diff --git a/buffer.c b/buffer.c
index 19897296..38048d40 100644
--- a/buffer.c
+++ b/buffer.c
@@ -2382,6 +2382,9 @@ evbuffer_write_iovec(struct evbuffer *buffer, evutil_socket_t fd,
 		}
 		chain = chain->next;
 	}
+	if (! i)
+		return 0;
+
 #ifdef _WIN32
 	{
 		DWORD bytesSent;
diff --git a/evdns.c b/evdns.c
index ae86fe92..d32ea46c 100644
--- a/evdns.c
+++ b/evdns.c
@@ -2533,6 +2533,7 @@ evdns_base_nameserver_add(struct evdns_base *base, unsigned long int address)
 {
 	struct sockaddr_in sin;
 	int res;
+	memset(&sin, 0, sizeof(sin));
 	sin.sin_addr.s_addr = address;
 	sin.sin_port = htons(53);
 	sin.sin_family = AF_INET;
diff --git a/http.c b/http.c
index 7a460275..babcd2d7 100644
--- a/http.c
+++ b/http.c
@@ -3992,9 +3992,12 @@ bind_socket_ai(struct evutil_addrinfo *ai, int reuse)
 			return (-1);
 	}
 
-	setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, (void *)&on, sizeof(on));
-	if (reuse)
-		evutil_make_listen_socket_reuseable(fd);
+	if (setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, (void *)&on, sizeof(on))<0)
+		goto out;
+	if (reuse) {
+		if (evutil_make_listen_socket_reuseable(fd) < 0)
+			goto out;
+	}
 
 	if (ai != NULL) {
 		r = bind(fd, ai->ai_addr, (ev_socklen_t)ai->ai_addrlen);
diff --git a/listener.c b/listener.c
index 6e3594ac..a39c4dfc 100644
--- a/listener.c
+++ b/listener.c
@@ -227,9 +227,15 @@ evconnlistener_new_bind(struct event_base *base, evconnlistener_cb cb,
 	if (fd == -1)
 		return NULL;
 
-	setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, (void*)&on, sizeof(on));
+	if (setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, (void*)&on, sizeof(on))<0) {
+		evutil_closesocket(fd);
+		return NULL;
+	}
 	if (flags & LEV_OPT_REUSEABLE) {
-		evutil_make_listen_socket_reuseable(fd);
+		if (evutil_make_listen_socket_reuseable(fd) < 0) {
+			evutil_closesocket(fd);
+			return NULL;
+		}
 	}
 
 	if (flags & LEV_OPT_DEFERRED_ACCEPT) {
diff --git a/test/bench_cascade.c b/test/bench_cascade.c
index e9293228..3b8ea9c8 100644
--- a/test/bench_cascade.c
+++ b/test/bench_cascade.c
@@ -70,8 +70,10 @@ read_cb(evutil_socket_t fd, short which, void *arg)
 	long idx = (long) arg;
 
 	recv(fd, &ch, sizeof(ch), 0);
-	if (idx >= 0)
-		send(idx, "e", 1, 0);
+	if (idx >= 0) {
+		if (send(idx, "e", 1, 0) < 0)
+			perror("send");
+	}
 	fired++;
 }
 
@@ -112,7 +114,8 @@ run_once(int num_pipes)
 	fired = 0;
 
 	/* kick everything off with a single write */
-	send(pipes[1], "e", 1, 0);
+	if (send(pipes[1], "e", 1, 0) < 0)
+		perror("send");
 
 	event_dispatch();
 
diff --git a/test/bench_httpclient.c b/test/bench_httpclient.c
index c13ecb29..affd60d1 100644
--- a/test/bench_httpclient.c
+++ b/test/bench_httpclient.c
@@ -115,11 +115,12 @@ frob_socket(evutil_socket_t sock)
 {
 	struct linger l;
 	int one = 1;
-	setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (void*)&one, sizeof(one));
+	if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (void*)&one, sizeof(one))<0)
+		perror("setsockopt(SO_REUSEADDR)");
 	l.l_onoff = 1;
 	l.l_linger = 0;
 	if (setsockopt(sock, SOL_SOCKET, SO_LINGER, (void*)&l, sizeof(l))<0)
-		perror("setsockopt");
+		perror("setsockopt(SO_LINGER)");
 }
 
 static int
diff --git a/test/regress_dns.c b/test/regress_dns.c
index cfb32552..fb58a0be 100644
--- a/test/regress_dns.c
+++ b/test/regress_dns.c
@@ -1052,7 +1052,6 @@ test_bufferevent_connect_hostname(void *arg)
 	int expect_err5;
 	struct evdns_base *dns=NULL;
 	struct evdns_server_port *port=NULL;
-	evutil_socket_t server_fd=-1;
 	struct sockaddr_in sin;
 	int listener_port=-1;
 	ev_uint16_t dns_port=0;
@@ -1154,8 +1153,6 @@ test_bufferevent_connect_hostname(void *arg)
 end:
 	if (listener)
 		evconnlistener_free(listener);
-	if (server_fd>=0)
-		evutil_closesocket(server_fd);
 	if (port)
 		evdns_close_server_port(port);
 	if (dns)
diff --git a/test/regress_et.c b/test/regress_et.c
index 7f700cf3..cb3d1ceb 100644
--- a/test/regress_et.c
+++ b/test/regress_et.c
@@ -104,7 +104,7 @@ test_edgetriggered(void *et)
 
 	called = was_et = 0;
 
-	send(pair[0], test, (int)strlen(test)+1, 0);
+	tt_int_op(send(pair[0], test, (int)strlen(test)+1, 0), >, 0);
 	shutdown(pair[0], SHUT_WR);
 
 	/* Initalize the event library */
diff --git a/test/regress_listener.c b/test/regress_listener.c
index b2dd0435..4db102df 100644
--- a/test/regress_listener.c
+++ b/test/regress_listener.c
@@ -162,7 +162,7 @@ regress_listener_error(void *arg)
 	}
 
 	/* send, so that pair[0] will look 'readable'*/
-	send(data->pair[1], "hello", 5, 0);
+	tt_int_op(send(data->pair[1], "hello", 5, 0), >, 0);
 
 	/* Start a listener with a bogus socket. */
 	listener = evconnlistener_new(base, acceptcb, &count,
diff --git a/test/regress_ssl.c b/test/regress_ssl.c
index c0c20279..6c3489f1 100644
--- a/test/regress_ssl.c
+++ b/test/regress_ssl.c
@@ -108,7 +108,8 @@ getcert(void)
 
 	name = X509_NAME_new();
 	tt_assert(name);
-	tt_assert(NID_undef != (nid = OBJ_txt2nid("commonName")));
+	nid = OBJ_txt2nid("commonName");
+	tt_assert(NID_undef != nid);
 	tt_assert(0 != X509_NAME_add_entry_by_NID(
 		    name, nid, MBSTRING_ASC, (unsigned char*)"example.com",
 		    -1, -1, 0));
diff --git a/test/regress_testutils.c b/test/regress_testutils.c
index 340bf979..1f004603 100644
--- a/test/regress_testutils.c
+++ b/test/regress_testutils.c
@@ -178,12 +178,16 @@ regress_dns_server_cb(struct evdns_server_request *req, void *data)
 		return;
 	} else if (!strcmp(tab->anstype, "A")) {
 		struct in_addr in;
-		evutil_inet_pton(AF_INET, tab->ans, &in);
+		if (!evutil_inet_pton(AF_INET, tab->ans, &in)) {
+			TT_DIE(("Bad A value %s in table", tab->ans));
+		}
 		evdns_server_request_add_a_reply(req, question, 1, &in.s_addr,
 		    100);
 	} else if (!strcmp(tab->anstype, "AAAA")) {
 		struct in6_addr in6;
-		evutil_inet_pton(AF_INET6, tab->ans, &in6);
+		if (!evutil_inet_pton(AF_INET6, tab->ans, &in6)) {
+			TT_DIE(("Bad AAAA value %s in table", tab->ans));
+		}
 		evdns_server_request_add_aaaa_reply(req,
 		    question, 1, &in6.s6_addr, 100);
 	} else {
diff --git a/test/test-eof.c b/test/test-eof.c
index cad67460..9ac4f8d9 100644
--- a/test/test-eof.c
+++ b/test/test-eof.c
@@ -106,7 +106,8 @@ main(int argc, char **argv)
 		return (1);
 
 
-	send(pair[0], test, (int)strlen(test)+1, 0);
+	if (send(pair[0], test, (int)strlen(test)+1, 0) < 0)
+		return (1);
 	shutdown(pair[0], SHUT_WR);
 
 	/* Initalize the event library */