--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/modules/stdlib/lib/puppet/functions/validate_bool.rb	Fri Jan 03 19:56:04 2020 +0000
@@ -0,0 +1,18 @@
+Puppet::Functions.create_function(:validate_bool) do
+  dispatch :deprecation_gen do
+    param 'Any', :scope
+    repeated_param 'Any', :args
+  end
+  # Workaround PUP-4438 (fixed: https://github.com/puppetlabs/puppet/commit/e01c4dc924cd963ff6630008a5200fc6a2023b08#diff
+  #   -c937cc584953271bb3d3b3c2cb141790R221) to support puppet < 4.1.0 and puppet < 3.8.1.
+  def call(scope, *args)
+    manipulated_args = [scope] + args
+    self.class.dispatcher.dispatch(self, scope, manipulated_args)
+  end
+
+  def deprecation_gen(scope, *args)
+    call_function('deprecation', 'validate_bool', 'This method is deprecated, please use the stdlib validate_legacy function,
+                    with Stdlib::Compat::Bool. There is further documentation for validate_legacy function in the README.')
+    scope.send('function_validate_bool', args)
+  end
+end