Add test for #3419

Making sure we have a type object candidate for Int.new(value), so
that we don't infiloop.

S32-num/int.t

@@ -1,6 +1,6 @@
 use v6;
 use Test;
-plan 164;
+plan 165;
 
 # L<S32::Numeric/Real/=item truncate>
 # truncate and .Int are synonynms.
@@ -609,4 +609,9 @@ subtest 'no funny business with Ints that are not representable in double' => {
         ~ '7777506072339445587895905719156736', 'huge Ints stringify correctly';
 }
 
+# https://github.com/rakudo/rakudo/issues/3419
+{
+    dies-ok { Int.new(Int) }, 'does Int.new(Int) die?';
+}
+
 # vim: ft=perl6