https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96269
Ville Voutilainen <ville.voutilainen at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |ville.voutilainen at gmail dot com --- Comment #4 from Ville Voutilainen <ville.voutilainen at gmail dot com> --- Right; even gcc trunk is happy with that code in C++17 mode with both values of FLIP, it's the C++20 spaceship rules that cause trouble here.