[Bug c++/65513] gcc stops with "internal compiler error"

[developm...@faf-ltd.com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65513

--- Comment #1 from Peter VARGA <developm...@faf-ltd.com> ---
One of these following steps do not produce any error message and the compiler
can finish successfully:
1) Add {} to the sDateTime member
2) Remove the std::atomic member