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diff --git a/sysdeps/mach/hurd/bits/types/error_t.h b/sysdeps/mach/hurd/bits/types/error_t.h
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+/* Define error_t.
+   Copyright (C) 1991-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   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, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <bits/errno.h>
+
+/* User-visible type of error codes.  It is ok to use 'int' or
+   'kern_return_t' for these, but with 'error_t' the debugger prints
+   symbolic values.  */
+#ifndef __error_t_defined
+# define __error_t_defined 1
+
+typedef enum __error_t_codes error_t;
+
+#endif