Merge branch 'master' into leap

1 files changed, 3 insertions, 0 deletions

diff --git a/lib/puppet/parser/functions/is_function_available.rb b/lib/puppet/parser/functions/is_function_available.rb
index 6cbd35c..6da82c8 100644
--- a/lib/puppet/parser/functions/is_function_available.rb
+++ b/lib/puppet/parser/functions/is_function_available.rb
@@ -15,6 +15,9 @@ true if the function exists, false if not.
         "given #{arguments.size} for 1")
     end
 
+    # Only allow String types
+    return false unless arguments[0].is_a?(String)
+
     function = Puppet::Parser::Functions.function(arguments[0].to_sym)
     function.is_a?(String) and not function.empty?
   end