diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index 73bf967bddf..c9ee1278a2a 100644
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,3 +1,7 @@
+2001-01-05  Nathan Sidwell  <nathan@codesourcery.com>
+
+	* cp-tree.def (DEFAULT_ARG): Make `x' class.
+
 2001-01-04  Joseph S. Myers  <jsm28@cam.ac.uk>
 
 	* decl.c (SIZE_TYPE, PTRDIFF_TYPE, WCHAR_TYPE): Don't define.
diff --git a/gcc/cp/cp-tree.def b/gcc/cp/cp-tree.def
index 07ec1eae629..3d514b518b6 100644
--- a/gcc/cp/cp-tree.def
+++ b/gcc/cp/cp-tree.def
@@ -2,7 +2,7 @@
    additional tree codes used in the GNU C++ compiler (see tree.def
    for the standard codes).
    Copyright (C) 1987, 1988, 1990, 1993, 1997, 1998,
-   1999, 2000 Free Software Foundation, Inc.
+   1999, 2000, 2001 Free Software Foundation, Inc.
    Hacked by Michael Tiemann (tiemann@cygnus.com)
 
 This file is part of GNU CC.
@@ -172,7 +172,7 @@ DEFTREECODE (TYPEOF_TYPE, "typeof_type", 't', 0)
 DEFTREECODE (USING_DECL, "using_decl", 'd', 0)
 
 /* An un-parsed default argument.  Looks like an IDENTIFIER_NODE.  */
-DEFTREECODE (DEFAULT_ARG, "default_arg", 'c', 2)
+DEFTREECODE (DEFAULT_ARG, "default_arg", 'x', 2)
 
 /* A template-id, like foo<int>.  The first operand is the template.
    The second is the TREE_LIST or TREE_VEC of explicitly specified