-# stpncpy.m4 serial 6
+# stpncpy.m4 serial 7
dnl Copyright (C) 2002-2003, 2005-2007 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl Persuade glibc <string.h> to declare stpncpy().
AC_REQUIRE([AC_GNU_SOURCE])
+ dnl The stpncpy() declaration in lib/string_.h uses 'restrict'.
+ AC_REQUIRE([AC_C_RESTRICT])
+
AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS])
dnl Both glibc and AIX (4.3.3, 5.1) have an stpncpy() function