gistfile1.m

#import <objc/objc-class.h>

@implementation NSObject (override)

- (void) releaseLog
{
    fprintf(stderr, "release: %s\n", class_getName([self class]));
    // now call the original implementation (swapped with releaseLog)
    // to actually effect the release
    [self releaseLog];
}

- (id) autoreleaseLog
{
    fprintf(stderr, "autorelease: %s\n", class_getName([self class]));
    // now call the original implementation (swapped with autoreleaseLog)
    return [self autoreleaseLog];
}

@end