[perl #82810] [BUG] Strange behavior when doing ||= assignment to an 'is copy' array parameter

[Carl Mäsak]

# New Ticket Created by  "Carl Mäsak" 
# Please include the string:  [perl #82810]
# in the subject line of all future correspondence about this issue. 
# <URL: http://rt.perl.org/rt3/Ticket/Display.html?id=82810 >


<masak> rakudo: sub foo(@a is copy) { @a ||= -1, -1, +1, +1; say @a };
foo([1,2,3,4]); say "alive"
<p6eval> rakudo 188755: OUTPUT«alive␤»
* masak submits rakudobug
<masak> jnthn: I'm expecting &foo to output something.
<jnthn> er, yeah, me too. :/
<jnthn> is it the is copy?
<masak> this feels familiar...
* masak czechs
<masak> I might have been remembering
http://rt.perl.org/rt3/Ticket/Display.html?id=74430
<jnthn> looks related.
<masak> yeah.
<masak> this goes in too, though.
<jnthn> Please add a ref to the other ticket.
<masak> sure thing :)
<jnthn> rakudo: sub foo(@a) { say PARROT(@a) }; sub bar(@a is copy) {
say PARROT(@a) }; foo([1,2]); bar([1,2])
<p6eval> rakudo 188755: OUTPUT«ObjectRef->ObjectRef->Array␤Array␤»
<jnthn> FAIL