https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77792
--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> --- The minimal example from an SO answer: template<int> struct S { template<int> static void f(); S() { void(*g)(char) = [](auto) { f<0>; }; } }; S<0> s;