From: Tom Lane <tgl@sss.pgh.pa.us>
To: Noah Misch <noah@leadboat.com>
cc: pgsql-hackers@lists.postgresql.org, David Rowley <dgrowleyml@gmail.com>
Subject: Re: Recent failures on buildfarm member hornet
In-reply-to: <20201007014507.GB1422897@rfd.leadboat.com>
References: <1830491.1601944935@sss.pgh.pa.us>
 <20201007014507.GB1422897@rfd.leadboat.com>
Comments: In-reply-to Noah Misch <noah@leadboat.com>
	message dated "Tue, 06 Oct 2020 18:45:07 -0700"
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Date: Tue, 06 Oct 2020 21:56:49 -0400
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Noah Misch <noah@leadboat.com> writes:
> On Mon, Oct 05, 2020 at 08:42:15PM -0400, Tom Lane wrote:
>> hornet has failed its last five runs with
>> TRAP: FailedAssertion("variadicArgType !=3D InvalidOid", File: "pg_aggr=
egate.c", Line: 216, PID: 34734498)

> Building the tree with -O0 suppresses the problem.  (xlc does not have -=
O1.)

OK, that's pretty unsurprising.

> Building just aggregatecmds.c and pg_aggregate.c that way does not, so I
> suppose the damage arose elsewhere.

Now that *is* surprising.  Could you poke a little further to determine
which module is getting miscompiled?  (gram.o seems like the next most
likely bet.)

			regards, tom lane