test/SemaObjC/comptypes-8.m - clang - Git at Google

 // RUN: clang-cc -fsyntax-only -verify %s

 @protocol MyProtocol
 @end

 id<MyProtocol> obj_p = 0;

 int main()
 {
   obj_p = 0;
 }
	// RUN: clang-cc -fsyntax-only -verify %s

	@protocol MyProtocol
	@end

	id<MyProtocol> obj_p = 0;

	int main()
	{
	obj_p = 0;
	}