[Bug c++/105398] [11/12 Regression][ICE] enum in array in lambda

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105398

--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
The patch above changed

-      if (TREE_CODE (template_type) == ENUMERAL_TYPE && !is_dependent_type
+      if (TREE_CODE (template_type) == ENUMERAL_TYPE
+         && !uses_template_parms (current_nonlambda_scope ())
          && !DECL_ALIAS_TEMPLATE_P (gen_tmpl))

but here current_nonlambda_scope () is ::, a NAMESPACE_DECL, which doesn't have
a type, so is considered type-dependent.  So we don't call tsubst_enum.  That
doesn't look right.