https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99546
--- Comment #12 from Andrew Pinski <pinskia at gcc dot gnu.org> --- (In reply to Andrew Pinski from comment #11) > (In reply to Jonathan Wakely from comment #5) > > (In reply to 康桓瑋 from comment #4) > > > same form, but this will trigger ICE: > > > > That's a completely different bug. I've opened PR 106976 > > Yes and no. > Valid code like this: > > ``` > struct S{ > constexpr static auto s = requires { []{}; }; > }; > > ``` > > Gets same ICE too. But I think it is the same issue overall. we are not parsing lambdas correctly at all.