|  | // RUN: %clang_cc1  -fsyntax-only -Wunused-parameter -verify -Wno-objc-root-class %s | 
|  |  | 
|  | @interface INTF | 
|  | - (void) correct_use_of_unused: (void *) notice : (id)another_arg; | 
|  | - (void) will_warn_unused_arg: (void *) notice : (id)warn_unused; | 
|  | - (void) unused_attr_on_decl_ignored: (void *)  __attribute__((unused)) will_warn; | 
|  | @end | 
|  |  | 
|  | @implementation INTF | 
|  | - (void) correct_use_of_unused: (void *)  __attribute__((unused)) notice : (id) __attribute__((unused)) newarg{ | 
|  | } | 
|  | - (void) will_warn_unused_arg: (void *) __attribute__((unused))  notice : (id)warn_unused {}  // expected-warning {{unused parameter 'warn_unused'}} | 
|  | - (void) unused_attr_on_decl_ignored: (void *)  will_warn{}  // expected-warning {{unused parameter 'will_warn'}} | 
|  | @end | 
|  |  |