[Bug libstdc++/68989] Core issue 1992 will make catching bad_new_array_length unnecessary in _M_grow_words

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68989

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
http://www.open-std.org/jtc1/sc22/wg21/docs/cwg_defects.html#1992 is in C++17,
what's the status of the front end?