From d121075e49d13c8c5ee0872a7a2bffcca7d2810b Mon Sep 17 00:00:00 2001
From: "Yukihiro \"Matz\" Matsumoto" <matz@ruby.or.jp>
Date: Mon, 24 May 2021 07:06:57 +0900
Subject: class.c: no need to create aliases if both symbols are same.

---
 src/class.c | 1 +
 1 file changed, 1 insertion(+)

(limited to 'src')

diff --git a/src/class.c b/src/class.c
index 046e99f26..30e2b2603 100644
--- a/src/class.c
+++ b/src/class.c
@@ -2197,6 +2197,7 @@ mrb_obj_class(mrb_state *mrb, mrb_value obj)
 MRB_API void
 mrb_alias_method(mrb_state *mrb, struct RClass *c, mrb_sym a, mrb_sym b)
 {
+  if (a == b) return;
   mrb_method_t m = mrb_method_search(mrb, c, b);
 
   if (!MRB_METHOD_CFUNC_P(m)) {
-- 
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