From b21c4c927df760810943d63b35c0488ce22f755a Mon Sep 17 00:00:00 2001
From: deraadt <deraadt@openbsd.org>
Date: Mon, 1 Jul 2024 18:52:22 +0000
Subject: [PATCH] signal handler must use the save_errno dance, and massage a
 variable of type 'volatile sig_atomic_t' ok tb

---
 usr.bin/openssl/speed.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/usr.bin/openssl/speed.c b/usr.bin/openssl/speed.c
index f50d224064f..84ecb9b3baa 100644
--- a/usr.bin/openssl/speed.c
+++ b/usr.bin/openssl/speed.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: speed.c,v 1.34 2023/07/27 07:01:50 tb Exp $ */
+/* $OpenBSD: speed.c,v 1.35 2024/07/01 18:52:22 deraadt Exp $ */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -150,7 +150,7 @@
 #include "./testrsa.h"
 
 #define BUFSIZE	(1024*8+64)
-int run = 0;
+volatile sig_atomic_t run = 0;
 
 static int mr = 0;
 static int usertime = 1;
@@ -193,7 +193,10 @@ static void sig_done(int sig);
 static void
 sig_done(int sig)
 {
+	int save_errno = errno;
+
 	signal(SIGALRM, sig_done);
+	errno = save_errno;
 	run = 0;
 }
 
-- 
2.20.1