Sizes can be >2gb on a 32 bit system. Not sure how ssize_t works, is it 64 bits then? It makes sense to use unsigned for sizes to save a bit (or 32 bits per si

Sizes can be >2gb on a 32 bit system. Not sure how ssize_t works, is it 64 bits then? It makes sense to use unsigned for sizes to save a bit (or 32 bits per size). Also less invalid possible inputs to handle.