diff --git a/ChangeLog b/ChangeLog
index 702bc23289..a3fc2a7749 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Fri Jun  7 13:22:43 2013  NARUSE, Yui  <naruse@ruby-lang.org>
+
+	* gc.c (before_gc_sweep): noinline can also avoid the segv instead of
+	  -O0 of r41084. this way is expected less slow.
+
 Fri Jun  7 11:45:42 2013  Kenta Murata  <mrkn@cookpad.com>
 
 	* rational.c (numeric_quo): move num_quo in numeric.c to numeric_quo
diff --git a/gc.c b/gc.c
index f97a74e2dc..eb37abd82b 100644
--- a/gc.c
+++ b/gc.c
@@ -2288,7 +2288,7 @@ ready_to_gc(rb_objspace_t *objspace)
 }
 
 #if defined(__GNUC__) && __GNUC__ == 4 && __GNUC_MINOR__ == 4
-__attribute__((optimize("O0")))
+__attribute__((noinline))
 #endif
 static void
 before_gc_sweep(rb_objspace_t *objspace)