16 @interface Foo : NSObject {  interface
17   Foo *x, *w, *q1, *q2;
23   Foo *assign_plus1;
25 @property (readonly) Foo *x;
26 @property (assign) Foo *w;
27 @property Foo *q1, *q2;
33 @property (readonly) Foo *assign_plus1;
34 @property (readonly) Foo *assign_plus2;
35 @property (readonly) Foo *assign_plus3;
37 @property (assign) Foo *no_user_ivar1;
38 @property (readonly) Foo *no_user_ivar2;
46 @implementation Foo  implementation
52 -(void)test:(Foo *)parm {  argument
53   assign_plus1 = [[Foo alloc] init];
54   assign_plus2 = [Foo new];