Re: [GIT PULL] hotfixes for 6.3-rc1

[Linus Torvalds]

On Sat, Mar 4, 2023 at 3:21 PM Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> wrote:
>
> Ah. Ying did it this way:

Yeah, I saw that patch flying past, but I actually think that it only
silences the warning almost by mistake. There's nothing fundamental in
there that a compiler wouldn't just follow across two assignments, and
it just happens to now not trigger any more.

Assigning to a union entry is a more fundamental operation in that
respect. Not that the compiler still doesn't see that it's assigning a
value that in the end is not really type compatible, so a different
version of gcc could still warn, but at that point I feel like it's
more of an actual compiler bug than just "oh, the compiler didn't
happen to follow the cast through a temporary".

            Linus