BOOTSTRAP.pm.diff

--- src/Perl6/Metamodel/BOOTSTRAP.pm.orig       2011-10-31 19:22:14.000000000 +0000
+++ src/Perl6/Metamodel/BOOTSTRAP.pm    2011-10-31 19:22:28.000000000 +0000
@@ -28,7 +28,7 @@ my class BOOTSTRAPATTR {
     method box_target() { $!box_target }
     method has_accessor() { 0 }
     method has-accessor() { 0 }
-    method build() { }
+    method build() { pir::null__P() }
     method is_generic() { $!type.HOW.archetypes.generic }
     method instantiate_generic($type_environment) {
         my $ins := $!type.HOW.instantiate_generic($!type, $type_environment);