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diff --git a/nsprpub/pr/src/md/unix/aixwrap.c b/nsprpub/pr/src/md/unix/aixwrap.c
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/*
+ * File: aixwrap.c
+ * Description:
+ * This file contains a single function, _MD_SELECT(), which simply
+ * invokes the select() function. This file is used in an ugly
+ * hack to override the system select() function on AIX releases
+ * prior to 4.2. (On AIX 4.2, we use a different mechanism to
+ * override select().)
+ */
+
+#ifndef AIX_RENAME_SELECT
+#error aixwrap.c should only be used on AIX 3.2 or 4.1
+#else
+
+#include <sys/select.h>
+#include <sys/poll.h>
+
+int _MD_SELECT(int width, fd_set *r, fd_set *w, fd_set *e, struct timeval *t)
+{
+ return select(width, r, w, e, t);
+}
+
+int _MD_POLL(void *listptr, unsigned long nfds, long timeout)
+{
+ return poll(listptr, nfds, timeout);
+}
+
+#endif /* AIX_RENAME_SELECT */