Thanks for catching that!I used signed because I was worried about offbeat hosts where UINTMAX_MAX < OFF_T_MAX, which I think POSIX allows, but I suppose I was going overboard.
There are still a few oddball hosts out there (I just the other day discovered that Unisys still ships POSIXish mainframes where UINTMAX_MAX == OFF_T_MAX, because off_t has 40 bits and uintmax_t has 39!) but nothing *that* weird as far as I know.
