Alejandro Colomar <a...@kernel.org> writes:
>> > A more interesting feature is in the works: using countof() on array
>> > parameters. This needs compiler magic:
>> >
>> > void
>> > foo(size_t n, int a[n])
>> > {
>> > for (size_t i = 0; i < _Countof(a); i++)
>> > a[i] = 0;
>> > }
>> >
>> > I've implemented this for GCC, but a few corner cases still need work.
>> > Essentially, I need to implement some diagnostics to prevent stupid
>> > things. This is being discussed in the C Committee too, although I
>> > don't want to formally propose it for standardization before having it
>> > in GCC.
>> >
>> > I expect this will be ready in GCC 17.
>>
>> Cool! Ritchie's rolling over in his grave to see C approaching full
>> language support for container iterators like this. :P
>
> Actually, I think this is something that was originally devised by K&R,
> and I'm just filling the gaps. I can't see another reason they allowed
> using array notation in parameters, if they didn't want them to behave
> like that.
>
> I'm curious about what K has to say about this feature, if he would know
> about it.
You can try to contact him through his public Princeton email.
I'm not not sure how much spam he gets, but I would assume that he is
interested in answering whether or not this feature was
considered/attempted.
Collin
