text: int *ptr; // expected-warning {{missing a nullability type specifier}}
  
  #pragma clang assume_nonnull begin
  
  extern void **blah; // expected-warning 2{{missing a nullability type specifier}}
  
  __attribute__((objc_root_class))
  @interface ClassWithWeakProperties
  @property (readonly, weak) ClassWithWeakProperties *prop1;
  @property (readonly, weak, null_unspecified) ClassWithWeakProperties *prop2;
  @end
  
  @interface ClassWithWeakProperties ()
  @property (readonly, weak) ClassWithWeakProperties *prop3;
  @end
  
  #pragma clang assume_nonnull end
  
  