diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 7d06b18f6d5..bae5c56bccf 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2000-11-07  Joseph S. Myers  <jsm28@cam.ac.uk>
+
+	* tree.c (build_common_tree_nodes_2): Make va_list_type_node be a
+	copy of ptr_type_node rather than ptr_type_node itself.
+
 Tue Nov  7 06:29:24 2000  J"orn Rennecke <amylaar@redhat.com>
 
 	* combine.c (recog_for_combine): Allocate uninitialized vector with
diff --git a/gcc/tree.c b/gcc/tree.c
index c765dae5a88..556a0631eb0 100644
--- a/gcc/tree.c
+++ b/gcc/tree.c
@@ -4946,7 +4946,7 @@ build_common_tree_nodes_2 (short_double)
 #ifdef BUILD_VA_LIST_TYPE
   BUILD_VA_LIST_TYPE (va_list_type_node);
 #else
-  va_list_type_node = ptr_type_node;
+  va_list_type_node = build_type_copy (ptr_type_node);
 #endif
 
   V4SF_type_node = make_node (VECTOR_TYPE);