* tree.h (is_lang_specific): Constify.

From-SVN: r222981

1 files changed, 1 insertions, 1 deletions

diff --git a/gcc/tree.h b/gcc/tree.h
index 1974186..f2424c6 100644
--- a/gcc/tree.h
+++ b/gcc/tree.h
@@ -4621,7 +4621,7 @@ more_call_expr_args_p (const call_expr_arg_iterator *iter)
 
 /* Return true if tree node T is a language-specific node.  */
 static inline bool
-is_lang_specific (tree t)
+is_lang_specific (const_tree t)
 {
   return TREE_CODE (t) == LANG_TYPE || TREE_CODE (t) >= NUM_TREE_CODES;
 }