[perl #77390] Rakudo allows null patterns in alternations

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# New Ticket Created by  Moritz Lenz 
# Please include the string:  [perl #77390]
# in the subject line of all future correspondence about this issue. 
# <URL: http://rt.perl.org/rt3/Ticket/Display.html?id=77390 >


21:13 < moritz_> rakudo: / | /; say "alive"
21:13 <+p6eval> rakudo 689bb7: OUTPUT«alive␤»
21:13 < moritz_> std: / | /
21:13 <+p6eval> std 32092: OUTPUT«===SORRY!===␤Null pattern not allowed
at /tmp/seCzwubd7Z line 1:␤------> / | ⏏/␤    expecting
quantifier␤Parse failed␤FAILED 00:01 115m␤»