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+Fri Jul 15 19:11:00 2011  Kenta Murata  <mrkn@mrkn.jp>
+
+	* bignum.c (bigsub_int): add RB_GC_GUARD.  This patch is made by
+	  Makoto Kishimoto.  fixes #4223 [ruby-dev:42907]
+
+	* bignum.c (bigadd_int): ditto.
+
 Fri Jul 15 14:27:53 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
 
 	* win32/win32.c, include/ruby/win32.h (rb_w32_io_cancelable_p): renamed