From 7ef8c470d211af63b0898340074db373d55bc225 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Sun, 30 Nov 2025 17:40:41 +0900
Subject: Enable check for core data types by `RUBY_DEBUG`

---
 vm_core.h | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/vm_core.h b/vm_core.h
index 39f8a4749f..8240a3b4f5 100644
--- a/vm_core.h
+++ b/vm_core.h
@@ -323,7 +323,14 @@ struct rb_calling_info {
 
 struct rb_execution_context_struct;
 
-#if 1
+#ifndef RUBY_CORE_DATA_TYPE_CHECK
+# if RUBY_DEBUG
+#   define RUBY_CORE_DATA_TYPE_CHECK 1
+# else
+#   define RUBY_CORE_DATA_TYPE_CHECK 0
+# endif
+#endif
+#if !RUBY_CORE_DATA_TYPE_CHECK
 #define GetCoreDataFromValue(obj, type, data_type, ptr) ((ptr) = (type*)RTYPEDDATA_GET_DATA(obj))
 #else
 #define GetCoreDataFromValue(obj, type, data_type, ptr) TypedData_Get_Struct(obj, type, data_type, ptr)
-- 
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