https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84578
Marek Polacek <mpolacek at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution|--- |FIXED Summary|[6/7/8 Regression] ICE with |[6/7 Regression] ICE with |flexible array member and |flexible array member and |constexpr |constexpr --- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> --- Fixed in GCC 8. The patch doesn't apply cleanly and it's ICE on kind-of invalid, so probably not going to backport.