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+Thu Aug  1 21:02:48 2013  Tanaka Akira  <akr@fsij.org>
+
+	* bignum.c (rb_big2str1): Raise an error for too big number.
+
 Thu Aug  1 20:46:29 2013  Tanaka Akira  <akr@fsij.org>
 
 	* bignum.c (power_cache_get_power): Hide cached Bignum objects.