Method allocate

test/stdexec/detail/test_any.cpp:45–50

    {}

    [[nodiscard]]
    constexpr _Value *allocate(std::size_t n)
    {
      bytes_ += n * sizeof(_Value);
      return static_cast<_Value *>(::operator new(n * sizeof(_Value)));
    }

    constexpr void deallocate(_Value *ptr, std::size_t n) noexcept
    {