[Bug libstdc++/94033] [10 Regression] is_trivially_copy_constructible<> fails with compiler error on complicated object with private default constructor

[avi@cloudius-systems.com]

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

--- Comment #13 from Avi Kivity <avi@cloudius-systems.com> ---
Can you attach the patch here please?

I'd like to test that this is the only blocker for adopting gcc 10 for us, so
that we can adopt it as soon as it is released. I'm anxious to start using
coroutines.