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+Tue Jun 14 23:43:00 2016  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* include/ruby/backward.h (rb_cFixnum, rb_cBignum): remove the
+	  backward compatibility macros, to fail incompatible extension
+	  libraries earily.  [Bug #12427]
+
 Tue Jun 14 22:22:07 2016  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* strftime.c (rb_strftime_with_timespec): limit the result string