PG Bug reporting form <noreply(at)postgresql(dot)org> writes:
> PostgreSQL version: 11.1
> discard plans bug. database CRASH
This seems to be fixed already; I just get additional reports of
ERROR: cached plan must not change result type
in all branches. I didn't go through the git logs to try to
identify the relevant fix, so possibly it was post-11.2.
regards, tom lane