From @coke

14​:02 < [Coke]> r​: my $foo = [42 ]; $foo[1] = $foo; say $foo.perl; say
  $foo.perl.EVAL
14​:02 <+camelia> rakudo-jvm 078d0b​: OUTPUT«(my \Array_897186540 = $[42,
  Array_897186540])␤java.lang.NullPointerException␤ in block
  <unit> at EVAL_0​:1␤ in block <unit> at /tmp/tmpfile​:1␤␤»
14​:02 <+camelia> ..rakudo-moar 078d0b​: OUTPUT«(my \Array_140538609984720 =
  $[42, Array_140538609984720])␤[42 (Mu)]␤»

JVM throws a NPE.

--
Will "Coke" Coleda

From @usev6

This works now (and the test in S02-names-vars/list_array_perl.t is unfudged)​:

$ ./perl6-j -e 'my $foo = [42 ]; $foo[1] = $foo; say $foo.perl; say $foo.perl.EVAL'
((my @​Array_1924162593) = $[42, @​Array_1924162593])
(\Array_532302454 = [[42 Array_532302454]])

I'm closing this ticket as 'resolved'.

@usev6 - Status changed from 'new' to 'resolved'