
  62     testassert(sizeof(intptr_t) == (size_t)ivar_getOffset(ivar));
  63     testassert(0 == strcmp(ivar_getName(ivar), "superIvar"));
  64     testassert(0 == strcmp(ivar_getTypeEncoding(ivar), "c"));
  65     testassert(ivar == class_getInstanceVariable([Sub class], "superIvar"));
  66
  67     ivar = class_getInstanceVariable([Super class], "subIvar");
  68     testassert(!ivar);
  69
  70     ivar = class_getInstanceVariable(object_getClass([Sub class]), "subIvar");
  71     testassert(!ivar);
  72
  73     ivar = class_getInstanceVariable([Sub class], "subIvar");
  74     object_setIvar(sub, ivar, sub);
  75     testassert(sub->subIvar == sub);
  76     testassert(sub == object_getIvar(sub, ivar));
  77
  78     testassert(NULL == class_getInstanceVariable(NULL, "foo"));
  79     testassert(NULL == class_getInstanceVariable([Sub class], NULL));
  80     testassert(NULL == class_getInstanceVariable(NULL, NULL));
  81
  82     testassert(NULL == object_getIvar(sub, NULL));
  83     testassert(NULL == object_getIvar(NULL, ivar));
  84     testassert(NULL == object_getIvar(NULL, NULL));
  85
  86     object_setIvar(sub, NULL, NULL);
  87     object_setIvar(NULL, ivar, NULL);
  88     object_setIvar(NULL, NULL, NULL);
  89
  90 #if !__has_feature(objc_arc)
  91
  92     uintptr_t value;
  93
  94     sub->subIvar = (id)10;
  95     value = 0;
  96     object_getInstanceVariable(sub, "subIvar", (void **)&value);
  97     testassert(value == 10);
  98
  99     object_setInstanceVariable(sub, "subIvar", (id)11);
 100     testassert(sub->subIvar == (id)11);
 101
 102     ivar = class_getInstanceVariable([Sub class], "subIvar");
 103     testassert(ivar == object_getInstanceVariable(sub, "subIvar", NULL));
 104
 105     testassert(NULL == object_getInstanceVariable(sub, NULL, NULL));
 106     testassert(NULL == object_getInstanceVariable(NULL, "foo", NULL));
 107     testassert(NULL == object_getInstanceVariable(NULL, NULL, NULL));
 108     value = 10;
 109     testassert(NULL == object_getInstanceVariable(sub, NULL, (void **)&value));
 110     testassert(value == 0);
 111     value = 10;
 112     testassert(NULL == object_getInstanceVariable(NULL, "foo", (void **)&value));
 113     testassert(value == 0);
 114     value = 10;
 115     testassert(NULL == object_getInstanceVariable(NULL, NULL, (void **)&value));
 116     testassert(value == 0);
 117
 118     testassert(NULL == object_setInstanceVariable(sub, NULL, NULL));
 119     testassert(NULL == object_setInstanceVariable(NULL, "foo", NULL));
 120     testassert(NULL == object_setInstanceVariable(NULL, NULL, NULL));
 121 #else
 122     // provoke the same nullability warnings as the real test
 123     objc_getClass(nil);
 124     objc_getClass(nil);
 125     objc_getClass(nil);
 126     objc_getClass(nil);
 127     objc_getClass(nil);
 128     objc_getClass(nil);
 129 #endif
 130
 131     succeed(__FILE__);
 132     return 0;
 133 }