[Bug c++/78345] [5/6/7 Regression] ICE on invalid c++ code on x86_64-linux-gnu (internal compiler error: in cxx_eval_outermost_constant_expr, at cp/constexpr.c:4464)

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78345

--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
r203985 is the first revision that accepts the #c4 testcase, r216750 is the
first revision that ICEs on it.