From ffe8bf6323a6fd9a0b68b3e84745ccc820b2bc49 Mon Sep 17 00:00:00 2001
From: Rory O'Connell <19547+RoryO@users.noreply.github.com>
Date: Sat, 18 Jul 2020 13:55:45 -0700
Subject: Avoid singleton classes with mrb_class_real

---
 mrbgems/mruby-objectspace/src/mruby_objectspace.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mrbgems/mruby-objectspace/src/mruby_objectspace.c b/mrbgems/mruby-objectspace/src/mruby_objectspace.c
index f5cc7b753..b3e8605d7 100644
--- a/mrbgems/mruby-objectspace/src/mruby_objectspace.c
+++ b/mrbgems/mruby-objectspace/src/mruby_objectspace.c
@@ -353,7 +353,7 @@ static int
 os_memsize_of_all_cb(mrb_state *mrb, struct RBasic *obj, void *d)
 {
   struct os_memsize_of_all_cb_data *data = (struct os_memsize_of_all_cb_data *)d;
-  if(obj->c == data->type) data->t += os_memsize_of_object(mrb, mrb_obj_value(obj));
+  if(mrb_class_real(obj->c) == data->type) data->t += os_memsize_of_object(mrb, mrb_obj_value(obj));
   return 0;
 }
 
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