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From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/108550] [10/11/12/13 Regression] the type 'const auto' of
 'constexpr' variable is not literal
Date: Tue, 21 Feb 2023 16:28:08 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D108550

--- Comment #8 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Potential fix:

--- a/gcc/cp/pt.cc
+++ b/gcc/cp/pt.cc
@@ -10355,6 +10355,7 @@ lookup_and_finish_template_variable (tree templ, tr=
ee
targs,
   if (TMPL_PARMS_DEPTH (DECL_TEMPLATE_PARMS (templ)) =3D=3D 1
       && !any_dependent_template_arguments_p (targs))
     {
+      complain &=3D ~tf_partial;
       var =3D finish_template_variable (var, complain);
       mark_used (var);
     }

but I need to think some more about it.=