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diff --git a/sysdeps/generic/shmat.c b/sysdeps/generic/shmat.c
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+/* Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, August 1995.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <sys/shm.h>
+#include <errno.h>
+
+/* Attach the shared memory segment associated with SHMID to the data
+ segment of the calling process. SHMADDR and SHMFLG determine how
+ and where the segment is attached. */
+
+void *
+shmat (shmid, shmaddr, shmflg)
+ int shmid;
+ const void *shmaddr;
+ int shmflg;
+{
+ __set_errno (ENOSYS);
+ return (void *) -1;
+}
+
+stub_warning (shmat)
+#include <stub-tag.h>