test/SemaObjC/warn-unused-exception-param.m - clang - Git at Google

 // RUN: %clang_cc1 -fsyntax-only -verify -Wunused-exception-parameter %s
 void  f0() {
   @try {} @catch(id a) {} // expected-warning{{unused exception parameter 'a'}}
 }
	// RUN: %clang_cc1 -fsyntax-only -verify -Wunused-exception-parameter %s
	void f0() {
	@try {} @catch(id a) {} // expected-warning{{unused exception parameter 'a'}}
	}