Re: pgsql: Fix up misuse of "volatile" in contrib/xml2.

On Tue, Jul 08, 2025 at 09:00:39PM +0000, Tom Lane wrote:
> Fix up misuse of "volatile" in contrib/xml2.
>
> Also fix a number of places where variables that are assigned to
> within a PG_TRY and then used after it were not initialized or
> not marked as volatile.  (A few buildfarm members were issuing
> "may be used uninitialized" warnings about some of these variables,
> which is what drew my attention to this area.)  In most cases
> these variables were being set as the last step within the PG_TRY
> block, which might mean that we could get away without the "volatile"
> marking.  But doing that seems unsafe and is definitely not per our
> coding conventions.
>
> These problems seem to have come in with 732061150, so no need
> for back-patch.

Oops, thanks.  I was not aware of these reports, and the buildfarm was
not showing any red, the CI looked fine and my machine did not
complain with a rather new gcc.  What were the buildfarm members
impacted?  Did these use a switch and/or a specific compiler that
helped in detecting these problems?
--
Michael