https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116016
--- Comment #32 from Kees Cook <kees at outflux dot net> --- (In reply to qinzhao from comment #29) > (In reply to Jakub Jelinek from comment #28) > > Speaking of counted_by, I see support for it in c-family/ and c/, but not in > > cp/ at all, what is the attribute supposed to do in C++? > The initial plan is to support it in both C and C++ (since C++ can use > flexible array member too through GCC extension), but I didn't implement it > in C++ in the initial patch. > > If it isn't supported, it should be documented that it doesn't apply to C++ > > and should be rejected in C++. If it is to be supported, the support > > (including support for templates) needs to be there before GCC 15. > I will try to support it in C++ too in GCC15. If not, I will update the > documentation to indicate this limitation. FWIW, the Linux kernel only needs this for C (obviously), so if C++ support is at all a burden, my vote would to be having these features be C-only. (But from a completeness perspective, it would be nice to have it in C++ too.)
