From f3279b41e6441f9b4032cad79d984218cf47703d Mon Sep 17 00:00:00 2001
From: "Yukihiro \"Matz\" Matsumoto" <matz@ruby.or.jp>
Date: Thu, 30 Nov 2017 07:58:11 +0900
Subject: Stop infinite recursion in `Class#to_s`; fix #3861

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

(limited to 'src/variable.c')

diff --git a/src/variable.c b/src/variable.c
index 93fe8aba9..f0bfa19cc 100644
--- a/src/variable.c
+++ b/src/variable.c
@@ -948,6 +948,7 @@ find_class_sym(mrb_state *mrb, struct RClass *outer, struct RClass *c)
   struct csym_arg arg;
  
   if (!outer) return 0;
+  if (outer == c) return 0;
   arg.c = c;
   arg.sym = 0;
   iv_foreach(mrb, outer->iv, csym_i, &arg);
-- 
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