[Bug c++/87051] is_trivially_move_constructible wrongly gives `false` for class with user-provided non-const copy constructor

[ville.voutilainen at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87051

--- Comment #2 from Ville Voutilainen <ville.voutilainen at gmail dot com> ---
Patch available: https://gcc.gnu.org/ml/gcc-patches/2018-09/msg00670.html