(decl_attributes, case A_T_UNION): Don't look at fields of union if

there aren't any.

From-SVN: r12256

diff --git a/gcc/c-common.c b/gcc/c-common.c
index 04c1ef3522a3f09adbc52038a855f69ac2181122..c74a1a80d9ad41b3c13d545865b956258589ad5c 100644 (file)
--- a/gcc/c-common.c
+++ b/gcc/c-common.c
@@ -408,7 +408,8 @@ decl_attributes (node, attributes, prefix_attributes)
          if (is_type
              && TREE_CODE (type) == UNION_TYPE
              && (decl == 0
-                 || TYPE_MODE (type) == DECL_MODE (TYPE_FIELDS (type))))
+                 || (TYPE_FIELDS (type) != 0
+                     && TYPE_MODE (type) == DECL_MODE (TYPE_FIELDS (type)))))
            TYPE_TRANSPARENT_UNION (type) = 1;
          else if (decl != 0 && TREE_CODE (decl) == PARM_DECL
                   && TREE_CODE (type) == UNION_TYPE