* class.c (base_derived_from): Make sure return value is a bool.

From-SVN: r58290

gcc/cp/ChangeLog

 2002-10-18  Mark Mitchell  <mark@codesourcery.com>
 
+	* class.c (base_derived_from): Make sure return value is a bool.
+
+2002-10-18  Mark Mitchell  <mark@codesourcery.com>
+
 	* class.c (find_final_overrider_data_s): Remove overriding_fn and
 	overriding_base.
 	(dfs_base_derived_from): New function.

gcc/cp/class.c

@@ -2225,7 +2225,7 @@ dfs_base_derived_from (tree binfo, void *data)
 static bool
 base_derived_from (tree derived, tree base)
 {
-  return dfs_walk (derived, dfs_base_derived_from, NULL, base);
+  return dfs_walk (derived, dfs_base_derived_from, NULL, base) != NULL_TREE;
 }
 
 typedef struct find_final_overrider_data_s {