As a status update: There is still a Null PMC access with Parrot and the errors
with Moar and JVM don't look that good as well:
$ perl6-p -e 'sub a is export { "a" }; say EXPORT::ALL'
===SORRY!===
Error while compiling op callstatic (source text: "say EXPORT::ALL"): Null PMC
access in find_method('handle')
$ perl6-m -e 'sub a is export { "a" }; say EXPORT::ALL'
===SORRY!===
Object of type ALL in QAST::WVal, but not in SC
$ perl6-j -e 'sub a is export { "a" }; say EXPORT::ALL'
===SORRY!===
No such method 'jast' for invocant of type 'NQPMu'
