From 973f84ef558b6869ecc1e017cbe48b197726c7bf Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Thu, 6 Dec 2018 23:03:54 +0000
Subject: [PATCH] Show the class of the receiver [Feature #15231]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@66261 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 object.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/object.c b/object.c
index 5fa5322811..86a852c588 100644
--- a/object.c
+++ b/object.c
@@ -1686,7 +1686,8 @@ rb_false(VALUE obj)
 static VALUE
 rb_obj_match(VALUE obj1, VALUE obj2)
 {
-    rb_warning("Object#=~ is deprecated; it always returns nil");
+    rb_warning("deprecated Object#=~ is called on %"PRIsVALUE
+               "; it always returns nil", rb_obj_class(obj1));
     return Qnil;
 }