https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99895
Patrick Palka <ppalka at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Assignee|unassigned at gcc dot gnu.org |ppalka at gcc dot gnu.org Status|UNCONFIRMED |ASSIGNED CC| |ppalka at gcc dot gnu.org Ever confirmed|0 |1 Last reconfirmed| |2021-05-27 --- Comment #1 from Patrick Palka <ppalka at gcc dot gnu.org> --- Confirmed. Reduced: struct fixed_string { consteval auto size() const { return 42; } }; template<fixed_string s> static void VerifyHash() { [](auto){ s.size(); }; } void foo() { VerifyHash<{}>(); } Declaring size() constexpr instead of consteval makes us accept.