https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77562
--- Comment #6 from programmerjake at gmail dot com --- (In reply to Andrew Pinski from comment #5) > Note I suspect this is due to "long a = 1;" being treated as a constexpr > something like that now. it is. In the original code I had, S has a constexpr default constructor.
