On Mon, Feb 28, 2022 at 12:10 PM Linus Torvalds torvalds@linux-foundation.org wrote:
We can do
typeof(pos) posin the 'for ()' loop, and never use __iter at all.
That means that inside the for-loop, we use a _different_ 'pos' than outside.
The thing that makes me throw up in my mouth a bit is that in that
typeof(pos) pos
the first 'pos' (that we use for just the typeof) is that outer-level 'pos', IOW it's a *different* 'pos' than the second 'pos' in that same declaration that declares the inner level shadowing new 'pos' variable.
If I was a compiler person, I would say "Linus, that thing is too ugly to live", and I would hate it. I'm just hoping that even compiler people say "that's *so* ugly it's almost beautiful".
Because it does seem to work. It's not pretty, but hey, it's not like our headers are really ever be winning any beauty contests...
Linus