[Bug c++/69098] [6 regression] Member function pointer template flagged with 'is not a function template'

[ppalka at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69098

--- Comment #6 from Patrick Palka <ppalka at gcc dot gnu.org> ---
This fixes it:

diff --git a/gcc/cp/pt.c b/gcc/cp/pt.c
index ef79b59..264c8aa 100644
--- a/gcc/cp/pt.c
+++ b/gcc/cp/pt.c
@@ -13735,7 +13735,19 @@ tsubst_qualified_id (tree qualified_id, tree args,
     }

   if (is_template)
-    expr = lookup_template_function (expr, template_args);
+    {
+      if (variable_template_p (expr))
+       {
+         expr = lookup_template_variable (expr, template_args);
+         if (!any_dependent_template_arguments_p (template_args))
+           {
+             expr = finish_template_variable (expr, complain);
+             mark_used (expr);
+           }
+       }
+      else
+       expr = lookup_template_function (expr, template_args);
+    }

   if (expr == error_mark_node && complain & tf_error)
     qualified_name_lookup_error (scope, TREE_OPERAND (qualified_id, 1),