[Bug c++/105626] -Wformat should accept u8"" strings

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105626

Marek Polacek <mpolacek at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |mpolacek at gcc dot gnu.org

--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Possible fix:

--- a/gcc/c-family/c-format.cc
+++ b/gcc/c-family/c-format.cc
@@ -1742,7 +1742,8 @@ check_format_arg (void *ctx, tree format_tree,
     }
   tree underlying_type
     = TYPE_MAIN_VARIANT (TREE_TYPE (TREE_TYPE (format_tree)));
-  if (underlying_type != char_type_node)
+  if (underlying_type != char_type_node
+      && !(flag_char8_t && underlying_type == char8_type_node))
     {
       if (underlying_type == char16_type_node
      || underlying_type == char32_type_node