string.c: check argument type

* string.c (rb_str_quote_unprintable): check if argument is a string.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40920 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 4 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index a4c1bc6d68..419864a262 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Sat May 25 08:58:23 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* string.c (rb_str_quote_unprintable): check if argument is a string.
+
 Fri May 24 19:32:00 2013  Charlie Somerville  <charliesome@ruby-lang.org>
 
 	* variable.c (set_const_visibility): use rb_frame_this_func() instead