[Bug c++/86301] g++ does not mark declarations used in non-dependent types as referenced

[zhonghao at pku dot org.cn]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86301

--- Comment #6 from zhonghao at pku dot org.cn ---
(In reply to Jonathan Wakely from comment #4)
> If you tried the latest g++ why are you reporting bugs for version 8.0.1?

My gcc is 8.0.1. Sorry for ignoring the fast releases of gcc.