gcc/testsuite/objc.dg/lookup-1.m

   1 /* { dg-do run } */
   2 /* { dg-xfail-run-if "Needs OBJC2 ABI" { *-*-darwin* && { lp64 && { ! objc2 } } } { "-fnext-runtime" } { "" } } */
   3
   4 #include <stdlib.h>
   5 #include "../objc-obj-c++-shared/TestsuiteObject.m"
   6
   7 typedef struct MyWidget {
   8   int a;
   9 } MyWidget;
  10
  11 MyWidget gWidget = { 17 };
  12
  13 @protocol MyProto
  14 - (MyWidget *)widget;
  15 @end
  16
  17 @interface Foo: TestsuiteObject
  18 @end
  19
  20 @interface Bar: Foo <MyProto>
  21 @end
  22
  23 @interface Container: TestsuiteObject
  24 + (MyWidget *)elementForView:(Foo *)view;
  25 @end
  26
  27 @implementation Foo
  28 @end
  29
  30 @implementation Bar
  31 - (MyWidget *)widget {
  32   return &gWidget;
  33 }
  34 @end
  35
  36 @implementation Container
  37 + (MyWidget *)elementForView:(Foo *)view
  38 {
  39   MyWidget *widget = (MyWidget *) nil;
  40   if (class_conformsToProtocol (object_getClass (view),
  41                                 @protocol(MyProto))) {
  42     widget = [(Foo <MyProto> *)view widget];
  43   }
  44   return widget;
  45 }
  46 @end
  47
  48 int main(void) {
  49   id view = [Bar new];
  50   MyWidget *w = [Container elementForView: view];
  51
  52   if (!w || w->a != 17)
  53     abort ();
  54
  55   return 0;
  56 }