[Bug c++/88820] ICE in in C++2a mode for code which is able to be compiled in C++17 mode

[hanicka at hanicka dot net]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88820

--- Comment #4 from Hana Dusíková <hanicka at hanicka dot net> ---
The ICE will not happen if you comment out line 464 from first example.