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+Sun Jun 15 22:43:39 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
+
+	* struct.c (rb_struct_s_def): to_str should be called only once.
+	  [ruby-core:16647]
+
 Sun Jun 15 22:41:49 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
 
 	* ext/zlib/zlib.c (gzreader_gets): may cause infinite loop.