From 787487b16dce4fbb9059a70b13d31d8be679fe70 Mon Sep 17 00:00:00 2001
From: "Yukihiro \"Matz\" Matsumoto" <matz@ruby.or.jp>
Date: Fri, 19 Feb 2021 15:36:41 +0900
Subject: Check `MRB_TT_*` before object allocation; ref #5352

---
 src/gc.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'src')

diff --git a/src/gc.c b/src/gc.c
index 98a2237d5..07ca61e52 100644
--- a/src/gc.c
+++ b/src/gc.c
@@ -559,6 +559,9 @@ mrb_obj_alloc(mrb_state *mrb, enum mrb_vtype ttype, struct RClass *cls)
       mrb_raisef(mrb, E_TYPE_ERROR, "allocation failure of %C", cls);
     }
   }
+  if (ttype <= MRB_TT_FREE) {
+    mrb_raisef(mrb, E_TYPE_ERROR, "allocation failure of %C (type %d)", cls, (int)ttype);
+  }
 
 #ifdef MRB_GC_STRESS
   mrb_full_gc(mrb);
-- 
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