Running the command manually everything is fine (on Parrot, Moar and JVM), but
running it as a test resurrects the Null PMC access:
$ perl6-p -e 'sub circumfix:<w "> ($a) { }; say q[alive]'
alive
$ PERL6LIB=lib perl6-p -e 'use Test; lives_ok { sub circumfix:<w "> ($a) { };
}, "running under Test.pm"'
not ok 1 - running under Test.pm
# Failed test 'running under Test.pm'
# at -e line 1
# Null PMC access in find_method('clone')
Running it in REPL is also fine:
> sub circumfix:<w "> ($a) { }; say "alive"
alive
The nice thing is, that I found out about the problem under Test.pm while
adding a test to S06-operator-overloading/sub.t with the following commit:
https://github.com/perl6/roast/commit/18a47abfb3
