Infinite loop in PredicateList.joinClauseTransitiveClosure()

This sequence of statements triggers an infinite loop in PredicateList.joinClauseTransitiveClosure() and never completes:

create table c (a int, b int, c int);
create table cc (aa int);

select * from cc t1, c t2, cc t3 where t3.aa = t2.a and t3.aa = t2.b and t3.aa = t2.c;