Description of problem:

When evaluating a query with forall, such as

query ifAllPersonsAreOlderReturnThem (int pAge)
    forall ( Person(age > pAge) )
    $person : Person()
end

the following NPE is thrown:

java.lang.NullPointerException
	at org.drools.core.util.LinkedList.add(LinkedList.java:113)
	at org.drools.core.phreak.SegmentUtilities.createSegmentMemory(SegmentUtilities.java:145)
	at org.drools.core.phreak.SegmentUtilities.createChildSegment(SegmentUtilities.java:331)
	at org.drools.core.phreak.SegmentUtilities.createChildSegments(SegmentUtilities.java:323)
	at org.drools.core.reteoo.LeftInputAdapterNode.doInsertObject(LeftInputAdapterNode.java:215)
	at org.drools.core.common.AbstractWorkingMemory.evalQuery(AbstractWorkingMemory.java:552)
	at org.drools.core.common.AbstractWorkingMemory.getQueryResults(AbstractWorkingMemory.java:446)
	at org.drools.core.impl.StatefulKnowledgeSessionImpl.getQueryResults(StatefulKnowledgeSessionImpl.java:816)

Version-Release number of selected component (if applicable):

BRMS 6.0.0 ER7

How reproducible:

Please run QueryTest from the attached maven project with reproducer:

mvn clean test -Dtest=QueryTest -Ddrools.ruleEngine=reteoo

The test passes with phreak.

Actual results:

A NPE is thrown.

Expected results:

The test passes.
Additional info: