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+Sun Oct  2 20:05:32 2011  Kazuki Tsujimoto  <kazuki@callcc.net>
+
+	* vm.c (rb_thread_mark), cont.c (cont_mark): revert r33369 and r33371
+	  that may cause SEGV in certain environments.
+
 Sun Oct 02 12:14:06 2011  Ayumu AIZAWA  <ayumu.aizawa@gmail.com>
 
 	* test/psych/test_yamldbm.rb: add test case.