Re: Getting rid of OverrideSearhPath in namespace.c

Hi,

> As a follow-up for the CVE-2023-2454 fix, I think that it makes sense to
> completely remove unsafe functions
> PushOverrideSearchPath()/PopOverrideSearchPath(), which are not used in the
> core now.
> Please look at the patch attached.
>
> [...]
>
> What do you think?

+1 to remove dead code.

The proposed patch however removes get_collation_oid(), apparently by
mistake. Other than that the patch looks fine and passes `make
installcheck-world`.

I added an entry to the nearest CF [1].

> Beside that, maybe it's worth to rename three functions in "Override" in
> their names: GetOverrideSearchPath(), CopyOverrideSearchPath(),
> OverrideSearchPathMatchesCurrent(), and then maybe struct OverrideSearchPath.
> Noah Misch proposed name GetSearchPathMatcher() for the former.

+1 as well. I added the corresponding 0002 patch.

[1] https://commitfest.postgresql.org/44/4447/

--
Best regards,
Aleksander Alekseev