Merge remote branch 'bodepd/feature/2.6.4/5910' into 2.6.next

* bodepd/feature/2.6.4/5910:
  (#5910) Improved logging when declared classes cannot be found:

1 files changed, 7 insertions, 2 deletions

diff --git a/lib/puppet/resource.rb b/lib/puppet/resource.rb
index b0a3ecee6..e832804f5 100644
--- a/lib/puppet/resource.rb
+++ b/lib/puppet/resource.rb
@@ -205,8 +205,13 @@ class Puppet::Resource
     tag(self.title) if valid_tag?(self.title)
 
     @reference = Reference.new(@type,@title) # for serialization compatibility with 0.25.x
-
-    raise ArgumentError, "Invalid resource type #{type}" if strict? and ! resource_type
+    if strict? and ! resource_type
+      if @type == 'Class'
+        raise ArgumentError, "Could not find declared class #{title}"
+      else
+        raise ArgumentError, "Invalid resource type #{type}"
+      end
+    end
   end
 
   def ref