Message Title

Today I'm getting the same problem with Hibernate 4.3.8.Final. I have no idea how to reproduce it in a test case.

java.lang.NullPointerException
        at org.hibernate.event.internal.AbstractFlushingEventListener.prepareEntityFlushes(AbstractFlushingEventListener.java:155)
        at org.hibernate.event.internal.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:91)
        at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:55)

Before, I'm deleting a number of entities, evict some from the cache, and then call flush().

With assertions enabled, I get following, when evicting entities (one step before the above flush):

Caused by: java.lang.AssertionError
	at org.hibernate.engine.internal.EntityEntryContext.removeEntityEntry(EntityEntryContext.java:223)
	at org.hibernate.engine.internal.StatefulPersistenceContext.removeEntry(StatefulPersistenceContext.java:436)
	at org.hibernate.event.internal.DefaultEvictEventListener.onEvict(DefaultEvictEventListener.java:93)
	at org.hibernate.internal.SessionImpl.fireEvict(SessionImpl.java:1174)
	at org.hibernate.internal.SessionImpl.evict(SessionImpl.java:1167)
	at org.hibernate.jpa.spi.AbstractEntityManagerImpl.detach(AbstractEntityManagerImpl.java:1430)