* marshal.c (w_class): should not dump singleton class.

[ruby-dev:22631]

* marshal.c (class2path): check anonymous class/module before
  checking referable, and allow singleton classes.

* marshal.c (class2path): get class path and check referable.
  [ruby-dev:22588]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@6421 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

lib/thread.rb

@@ -189,11 +189,14 @@ class ConditionVariable
   # Releases the lock held in +mutex+ and waits; reacquires the lock on wakeup.
   #
   def wait(mutex)
-    mutex.exclusive_unlock do
-      @waiters.push(Thread.current)
-      Thread.stop
+    begin
+      mutex.exclusive_unlock do
+        @waiters.push(Thread.current)
+        Thread.stop
+      end
+    ensure
+      mutex.lock
     end
-    mutex.lock
   end
   
   #