[Bug libstdc++/109536] Failure to compile constexpr std::vector with -D_GLIBCXX_DEBUG

[redi at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109536

--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Right - using std::vector in constant expressions isn't supported by debug
mode. Somebody needs to work on that.