1 files changed, 6 insertions, 0 deletions
diff --git a/ChangeLog b/ChangeLog
index f03ef1433b..6ceb63411d 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+Sat Oct  1 00:53:28 2016  Kazuki Tsujimoto  <kazuki@callcc.net>
+
+	* array.c (flatten): use rb_obj_class instead of rb_class_of
+	  because rb_class_of may return a singleton class.
+	  [ruby-dev:49781] [Bug #12738]
+
 Sat Oct  1 00:52:34 2016  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* man/irb.1: remove useless -width option.