From: Azat Khuzhin <azat@libevent.org>
Date: Sun, 9 Dec 2018 11:48:44 +0000 (+0300)
Subject: Do not check O_NONBLOCK for invalid fds
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=9d3a415a99bbc6a7e0f0b12ae3c6c5c7e4613cf1;p=libevent

Do not check O_NONBLOCK for invalid fds

Fixes: 6f988ee1 ("Merge branch 'check-O_NONBLOCK-in-debug'")
---

diff --git a/event.c b/event.c
index 4f4c9d77..3816650e 100644
--- a/event.c
+++ b/event.c
@@ -373,17 +373,18 @@ static void event_debug_assert_not_added_(const struct event *ev)
 }
 static void event_debug_assert_socket_nonblocking_(evutil_socket_t fd)
 {
-	int flags;
-
 	if (!event_debug_mode_on_)
 		return;
+	if (fd < 0)
+		return;
 
 #ifndef _WIN32
-	if ((flags = fcntl(fd, F_GETFL, NULL)) >= 0) {
-		EVUTIL_ASSERT(flags & O_NONBLOCK);
+	{
+		int flags;
+		if ((flags = fcntl(fd, F_GETFL, NULL)) >= 0) {
+			EVUTIL_ASSERT(flags & O_NONBLOCK);
+		}
 	}
-#else
-	(void)flags;
 #endif
 }
 #else