test/badTagClass.m

   1 /*
   2 TEST_CRASHES
   3 TEST_BUILD_OUTPUT
   4 .*badTagClass.m:\d+:\d+: warning: null passed to a callee that requires a non-null argument \[-Wnonnull\]
   5 END
   6 TEST_RUN_OUTPUT
   7 objc\[\d+\]: tag index 1 used for two different classes \(was 0x[0-9a-fA-F]+ NSObject, now 0x[0-9a-fA-F]+ TestRoot\)
   8 objc\[\d+\]: HALTED
   9 OR
  10 no tagged pointers
  11 OK: badTagClass.m
  12 END
  13 */
  14
  15 #include "test.h"
  16 #include "testroot.i"
  17
  18 #include <objc/objc-internal.h>
  19 #include <objc/Protocol.h>
  20
  21 #if OBJC_HAVE_TAGGED_POINTERS
  22
  23 int main()
  24 {
  25     // re-registration and nil registration allowed
  26     _objc_registerTaggedPointerClass(OBJC_TAG_1, [NSObject class]);
  27     _objc_registerTaggedPointerClass(OBJC_TAG_1, [NSObject class]);
  28     _objc_registerTaggedPointerClass(OBJC_TAG_1, nil);
  29     _objc_registerTaggedPointerClass(OBJC_TAG_1, [NSObject class]);
  30
  31     // colliding registration disallowed
  32     _objc_registerTaggedPointerClass(OBJC_TAG_1, [TestRoot class]);
  33
  34     fail(__FILE__);
  35 }
  36
  37 #else
  38
  39 int main()
  40 {
  41     // provoke the same nullability warning as the real test
  42     objc_getClass(nil);
  43
  44     fprintf(stderr, "no tagged pointers\n");
  45     succeed(__FILE__);
  46 }
  47
  48 #endif