[Bug plugins/86441] instantiate_class_template() unable to re-execute constexpr function

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86441

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
is your plugin called before *free_lang_data pass is happening?
Because if it is not, then most if not all of the front-end specific data has
been removed from the types which is why you might be getting a crash.