gcc/testsuite/obj-c++.dg/comp-types-7.mm

   1 /* Test assignments and comparisons involving category protocols.  */
   2 /* Author: Nicola Pero <nicola@brainstorm.co.uk>.  */
   3 /* { dg-do compile } */
   4
   5 #include <objc/objc.h>
   6
   7 @protocol MyProtocol
   8 - (void) method;
   9 @end
  10
  11 @interface MyClass
  12 @end
  13
  14 @interface MyClass (Addition) <MyProtocol>
  15 - (void) method;
  16 @end
  17
  18 @interface MyOtherClass : MyClass
  19 @end
  20
  21 int main()
  22 {
  23   id <MyProtocol> obj_p = nil;
  24   MyClass *obj_cp = nil;
  25   MyOtherClass *obj_cp2 = nil;
  26
  27   obj_cp = obj_p;  /* { dg-warning "distinct Objective\\-C type" } */
  28   obj_cp2 = obj_p; /* { dg-warning "distinct Objective\\-C type" } */
  29   obj_p = obj_cp;  /* Ok */
  30   obj_p = obj_cp2; /* Ok */
  31
  32   if (obj_cp == obj_p) ; /* Ok */
  33   if (obj_cp2 == obj_p) ; /* Ok */
  34   if (obj_p == obj_cp) ; /* Ok */
  35   if (obj_p == obj_cp2) ; /* Ok */
  36
  37   return 0;
  38 }