> And it's tremendously unfair and probably a bug for any "optimizing compiler" to use that undefined behavior to do anything other than subtract the two pointe

> And it's tremendously unfair and probably a bug for any "optimizing compiler" to use that undefined behavior to do anything other than subtract the two pointers and return true or false when they're logically compared. https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61502 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61502 =)