vm_method.c: quote method name

* vm_method.c (set_method_visibility): quote unprintable method name.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40922 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,7 @@
+Sat May 25 11:27:32 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* vm_method.c (set_method_visibility): quote unprintable method name.
+
 Sat May 25 11:24:24 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* eval.c (rb_frame_callee): returns the called name of the current

vm_method.c

@@ -1274,7 +1274,8 @@ set_method_visibility(VALUE self, int argc, VALUE *argv, rb_method_flag_t ex)
     secure_visibility(self);
 
     if (argc == 0) {
-	rb_warning("%s with no argument is just ignored", rb_id2name(rb_frame_callee()));
+	rb_warning("%"PRIsVALUE" with no argument is just ignored",
+		   QUOTE_ID(rb_frame_callee()));
     }
 
     for (i = 0; i < argc; i++) {