RE: Logical replication 'invalid memory alloc request size 1585837200' after upgrading to 17.5

Dear Sawada-san,

> > 1.
> > USE_ASSERT_CHECKING has not been used to change the value yet. The main
> usage is
> > to call debug functions in debug build.
> 
> I think we have a similar precedent such as MT_NRELS_HASH to improve
> the test coverages.

Oh, good detection, it seems a typical way.

> > 2.
> > If we add tests which is usable only for debug build, it must be run only when it
> > is enabled. IIUC such test does not exist yet.
> 
> I think we need to test cases not to check if we reach a specific code
> point but to check if we can get the correct results even if we've
> executed various code paths. As for this bug, it is better to check
> that it works properly in a variety of cases. That way, we can check
> overflow cases and non-overflow cases also in test cases added in the
> future, improving the test coverage more.



Best regards,
Hayato Kuroda
FUJITSU LIMITED