Mu ~~ 0 is false

By default, nothing defined should be accepting anything undefined.
rakudo · Sep 23, 2015 · 5a534d6 · 5a534d6
1 parent be02b7c
commit 5a534d6
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/src/core/Any.pm b/src/core/Any.pm
@@ -14,7 +14,8 @@ my role  Numeric { ... }
 my class Any { # declared in BOOTSTRAP
     # my class Any is Mu {
 
-    multi method ACCEPTS(Any:D: Mu \a) { self === a }
+    multi method ACCEPTS(Any:D: Mu:D \a) { self === a }
+    multi method ACCEPTS(Any:D: Mu:U \a) { False }
     multi method ACCEPTS(Any:U: Any \topic) { # use of Any on topic to force autothreading
         nqp::p6bool(nqp::istype(topic, self)) # so that all(@foo) ~~ Type works as expected
     }