From 56a35131a455ea1d00711e8e3f4f06a51c32f967 Mon Sep 17 00:00:00 2001
From: "Yukihiro \"Matz\" Matsumoto" <matz@ruby.or.jp>
Date: Fri, 22 Apr 2022 16:09:30 +0900
Subject: [PATCH] numeric.c (mrb_cmp): should not raise NoMethodError.

Even when `obj1` does not have `<=>` method.
---
 src/numeric.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/numeric.c b/src/numeric.c
index e55ee591b..be49c9e70 100644
--- a/src/numeric.c
+++ b/src/numeric.c
@@ -1929,6 +1929,7 @@ mrb_cmp(mrb_state *mrb, mrb_value obj1, mrb_value obj2)
       return -2;
     return mrb_str_cmp(mrb, obj1, obj2);
   default:
+    if (!mrb_respond_to(mrb, obj1, MRB_OPSYM(cmp))) return -2;
     v = mrb_funcall_id(mrb, obj1, MRB_OPSYM(cmp), 1, obj2);
     if (mrb_nil_p(v) || !mrb_integer_p(v))
       return -2;