[Bug libstdc++/94033] is_trivially_copy_constructible<> fails with compiler error on complicated object with private default constructor

[rafael at espindo dot la]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94033

--- Comment #5 from Rafael Avila de Espindola <rafael at espindo dot la> ---
Created attachment 47994
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=47994&action=edit
reduced testcase

I have reduced it a bit further.