On Tue, Oct 06, 2020 at 09:56:49PM -0400, Tom Lane wrote: > Noah Misch <n...@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 != InvalidOid", File: > >> "pg_aggregate.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.)
gram.o was it. (The way I rebuilt gram.o also rebuilt parser.o and scan.o, but those seem far less likely.)