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+/* APPLE LOCAL file Objective-C */
+/* The following should NOT generate "may not respond to" warnings, since a forward-declared
+ @class (instance) should be treated like a 'Class') ('id'). */
+/* { dg-do compile } */
+
+#include <objc/Object.h>
+
+@class NotKnown;
+
+void foo(NotKnown *n) {
+ [NotKnown new];
+ [n nonexistent_method]; /* { dg-warning "no .\\-nonexistent_method. method found" } */
+}
+
+/* { dg-warning "Messages without a matching method signature" "" { target *-*-* } 0 } */
+/* { dg-warning "will be assumed to return .id. and accept" "" { target *-*-* } 0 } */
+/* { dg-warning ".\.\.\.. as arguments" "" { target *-*-* } 0 } */