Index: rostests/apitests/ws2_32/send.c
===================================================================
--- rostests/apitests/ws2_32/send.c	(revision 72764)
+++ rostests/apitests/ws2_32/send.c	(working copy)
@@ -148,6 +148,12 @@
     ok(ret == SOCKET_ERROR, "sendto returned %d\n", ret);
     ok(error == WSAENOTSOCK, "error = %d\n", error);
 
+    /* test INVALID_SOCKET */
+    ret = sendto(INVALID_SOCKET, buffer, bufferSize, 0, (const struct sockaddr *)&addr, sizeof(addr));
+    error = WSAGetLastError();
+    ok(ret == SOCKET_ERROR, "sendto returned %d\n", ret);
+    ok(error == WSAENOTSOCK, "error = %d\n", error);
+
     sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
     ok(sock != INVALID_SOCKET, "socket failed\n");
     if (sock == INVALID_SOCKET)