https://git.ruby-lang.org/ruby.git/commit/?id=9a0a165a5d

From 9a0a165a5d6d0bc4ed18cb92d05593796f703359 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@r...>
Date: Fri, 21 Oct 2022 00:43:08 +0900
Subject: Check writebarrier arguments

---
 gc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/gc.c b/gc.c
index 44b3f6a83c..e47a4adb1f 100644
--- a/gc.c
+++ b/gc.c
@@ -8920,8 +8920,8 @@ rb_gc_writebarrier(VALUE a, VALUE b) https://github.com/ruby/ruby/blob/trunk/gc.c#L8920
 {
     rb_objspace_t *objspace = &rb_objspace;
 
-    if (RGENGC_CHECK_MODE && SPECIAL_CONST_P(a)) rb_bug("rb_gc_writebarrier: a is special const");
-    if (RGENGC_CHECK_MODE && SPECIAL_CONST_P(b)) rb_bug("rb_gc_writebarrier: b is special const");
+    if (SPECIAL_CONST_P(a)) rb_bug("rb_gc_writebarrier: a is special const: %"PRIxVALUE, a);
+    if (SPECIAL_CONST_P(b)) rb_bug("rb_gc_writebarrier: b is special const: %"PRIxVALUE, b);
 
   retry:
     if (!is_incremental_marking(objspace)) {
-- 
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