ST_Dumppoints Problem with different server version

Hello Members,

I ran following query in Postgres Server 9.1 (Postgis 1.5) and Postgres Server 10 (Postgis 2.0)

select 
    st_astext((
	st_dumppoints(
		'GEOMETRYCOLLECTION(
			MULTILINESTRING(
				(0 0,1 1,1 2),
				(2 3,3 2,5 4)
			),
			MULTIPOLYGON(
				((0 0,4 0,4 4,0 4,0 0),(1 1,2 1,2 2,1 2,1 1)), 
				((-1 -1,-1 -2,-2 -2,-2 -1,-1 -1))
			)
		)'
	)
).geom)

It gives different results in both servers. The Output in 9.1 is correct.

Kindly Help

Thank you

Both, 9.1/1.5 and 10/2.0 ist really old. There might have happened a lot of changes, like i.e. the handling of geometries with no srid or geometrycollections or something else.
And you did not tell us the difference between your results.

Greetings
Uwe