Avoid core dump in _outPathInfo() for Path without a parent RelOptInfo.
Nearly all Paths have parents, but a ResultPath representing an empty FROM
clause does not. Avoid a core dump in such cases. I believe this is only
a hazard for debugging usage, not for production, else we'd have heard
about it before. Nonetheless, back-patch to 9.1 where the troublesome code
was introduced. Noted while poking at bug #11703.
Branch
------
REL9_2_STABLE
Details
-------
http://git.postgresql.org/pg/commitdiff/6de1b53458a7d74276b087d12d34798bc5f3226b
Modified Files
--------------
src/backend/nodes/outfuncs.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
