[Bug c++/79797] [5/6/7 Regression] ICE with NSDMI, this pointer and constexpr

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79797

--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Not sure about the validity but clang++ accepts the code.