[Bug c++/125901] Lifting not-yet-instantiated std::vector template gives incorrect result for is_trivially_copyable_type

[mpolacek at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125901

--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Fixed on trunk.  Still undecided whether to backport.