[PATCH 2/6] treewide: remove using list iterator after loop body as a ptr

Linus Torvalds torvalds at linux-foundation.org
Tue Mar 1 07:10:24 AEDT 2022

On Mon, Feb 28, 2022 at 12:03 PM Linus Torvalds
<torvalds at linux-foundation.org> wrote:
> Side note: we do need *some* way to do it.


This patch is a work of art.

And I mean that in the worst possible way.

We can do

        typeof(pos) pos

in the 'for ()' loop, and never use __iter at all.

That means that inside the for-loop, we use a _different_ 'pos' than outside.

And then the compiler will not see some "might be uninitialized", but
the outer 'pos' *will* be uninitialized.

Unless, of course, the outer 'pos' had that pointless explicit initializer.

Here - can somebody poke holes in this "work of art" patch?

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