Malcolm: Usability improvements in GCC 8

Malcolm: Usability improvements in GCC 8

By the way, the compiler people say "for (int i =..." is much better, nowadays, than "for (size_t i =...", although of course "for (auto val : ..." or "std::foreach(..." is better than either.

Concerning "for (int i=...", this introduces sign-extension operations when using i for array indexing when compiling for AMD64 with -fwrapv (which is needed for a lot of production code); using long instead of int is one way to solve this if you don't expect i to wrap around.

Alternatively, this problem is also solved by using size_t (if the code is correct for size_t, which it presumably is if it started out with size_t), so suggesting that users replace size_t with int makes no sense (except if a compiler maintainer wants to justify the adversarial default of -fno-wrapv by first getting the user to pessimize his program, and then using this default to undo the pessimization).