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diff --git a/assert/assert-perr.c b/assert/assert-perr.c
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+/* Copyright (C) 1994, 1995 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 Library General Public License as
+published by the Free Software Foundation; either version 2 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <assert.h>
+#include <stdio.h>
+#include <string.h>
+#include <sysdep.h>
+
+
+extern const char *__assert_program_name; /* In assert.c.  */
+
+/* This function, when passed an error number, a filename, and a line
+   number, prints a message on the standard error stream of the form:
+   	a.c:10: foobar: Unexpected error: Computer bought the farm
+   It then aborts program execution via a call to `abort'.  */
+
+#ifdef FATAL_PREPARE_INCLUDE
+#include FATAL_PREPARE_INCLUDE
+#endif
+
+void
+__assert_perror_fail (int errnum,
+		      const char *file, unsigned int line,
+		      const char *function)
+{
+#ifdef FATAL_PREPARE
+  FATAL_PREPARE;
+#endif
+
+  /* Print the message.  */
+  (void) fprintf (stderr, "%s%s%s:%u: %s%sUnexpected error: %s.\n",
+		  __assert_program_name ? __assert_program_name : "",
+		  __assert_program_name ? ": " : "",
+		  file, line,
+		  function ? function : "", function ? ": " : "",
+		  strerror (errnum));
+  (void) fflush (stderr);
+
+  abort ();
+}