Passing a BigInt (mpz_t for GMP) array to C

General Usage
1

Lately, I’ve managed to pass a BigInt to C and back (Passing GMP variables from C(++) to Julia - #10 by Questioner). Now suppose I want to generate Fibonacci numbers in C and pass them to Julia. I thought I just take the analogous code for arrays

#include<gmp.h>

void test(mpz_t* var[]) {
	mpz_init_set_ui(*var[1], 2);
}

but upon calling it

@ccall "./art.so".test(x::Ptr{Ref{BigInt}})::Cvoid

where x was

 x
2-element Vector{Ref{BigInt}}:
 Base.RefValue{BigInt}(3)
 Base.RefValue{BigInt}(3)

it ran, but crashed upon typing “x” and hitting enter, producing a lengthy error message.

I’d be grateful for any input on how to solve this problem.