Note that the article is about the meaning of "undefined" in CPU instruction documentation, claiming it's rarely or never unpredictable. Nothing to do with the

Note that the article is about the meaning of "undefined" in CPU instruction documentation, claiming it's rarely or never unpredictable. Nothing to do with the "nasal demons" of C or C++. (Though comments at the bottom do point out that some of them are situations like a floating bus, where you really do get unpredictable results.)