diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog
index 2c59cd9f1..59c7ca1cb 100644
--- a/winsup/cygwin/ChangeLog
+++ b/winsup/cygwin/ChangeLog
@@ -1,3 +1,10 @@
+2015-09-23  Evgeny Grin  <k2k@yandex.ru>
+
+	* fhandler_socket.cc (fhandler_socket::wait_for_events): Fix compiler
+	warning in -O3 case.
+	(fhandler_socket::connect): Ditto.
+	* regex/regcomp.c (singleton): Ditto.
+
 2015-09-08  Corinna Vinschen  <corinna@vinschen.de>
 
 	* flock.cc (lockf_t::create_lock_obj_attr): Add buffer parameter.
diff --git a/winsup/cygwin/fhandler_socket.cc b/winsup/cygwin/fhandler_socket.cc
index ecb61983d..658dca74a 100644
--- a/winsup/cygwin/fhandler_socket.cc
+++ b/winsup/cygwin/fhandler_socket.cc
@@ -746,7 +746,7 @@ fhandler_socket::wait_for_events (const long event_mask, const DWORD flags)
     return 0;
 
   int ret;
-  long events;
+  long events = 0;
 
   while (!(ret = evaluate_events (event_mask, events, !(flags & MSG_PEEK)))
 	 && !events)
@@ -1160,7 +1160,7 @@ int
 fhandler_socket::connect (const struct sockaddr *name, int namelen)
 {
   struct sockaddr_storage sst;
-  int type;
+  int type = 0;
 
   if (get_inet_addr (name, namelen, &sst, &namelen, &type, connect_secret)
       == SOCKET_ERROR)
diff --git a/winsup/cygwin/regex/regcomp.c b/winsup/cygwin/regex/regcomp.c
index d68dcc32a..554b43ae3 100644
--- a/winsup/cygwin/regex/regcomp.c
+++ b/winsup/cygwin/regex/regcomp.c
@@ -1246,7 +1246,7 @@ freeset(struct parse *p, cset *cs)
 static wint_t
 singleton(cset *cs)
 {
-	wint_t i, s, n;
+	wint_t i, s = OUT, n;
 
 	for (i = n = 0; i < NC; i++)
 		if (CHIN(cs, i)) {