Обсуждение: pgsql: Don't choke when exec_move_row assigns a synthesized null to a

Log Message:
-----------
Don't choke when exec_move_row assigns a synthesized null to a column
that happens to be composite itself.  Per bug #5314 from Oleg Serov.

Backpatch to 8.0 --- 7.4 has got too many other shortcomings in
composite-type support to make this worth worrying about in that branch.

Tags:
----
REL8_3_STABLE

Modified Files:
--------------
    pgsql/src/pl/plpgsql/src:
        pl_exec.c (r1.202.2.6 -> r1.202.2.7)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/pl/plpgsql/src/pl_exec.c?r1=1.202.2.6&r2=1.202.2.7)