The GCC developers are proud to announce a new major GCC release, 13.1.
by Richard Biener
From the announcement:
The C frontend got support for several C23 features, the C++ frontend for C++23 features. The C++ standard library experimental support for C++20 and C++23 was enhanced. For the C family of languages you can now use -fstrict-flex-arrays[=level] to control the behavior for the various legacy forms of specifying flexible array members.