From e0264791f013f1d1de51bc9be823a3eb042a0293 Mon Sep 17 00:00:00 2001
From: Jean Boussier <jean.boussier@gmail.com>
Date: Thu, 17 Apr 2025 07:37:14 +0900
Subject: [PATCH] [ruby/json] Get rid of unused CircularDatastructure class

https://github.com/ruby/json/commit/92beca8032
---
 ext/json/lib/json/common.rb | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/ext/json/lib/json/common.rb b/ext/json/lib/json/common.rb
index b5fbfcf05d..254ed0920b 100644
--- a/ext/json/lib/json/common.rb
+++ b/ext/json/lib/json/common.rb
@@ -236,10 +236,6 @@ module JSON
   # deep.
   class NestingError < ParserError; end
 
-  # :stopdoc:
-  class CircularDatastructure < NestingError; end
-  # :startdoc:
-
   # This exception is raised if a generator or unparser error occurs.
   class GeneratorError < JSONError
     attr_reader :invalid_object