[perl #76728] Null PMC for assigning values to optional parameter

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# New Ticket Created by  Wenzel Peppmeyer 
# Please include the string:  [perl #76728]
# in the subject line of all future correspondence about this issue. 
# <URL: http://rt.perl.org/rt3/Ticket/Display.html?id=76728 >


$ perl6
 > sub a(%p1?){ %p1<a> = 1 };a();
Null PMC access in invoke()

-- 
Nobody knows the age of the human race, but everybody agrees that it is 
old enough to know better.
        -- Anonymous