1 files changed, 5 insertions, 1 deletions
diff --git a/gcc/tree.c b/gcc/tree.c
index efccfb1..f4e53ef 100644
--- a/gcc/tree.c
+++ b/gcc/tree.c
@@ -5158,7 +5158,11 @@ build_array_type (tree elt_type, tree index_type)
   
   if (index_type == 0)
     {
-      layout_type (t);
+      tree save = t;
+      hashcode = iterative_hash_object (TYPE_HASH (elt_type), hashcode);
+      t = type_hash_canon (hashcode, t);
+      if (save == t)
+	layout_type (t);
       return t;
     }