https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94033
--- Comment #2 from Avi Kivity <a...@cloudius-systems.com> --- It does not look similar to 93923. There, there is an incomplete type. In my reproducer the type is complete but the default constructor is private. Note that for simple cases is_trivially_constructible works (and evaluates to false), both in gcc 9 and gcc 10. It is only in a few cases that it starts to fail. The errors are also very different from 93983.
