From fc5a4a227968001cb031802c5a122cdbb0323b25 Mon Sep 17 00:00:00 2001
From: Rickard Green <rickard@erlang.org>
Date: Thu, 16 Feb 2017 19:11:54 +0100
Subject: Handle magic refs in db_cleanup_offheap_comp()

---
 erts/emulator/beam/erl_db_util.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/erts/emulator/beam/erl_db_util.c b/erts/emulator/beam/erl_db_util.c
index 3ac2bdd3d6..6f30b1d3dd 100644
--- a/erts/emulator/beam/erl_db_util.c
+++ b/erts/emulator/beam/erl_db_util.c
@@ -3104,6 +3104,11 @@ void db_cleanup_offheap_comp(DbTerm* obj)
 		erts_erase_fun_entry(u.fun->fe);
 	    }
 	    break;
+	case REF_SUBTAG:
+	    ASSERT(is_magic_ref_thing(u.hdr));
+	    if (erts_refc_dectest(&u.mref->mb->refc, 0) == 0)
+		erts_bin_free((Binary *)u.mref->mb);		    
+	    break;
 	default:
 	    ASSERT(is_external_header(u.hdr->thing_word));
 	    ASSERT(u.pb != &tmp);
-- 
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