https://git.ruby-lang.org/ruby.git/commit/?id=a8581ce673

From a8581ce673e14ba5ff48d0a3cb71368daa82558b Mon Sep 17 00:00:00 2001
From: Aaron Patterson <tenderlove@r...>
Date: Wed, 4 Nov 2020 11:33:59 -0800
Subject: ensure T_OBJECT objects have internals initialized


diff --git a/gc.c b/gc.c
index 6587689..abc311a 100644
--- a/gc.c
+++ b/gc.c
@@ -2304,7 +2304,11 @@ rb_newobj(void) https://github.com/ruby/ruby/blob/trunk/gc.c#L2304
 VALUE
 rb_newobj_of(VALUE klass, VALUE flags)
 {
-    return newobj_of(klass, flags & ~FL_WB_PROTECTED, 0, 0, 0, flags & FL_WB_PROTECTED);
+    if ((flags & RUBY_T_MASK) == T_OBJECT) {
+        return newobj_of(klass, (flags | ROBJECT_EMBED) & ~FL_WB_PROTECTED , Qundef, Qundef, Qundef, flags & FL_WB_PROTECTED);
+    } else {
+        return newobj_of(klass, flags & ~FL_WB_PROTECTED, 0, 0, 0, flags & FL_WB_PROTECTED);
+    }
 }
 
 #define UNEXPECTED_NODE(func) \
-- 
cgit v0.10.2


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