From 6029783b1b8efb983218905bc956e5a1bb2ff428 Mon Sep 17 00:00:00 2001
From: tb <>
Date: Fri, 24 Aug 2018 19:27:01 +0000
Subject: In DSO_up_ref(), check return value of CRYPTO_add() and report
 failure accordingly.

ok jsing
---
 src/lib/libcrypto/dso/dso_lib.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/lib/libcrypto/dso/dso_lib.c b/src/lib/libcrypto/dso/dso_lib.c
index 7902fbcc6e..6dc98803ec 100644
--- a/src/lib/libcrypto/dso/dso_lib.c
+++ b/src/lib/libcrypto/dso/dso_lib.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: dso_lib.c,v 1.19 2017/01/29 17:49:23 beck Exp $ */
+/* $OpenBSD: dso_lib.c,v 1.20 2018/08/24 19:27:01 tb Exp $ */
 /* Written by Geoff Thorpe (geoff@geoffthorpe.net) for the OpenSSL
  * project 2000.
  */
@@ -174,13 +174,15 @@ DSO_flags(DSO *dso)
 int
 DSO_up_ref(DSO *dso)
 {
+	int refs;
+
 	if (dso == NULL) {
 		DSOerror(ERR_R_PASSED_NULL_PARAMETER);
 		return (0);
 	}
 
-	CRYPTO_add(&dso->references, 1, CRYPTO_LOCK_DSO);
-	return (1);
+	refs = CRYPTO_add(&dso->references, 1, CRYPTO_LOCK_DSO);
+	return ((refs > 1) ? 1 : 0);
 }
 
 DSO *
-- 
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