It was in v6 (and a nasty bug):
/*
* sizeof gets turned into a number here.
* Bug: sizeof(structure-member-array) is 2 because
* the array has been turned into a ptr already.
*/
if (op==SIZEOF) {
t1 = length(p1);
p1->op = CON;
p1->type = INT;
p1->dimp = 0;
p1->value = t1;
*cp++ = p1;
return;
}
but in v7 (without the bug):
/*
* sizeof gets turned into a number here.
*/
if (op==SIZEOF) {
t1 = cblock(length(p1));
t1->type = UNSIGN;
*cp++ = t1;
return;
}
It's not surprising, since "unsigned" didn't originally exist (use "char*"!)
On 22 November 2012 11:36, Richard Miller <[email protected]> wrote:
>> New C programmers are often confused by
>> size_t being unsigned (even experienced ones at times)
>
> Especially experienced ones. My 1978 copy of K&R says
>
> "The expression sizeof(object) yields an integer equal to the
> size of the specified object."
>
> Not "unsigned integer". Old habits die hard.
>
>
