Oh, but Objective-C does the right thing using the standard and simplest way to write it, and you can subclass other people&#x27;s classes and everything!<p><a href="http:&#x2F;&#x2F;stackoverflow.com&#x2F;questions&#x2F;12522053&#x2F;what-is-a-non-fragile-abi" rel="nofollow">http:&#x2F;&#x2F;stackoverflow.com&#x2F;questions&#x2F;12522053&#x2F;what-is-a-non-fr...</a>