--- /dev/null
+#include <stdio.h>
+#include <objc/runtime.h>
+#import <Foundation/Foundation.h>
+
+@interface TargetClass : NSObject
+@end
+
+@interface TargetClass(LoadedMethods)
+- (void) m0;
+- (void) m1;
+- (void) m2;
+- (void) m3;
+- (void) m4;
+- (void) m5;
+- (void) m6;
+- (void) m7;
+- (void) m8;
+- (void) m9;
+- (void) m10;
+- (void) m11;
+- (void) m12;
+- (void) m13;
+- (void) m14;
+- (void) m15;
+@end
+
+@interface TN:TargetClass
+@end
+
+@implementation TN
+- (void) m1; { [super m1]; }
+- (void) m3; { [self m1]; }
+
+- (void) m2
+{
+ [self willChangeValueForKey: @"m4"];
+ [self didChangeValueForKey: @"m4"];
+}
+
+- (void)observeValueForKeyPath:(NSString *) keyPath
+ ofObject:(id)object
+ change:(NSDictionary *)change
+ context:(void *)context
+{
+ // suppress warning
+ keyPath = nil;
+ object = nil;
+ change = nil;
+ context = NULL;
+}
+@end
+
+@implementation TargetClass(LoadedMethods)
+- (void) m0;{ ; }
+- (void) m1;{ ; }
+- (void) m2;{ ; }
+- (void) m3;{ ; }
+- (void) m4;{ ; }
+- (void) m5;{ ; }
+- (void) m6;{ ; }
+- (void) m7;{ ; }
+- (void) m8;{ ; }
+- (void) m9;{ ; }
+- (void) m10;{ ; }
+- (void) m11;{ ; }
+- (void) m12;{ ; }
+- (void) m13;{ ; }
+- (void) m14;{ ; }
+- (void) m15;{ ; }
+@end