On Tue Jun 30 13:41:37 2015, barto...@gmx.de wrote:
> On Mon Jun 29 14:21:31 2015, barto...@gmx.de wrote:
> > Unfortunatly, another NullPointerException surfaces when looking at
> > the newly created $a:
> >
> > $ perl6-j -e 'class Foo is repr<CStruct> { has int32 $.idontcare; has
> > Foo $.bar }; my $a = Foo.new; say $a.bar'
> > java.lang.NullPointerException
> > in block <unit> at -e:1
>
> I tried to look at this NPE, but was unable to find a fix. However,
> here is what I suspect -- maybe it is useful for someone else:
>
> I think the NPE happens in
> nqp/src/vm/jvm/runtime/org/perl6/nqp/sixmodel/reprs/CStructInstance.java:95
> (within public SixModelObject get_attribute_boxed) with the following
> code:
>
> o = (Object)Structure.newInstance(structClass, ((Pointer)o));
>
> Four lines above 'o' is created with
>
> Object o = storage.readField(name);
>
> but 'storage.readField(name)' seems to be 'null'. Maybe this is not
> filled properly when the Perl 6 object is created?
This appears to be working now; closable with tests:
09:57 < [Coke]> r: class Foo is repr<CStruct> { has int32 $.idontcare; has Foo
$.bar }; my $a = Foo.new; say 42;
09:57 <+camelia> rakudo-{moar,jvm} ba7027: OUTPUT«42»
--
Will "Coke" Coleda
