https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118056
Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Summary|ICE with pack indexing with |ICE with pack indexing |index_sequence |inside a templated lamdba Last reconfirmed| |2024-12-17 Ever confirmed|0 |1 Status|UNCONFIRMED |NEW --- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Reduced down to just: ``` void operate_one(const int) {} template<typename ...T> void operate_multi(T... args) { [&]<int idx>() { ::operate_one(args...[idx]); }.template operator()<0>(); } int main() { ::operate_multi(0); } ``` The packed index is not being resolved it seems.