bug in mpz_init

[Michael de Mare]

I initialize three seperate variables separately:

        mpz_init(X1);
        mpz_init(X2);
        mpz_init(J);
        mpz_init(T);

after initialization, the variables all point to the same data:

4: T = {{_mp_alloc = 1, _mp_size = 0, _mp_d = 0x804b6d0}}
3: X2 = {{_mp_alloc = 1, _mp_size = 0, _mp_d = 0x804b6d0}}
2: X1 = {{_mp_alloc = 1, _mp_size = 0, _mp_d = 0x804b6d0}}
1: X0 = {{_mp_alloc = 1, _mp_size = -1, _mp_d = 0x804b6e0}}

so, when I change the value of X2, X1 and T get changed too:

        mpz_set_ui(J, 1l);
        member(X1, D, X0, J, S);
        mpz_set(T, X1);
#ifdef DEBUG
        fprintf(stderr, "\nX1=");
        mpz_out_str(stderr, 10, X1);
        fprintf(stderr,"\nT=");
        mpz_out_str(stderr, 10, T);
        fprintf(stderr,"\n");
#endif
        mpz_set_ui(J, 2l);
        member(X2, D, X0, J, S);
#ifdef DEBUG
        fprintf(stderr, "\nX0=");
        mpz_out_str(stderr, 10, X0);
        fprintf(stderr, "\nX1=");
        mpz_out_str(stderr, 10, X1);
        fprintf(stderr,"\nT=");
        mpz_out_str(stderr, 10, T);
        fprintf(stderr, "\nX2=");
        mpz_out_str(stderr, 10, X2);
        fprintf(stderr, "\n");
#endif

X1=2
T=2

X0=-1
X1=4
T=4
X2=4

-Mike