See also http://cplusplus.github.io/LWG/lwg-closed.html#930 (Access to std::array data as built-in array type) https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0635r0.pdf (Add c_array() member function to std::array) https://gist.github.com/Morwenn/e49214c196353c29555678b3470e6f13 (State of C arrays in C++)   -----Ursprüngliche Nachricht----- Von:Frederick Virchanza Gotham via Std-Proposals <std-proposals_at_[hidden]> Gesendet:Do 17.08.2023 22:21 Betreff:Re: [std-proposals] Only reason I don‘t use std::array An:std-proposals_at_[hidden]; CC:Frederick Virchanza Gotham <cauldwell.thomas_at_[hidden]>; On Thu, Aug 17, 2023 at 9:08 PM Lénárd Szolnoki wrote: > >   foo(a, pretend_is_std_array(a.arr)); // breaking the aliasing > assumption here I'll get to the point here: How about we explicitly write in the C++26 Standard that T[len] and array<T,len> are ABI-compatible, and also provide two functions:    stdarray_to_array    array_to_stdarray , both of which return a reference to an object that doesn't malfunction where you have anti-aliasing optimisations. -- Std-Proposals mailing list Std-Proposals_at_[hidden] https://lists.isocpp.org/mailman/listinfo.cgi/std-proposals