c++1z - alloca() with VLAs and C++ -

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the alloca() replacement c++ have found on internet looks this:

template <typename f> void alloca_(::std::size_t const n, f&& f) noexcept(noexcept(f({}))) {   alignas(::std::max_align_t) char p[n];    f(p); }

but, obviously, not alloca() know , love, not function, nor macro. can alloca() implementation resembles alloca() function call semantics more closely, written? perhaps macro? whether macro or function, should allocate space stack, not heap.


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