[perl #123969] NullPointerException on jvm for same CStruct in CStruct

[Christian Bartolomaeus via RT]

The class definition no longer results in a NullPointerException:

$ perl6-j -e 'class Foo is repr<CStruct> { has int32 $.idontcare; has Foo $.bar 
}; say "alive"'
alive

But it's not possible to create an object of class Foo (works on MoarVM):

$ perl6-j -e 'class Foo is repr<CStruct> { has int32 $.idontcare; has Foo $.bar 
}; my $a = Foo.new; say "alive"'
java.lang.NoClassDefFoundError: L__CStruct__1;
  in method bless at gen/jvm/CORE.setting:949
  in method new at gen/jvm/CORE.setting:935
  in block <unit> at -e:1