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+Mon Jan 25 12:11:45 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* signal.c (USE_SIGALTSTACK): only when SA_SIGINFO also is
+	  available.  see [ruby-core:27768].
+
 Mon Jan 25 12:02:34 2010  NARUSE, Yui  <naruse@ruby-lang.org>
 
 	* dln.c, file.c, io.c, signal.c: add __HAIKU__.