test/gdb.m

   1 // TEST_CFLAGS -Wno-deprecated-declarations
   2
   3 #include "test.h"
   4 #include "testroot.i"
   5 #include <objc/objc-gdb.h>
   6 #include <objc/runtime.h>
   7
   8 #define SwiftV1MangledName4 "_TtC6Swiftt13SwiftV1Class4"
   9 __attribute__((objc_runtime_name(SwiftV1MangledName4)))
  10 @interface SwiftV1Class4 : TestRoot @end
  11 @implementation SwiftV1Class4 @end
  12
  13 int main()
  14 {
  15     // Class hashes
  16     Class result;
  17
  18     // Class should not be realized yet
  19     // fixme not true during class hash rearrangement
  20     // result = NXMapGet(gdb_objc_realized_classes, "TestRoot");
  21     // testassert(!result);
  22
  23     [TestRoot class];
  24     // Now class should be realized
  25
  26     if (!testdyld3()) {
  27         // In dyld3 mode, the class will be in the launch closure and not in our table.
  28         result = (__bridge Class)(NXMapGet(gdb_objc_realized_classes, "TestRoot"));
  29         testassert(result);
  30         testassert(result == [TestRoot class]);
  31     }
  32
  33     Class dynamic = objc_allocateClassPair([TestRoot class], "Dynamic", 0);
  34     objc_registerClassPair(dynamic);
  35     result = (__bridge Class)(NXMapGet(gdb_objc_realized_classes, "Dynamic"));
  36     testassert(result);
  37     testassert(result == dynamic);
  38
  39     Class *realizedClasses = objc_copyRealizedClassList(NULL);
  40     bool foundTestRoot = false;
  41     bool foundDynamic = false;
  42     for (Class *cursor = realizedClasses; *cursor; cursor++) {
  43         if (*cursor == [TestRoot class])
  44             foundTestRoot = true;
  45         if (*cursor == dynamic)
  46             foundDynamic = true;
  47     }
  48     free(realizedClasses);
  49     testassert(foundTestRoot);
  50     testassert(foundDynamic);
  51
  52     result = (__bridge Class)(NXMapGet(gdb_objc_realized_classes, "DoesNotExist"));
  53     testassert(!result);
  54
  55     // Class structure decoding
  56
  57     uintptr_t *maskp = (uintptr_t *)dlsym(RTLD_DEFAULT, "objc_debug_class_rw_data_mask");
  58     testassert(maskp);
  59
  60     // Raw class names
  61     testassert(strcmp(objc_debug_class_getNameRaw([SwiftV1Class4 class]), SwiftV1MangledName4) == 0);
  62     testassert(strcmp(objc_debug_class_getNameRaw([TestRoot class]), "TestRoot") == 0);
  63
  64
  65     succeed(__FILE__);
  66 }