When encounting an empty geometry, potential bug in the ST_3DIntersects function

[Wenjing]

Consider this query:

SELECT
ST_Intersects(a1, a2)
FROM ST_GeomFromText('GEOMETRYCOLLECTION(POINT EMPTY, POINT (0 0))') As a1
, ST_GeomFromText('POINT (0 0)') As a2;
--excepted{t}

When using the 2D Intersects function in this situation, the expected result is true because POINT(0 0) is the two geometries' intersection. PostGIS returns true.

But consider its 3D version:

SELECT
ST_3DIntersects(a1, a2)
FROM ST_GeomFromText('GEOMETRYCOLLECTION Z (POINT Z EMPTY, POINT Z (0 0 0))') As a1
, ST_GeomFromText('POINT Z (0 0 0)') As a2;
--excepted{t}; actual{f}

POINT Z (0 0 0) is the two geometries' intersection. So the excepted result of 3DIntersects is true.

But the 3DIntersects function doesn't consider they intersect only when inserting an empty geometry before this point.