[Bug c++/70501] [6 Regression] internal compiler error: in verify_ctor_sanity, at cp/constexpr.c:2249

[nathan at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70501

--- Comment #3 from Nathan Sidwell <nathan at gcc dot gnu.org> ---
https://gcc.gnu.org/ml/gcc-patches/2016-04/msg00191.html

but read the thread for why that's not the best patch.  Continuing ...