From ff8a775c57dc9a5640fb26b5e061bcdf01292c29 Mon Sep 17 00:00:00 2001
From: ko1 <ko1@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Sun, 23 Dec 2018 15:02:17 +0000
Subject: [PATCH] move checking code.

* gc.c (gc_mark_ptr): this check was introduced by accidentaly
  (this is why message is "...", crazy simple) for debugging.
  However, this check is useful because if there is T_NONE
  object here, we can't know which object points to it.
  For debugging reason, I remain this checking code and
  set reasonable error message.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@66514 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 gc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gc.c b/gc.c
index 0e1a4f39c4..71a3f032ad 100644
--- a/gc.c
+++ b/gc.c
@@ -4570,9 +4570,9 @@ static void
 gc_mark_ptr(rb_objspace_t *objspace, VALUE obj)
 {
     if (LIKELY(objspace->mark_func_data == NULL)) {
-        if (RB_TYPE_P(obj, T_NONE)) rb_bug("...");
 	rgengc_check_relation(objspace, obj);
 	if (!gc_mark_set(objspace, obj)) return; /* already marked */
+        if (RB_TYPE_P(obj, T_NONE)) rb_bug("try to mark T_NONE object"); /* check here will help debugging */
 	gc_aging(objspace, obj);
 	gc_grey(objspace, obj);
     }