"Strong" stack protection for GCC

So the difference here is that the Mill will only cause a failure on *use* of the result, not the *generation* of the result. If you overflow an integer but never use it…who cares? The nice thing about it is that it also doesn't increase code size or extra time, so there's no overhead for the check and you don't need an instrumented build to find the problem(s).

Really, I'd just like for a C compiler to use the error-on-overflow for signed addition and such so that the undefined behavior is able to be caught without extra cost instead of it just being "some random value".