diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 6031eee9398..33be083356c 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2004-07-07  Alexandre Oliva  <aoliva@redhat.com>
+
+	* function.c (assign_parm_find_data_types): Call
+	FUNCTION_ARG_PASS_BY_REFERENCE only if it's defined.
+
 2004-07-07  Steven Bosscher  <stevenb@suse.de>
 
 	* tree-cfg.c (group_case_labels): Remove case labels that have
diff --git a/gcc/function.c b/gcc/function.c
index bb2afd918f3..67784652b53 100644
--- a/gcc/function.c
+++ b/gcc/function.c
@@ -2246,8 +2246,11 @@ assign_parm_find_data_types (struct assign_parm_data_all *all, tree parm,
      the machine requires these objects be passed that way.  */
   if (CONTAINS_PLACEHOLDER_P (TYPE_SIZE (passed_type))
       || TREE_ADDRESSABLE (passed_type)
+#ifdef FUNCTION_ARG_PASS_BY_REFERENCE
       || FUNCTION_ARG_PASS_BY_REFERENCE (all->args_so_far, passed_mode,
-					 passed_type, data->named_arg))
+					 passed_type, data->named_arg)
+#endif
+      )
     {
       passed_type = nominal_type = build_pointer_type (passed_type);
       data->passed_pointer = true;