I think I have a handful of negative numbers in hundreds of thousands of lines of C code. It's quite rare, IME. By the way, an underflowed/large unsigned numbe

I think I have a handful of negative numbers in hundreds of thousands of lines of C code. It's quite rare, IME. By the way, an underflowed/large unsigned number used when a signed number is expected in most contexts (e.g: when adding as an offset) will behave correctly. It will fail when you try to compare it using < or >. If you use enable gcc warnings (which you ought to for every conceivably useful warnings :-) ), that will be caught.