1 files changed, 15 insertions, 0 deletions
diff --git a/lib/puppet/util/monkey_patches.rb b/lib/puppet/util/monkey_patches.rb
index bdce5ec1d..1c35ae523 100644
--- a/lib/puppet/util/monkey_patches.rb
+++ b/lib/puppet/util/monkey_patches.rb
@@ -48,6 +48,7 @@ if RUBY_VERSION == '1.8.7'
   end
 end
 
+
 class Object
   # ActiveSupport 2.3.x mixes in a dangerous method
   # that can cause rspec to fork bomb
@@ -56,3 +57,17 @@ class Object
     raise NotImplementedError, "Kernel.daemonize is too dangerous, please don't try to use it."
   end
 end
+
+# Workaround for yaml_initialize, which isn't supported before Ruby
+# 1.8.3.
+if RUBY_VERSION == '1.8.1' || RUBY_VERSION == '1.8.2'
+  YAML.add_ruby_type( /^object/ ) { |tag, val|
+    type, obj_class = YAML.read_type_class( tag, Object )
+    r = YAML.object_maker( obj_class, val )
+    if r.respond_to? :yaml_initialize
+      r.instance_eval { instance_variables.each { |name| remove_instance_variable name } }
+      r.yaml_initialize(tag, val)
+    end
+    r
+  }
+end