[perl #86880] [BUG] Null PMC access when instantiating a class doing a role with a private 'my'-scoped attribute in Rakudo

[Carl Mäsak]

# New Ticket Created by  "Carl Mäsak" 
# Please include the string:  [perl #86880]
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# <URL: http://rt.perl.org/rt3/Ticket/Display.html?id=86880 >


<colomon> rakudo: role Breakable { my $!broken = Bool::False; }; class
Frobnitz does Breakable {}; say Frobnitz.new()
<p6eval> rakudo d5ccf9: OUTPUT«===SORRY!===␤Null PMC access in get_attr_str()␤»
* masak submits rakudobug
<colomon> masak++
<masak> rakudo: class Frobnitz {}; say Frobnitz.new().broken
<p6eval> rakudo d5ccf9: OUTPUT«Method 'broken' not found for invocant
of class 'Frobnitz' [...]