* signal.c (sigexit): call rb_thread_signal_exit() instead of

  rb_exit().  [ruby-dev:26347]

* eval.c (rb_thread_signal_exit): a new function to exit on main
  thread.

* eval.c (rb_thread_switch): exit status should be retrieved from
  ruby_errinfo.

* eval.c (rb_f_exit): ensure exit(0) should call
  exit(EXIT_SUCCESS).

* missing/mkdir.c: remove. [ruby-core:05177]

* lib/delegate.rb (SimpleDelegator::__setobj__): need check for
  recursive delegation.  [ruby-core:04940]

* misc/ruby-mode.el (ruby-expr-beg): fix looking point drift.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@8614 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 2 insertions, 0 deletions

diff --git a/lib/delegate.rb b/lib/delegate.rb
index deffcaf0f5..2a30bc94b1 100644
--- a/lib/delegate.rb
+++ b/lib/delegate.rb
@@ -73,6 +73,7 @@ class SimpleDelegator<Delegator
   end
 
   def __setobj__(obj)
+    raise ArgumentError, "cannot delegate to self" if self.equal?(obj)
     @_sd_obj = obj
   end
 
@@ -110,6 +111,7 @@ def DelegateClass(superclass)
       @_dc_obj
     end
     def __setobj__(obj)
+      raise ArgumentError, "cannot delegate to self" if self.equal?(obj)
       @_dc_obj = obj
     end
     def clone