https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116731
--- Comment #7 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
For 13, we need this:
--- a/gcc/cp/parser.cc
+++ b/gcc/cp/parser.cc
@@ -13851,11 +13851,12 @@ warn_for_range_copy (tree decl, tree expr)
else if (!CP_TYPE_CONST_P (type))
return;
- /* Since small trivially copyable types are cheap to copy, we suppress the
- warning for them. 64B is a common size of a cache line. */
+ /* Since small trivially constructible types are cheap to construct, we
+ suppress the warning for them. 64B is a common size of a cache line. */
+ tree list = build_tree_list (NULL_TREE, TREE_TYPE (expr));
if (TREE_CODE (TYPE_SIZE_UNIT (type)) != INTEGER_CST
|| (tree_to_uhwi (TYPE_SIZE_UNIT (type)) <= 64
- && trivially_copyable_p (type)))
+ && is_trivially_xible (INIT_EXPR, type, list)))
return;
/* If we can initialize a reference directly, suggest that to avoid the
