Am 13.11.19 um 11:35 schrieb Jonathan Wakely: > On Wed, 13 Nov 2019 at 09:24, Klaus Doldinger > <klaus.doldinger64@xxxxxxxxx> wrote: >> >> Hi all, >> >> in the follwing example >> >> #include <compare> // omitting trigger ICE >> >> template<auto V> >> struct A {}; >> >> struct B { >> inline constexpr auto operator<=>(const B& rhs) const = default; >> private: >> int value; // why must this member be public? >> }; >> >> int main() { >> A<B{}> t; >> } >> >> why must the member value be public? > > Looks like a bug, please report it to bugzilla. Done. > >> Side note: if I omit #include <compare> it triggers an ICE. > > And please report that to bugzilla too, as a second bug. > Done.