--- /dev/null
+package InvalidCase01;
+use strict;
+use warnings; no warnings 'syntax';
+use Function::Parameters qw(:strict);
+use Carp qw/croak/;
+
+method meth1{
+ croak "Binary operator $op expects 2 children, got " . $#$_
+ if @{$_} > 3;
+}
+
+method meth2{ {
+ "a" "b"
+}
+
+method meth3 {}
+1;
+