From 5872fd6f6cc5ddde33df94fb11e773eeb653e55e Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Thu, 1 Dec 2022 22:50:25 +0900
Subject: [Feature #19163] Marshal-loaded Data object also should be frozen

---
 struct.c | 1 +
 1 file changed, 1 insertion(+)

(limited to 'struct.c')

diff --git a/struct.c b/struct.c
index def15b0186..3733669eab 100644
--- a/struct.c
+++ b/struct.c
@@ -786,6 +786,7 @@ VALUE
 rb_struct_initialize(VALUE self, VALUE values)
 {
     rb_struct_initialize_m(RARRAY_LENINT(values), RARRAY_CONST_PTR(values), self);
+    if (rb_obj_is_kind_of(self, rb_cData)) OBJ_FREEZE_RAW(self);
     RB_GC_GUARD(values);
     return Qnil;
 }
-- 
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