ST_Buffer crashes on POLYGON Empty

[robe]

SELECT ST_Buffer(ST_GeomFromText('POLYGON EMPTY',4326) , 0.5)

separate ticket — sorry I put it in the other one since I thought it was a manifestation of the same issue.

[pramsey]

It is insofar as "empty" is the cause, but the actual code line will be totally different, so "buffer works with empty" will be closed of separately from "gml output works with empty" and even "kml output works with empty" will be distinct. Unfortunately the rich typing of empty means we have a bunch of new failure cases lurking around, kind of like with the curve types in 1.4.

[pramsey]

Fixed at r6301. There's bound to be a pile more of these in the OGC support functions.