https://git.ruby-lang.org/ruby.git/commit/?id=165e457236

From 165e4572363f964e28cfdc51fe26de6728a5c174 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@r...>
Date: Tue, 17 Mar 2020 19:46:03 +0900
Subject: Check if `freeze` option is given


diff --git a/object.c b/object.c
index 0f5650e..69a9fd0 100644
--- a/object.c
+++ b/object.c
@@ -432,7 +432,7 @@ freeze_opt(int argc, VALUE *argv) https://github.com/ruby/ruby/blob/trunk/object.c#L432
     rb_scan_args(argc, argv, "0:", &opt);
     if (!NIL_P(opt)) {
 	rb_get_kwargs(opt, keyword_ids, 0, 1, &kwfreeze);
-        ret = obj_freeze_opt(kwfreeze);
+        if (kwfreeze != Qundef) ret = obj_freeze_opt(kwfreeze);
     }
     return ret;
 }
-- 
cgit v0.10.2


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