Subject: Re: build broken at usr.bin/fstat
To: Ross Harvey <firstname.lastname@example.org>
From: None <email@example.com>
Date: 07/16/1998 19:32:56
In message <199807162242.PAA02561@random.teraflop.com>, Ross Harvey writes:
> The problem:
printf("%d", sizeof something);
> The compiler issues a warning in 64-bit environments, the reason
> the warning doesn't always happen:
> sizeof returns type size_t, which is an int in ILP32,
> but a long in LP64
It doesn't matter, it's wrong anyway. It's an *UNSIGNED* int, and,
if we're going to pick nits, it is *not* permissible (in C89, with
the most recent set of rulings, I think) to pass an unsigned anything
> A. Cast to (void *) and use %p
This is very surprising, and not (IMHO) well defined.
> B. Cast to (int) or (unsigned int)
I like this one.
> C. Cast to (long) or (unsigned long) and use %ld
I also like this one.
However, if you want to use (unsigned long), use %lu.