I'd just like to point out that at least in the draft C89 standard (http://port70.net/~nsz/c/c89/c89-draft.html#4.11.6.3 http://port70.net/~nsz/c/c89/c89-draft.

I'd just like to point out that at least in the draft C89 standard (http://port70.net/~nsz/c/c89/c89-draft.html#4.11.6.3 http://port70.net/~nsz/c/c89/c89-draft.html#4.11.6.3), strlen() had the same prototype as it has today: in other words it returns size_t. Not int.