irc: monkeypatch Singleton to make _load and _dump public.

This is to fix a possible bug in newer versions of ruby where _load was
declared private in singletons.  This would lead to errors where Marshal
could not restore the Singleton.  This "bug" was introduced to ruby
in revisions 16659 and 17396.

1 files changed, 13 insertions, 0 deletions

diff --git a/lib/rbot/irc.rb b/lib/rbot/irc.rb
index 4c462bb3..9a9998e7 100644
--- a/lib/rbot/irc.rb
+++ b/lib/rbot/irc.rb
@@ -21,6 +21,19 @@
 
 require 'singleton'
 
+# The following monkeypatch is to fix a bug in Singleton where marshaling would
+# fail when trying to restore a marshaled Singleton due to _load being declared
+# private.
+module ::Singleton
+  public :_dump
+end
+
+class << Singleton
+  module SingletonClassMethods
+    public :_load
+  end
+end
+
 class Object
 
   # We extend the Object class with a method that