[perl #64184] isa_ok($junction, Junction) gives Null PMC access

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# New Ticket Created by  Moritz Lenz 
# Please include the string:  [perl #64184]
# in the subject line of all future correspondence about this issue. 
# <URL: http://rt.perl.org/rt3/Ticket/Display.html?id=64184 >


08:43 < moritz_> rakudo: use Test; plan 1; isa_ok(1|2, Junction);
08:43 < p6eval> rakudo 9a84c3: OUTPUT«1..1␤Null PMC access in
                get_integer()␤current instr.: 'parrot;Junction;!type' pc
9169
                (src/classes/Junction.pir:180)␤»
08:46 < p6eval> rakudo 9a84c3: OUTPUT«any(1)␤»
08:46 < moritz_> rakudo: say (1|"str").isa(Int).perl
08:46 < p6eval> rakudo 9a84c3: OUTPUT«any(1, 0)␤»

so .isa autothreads, and I don't know if it should. Anyway, that Null
PMC access needs fixing, as well as isa_ok() to work with Junctions.

Cheers,
Moritz