Fix FD_SET on INVALID_SOCKET in CSock::dataAvailable, undefined behav…

…iour
ryzom · Mar 3, 2023 · 0b0df0f · 0b0df0f
1 parent 406ddb4
commit 0b0df0f
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/nel/src/net/sock.cpp b/nel/src/net/sock.cpp
@@ -524,6 +524,9 @@ void CSock::connect(const CInetHost &addrs)
  */
 bool CSock::dataAvailable()
 {
+	if (_Sock == INVALID_SOCKET)
+		throw ESocket("CSock::dataAvailable(): invalid socket");
+
 	fd_set fdset;
 	FD_ZERO( &fdset );
 	FD_SET( _Sock, &fdset );