How to ccall struct array from C?

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  unsafe_wrap(Array, pointer::Ptr{T}, dims; own = false)

  Wrap a Julia Array object around the data at the address given by pointer, without making a
  copy. The pointer element type T determines the array element type. dims is either an integer
  (for a 1d array) or a tuple of the array dimensions. own optionally specifies whether Julia
  should take ownership of the memory, calling free on the pointer when the array is no longer
  referenced.

  This function is labeled "unsafe" because it will crash if pointer is not a valid memory address
  to data of the requested length.
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