[Bug c++/124415] Brace-init of GNU vector type member rejected while other compilers accept it

[attackerj1113 at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=124415

--- Comment #1 from Jian Ma <attackerj1113 at gmail dot com> ---
Additionally, other extension types are accepted correctly, such as GNU complex
types and the __int128 extended integer type.