I have just found you implemented constexpr placement new https://github.com/gcc-mirror/gcc/commit/afa3a4a52cf91485477e4aaa5f05987ec7ff869d https://godbolt.org/z/h7WETe5M3 Hi Jakub. I try to allocate memory with operator in constexpr context but it does not seem the C++ standard allows it. However, std::allocator is not freestanding based on C++ standard. Is that a standard defect? I think void* operator new ( std::size_t<http://en.cppreference.com/w/cpp/types/size_t> count ); and void operator delete ( void* ptr ) noexcept; should also be constexpr to allow custom allocators to work in constexpr context. If it is a defect, could you report it to wg21? Thank you
