From f9115d65b561adeb6d36ded952949f065ad0a572 Mon Sep 17 00:00:00 2001
From: Florian Forster <ff@octo.it>
Date: Thu, 14 Sep 2017 08:37:23 +0200
Subject: [PATCH] src/liboping.c: Report right error message when select()
 fails.

After a successful call to gettimeofday(), the value of errno is
unspecified.
---
 src/liboping.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/liboping.c b/src/liboping.c
index eca5c16..5253e8c 100644
--- a/src/liboping.c
+++ b/src/liboping.c
@@ -1465,6 +1465,7 @@ int ping_send (pingobj_t *obj)
 				(unsigned) timeout.tv_usec);
 
 		int status = select (max_fd + 1, &read_fds, &write_fds, NULL, &timeout);
+		int select_errno = errno;
 
 		if (gettimeofday (&nowtime, NULL) == -1)
 		{
@@ -1474,7 +1475,7 @@ int ping_send (pingobj_t *obj)
 
 		if (status == -1)
 		{
-			ping_set_errno (obj, errno);
+			ping_set_errno (obj, select_errno);
 			dprintf ("select: %s\n", obj->errmsg);
 			return (-1);
 		}