https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109536
Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |jakub at gcc dot gnu.org --- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> --- 12-5187-g1ae8edf5f73ca5c3 acknowledged that: libstdc++: Implement constexpr std::vector for C++20 This implements P1004R2 ("Making std::vector constexpr") for C++20. For now, debug mode vectors are not supported in constant expressions. To make that work we might need to disable all attaching/detaching of safe iterators. That can be fixed later.