test/MRCBase.m

   1 //
   2 //  MRCBase.m
   3 //  TestARCLayouts
   4 //
   5 //  Created by Patrick Beard on 3/8/11.
   6 //  Copyright 2011 __MyCompanyName__. All rights reserved.
   7 //
   8
   9 #include "MRCBase.h"
  10 #include "test.h"
  11
  12 // MRCBase->alignment ensures that there is a gap between the end of
  13 // NSObject's ivars and the start of MRCBase's ivars, which exercises
  14 // handling of storage that is not represented in any class's ivar
  15 // layout bitmaps.
  16
  17 #if __has_feature(objc_arc_weak)
  18 bool supportsMRCWeak = true;
  19 #else
  20 bool supportsMRCWeak = false;
  21 #endif
  22
  23 @interface MRCBase () {
  24 @private
  25     double DOUBLEWORD_ALIGNED alignment;
  26     uintptr_t pad[3]; // historically this made OBJC2 layout bitmaps match OBJC1
  27     double number;
  28     id object;
  29     void *pointer;
  30 #if __has_feature(objc_arc_weak)
  31     __weak
  32 #endif
  33     id delegate;
  34 }
  35 @end
  36
  37 @implementation MRCBase
  38 @synthesize number, object, pointer, delegate;
  39 @end
  40
  41 // Call object_copy from MRC.
  42 extern id __attribute__((ns_returns_retained))
  43 docopy(id obj)
  44 {
  45     return object_copy(obj, 0);
  46 }