Peter Eisentraut <peter_e(at)gmx(dot)net> writes:
> When using psql's \dd command, the backend crashes with a segfault.
I get an Assert failure because heap_tuple_untoast_attr() tries to
allocate a ridiculous amount of memory. It looks like it's being
handed a datum pointer that's pointing at plain text, not a Datum.
I don't think it's directly the untoaster's fault ... something's
dropping the ball somewhere else...
regards, tom lane