OpenSSL::PKCS12#initialize_copy

static VALUE
ossl_pkcs12_initialize_copy(VALUE self, VALUE other)
{
    PKCS12 *p12, *p12_old, *p12_new;

    rb_check_frozen(self);
    GetPKCS12(self, p12_old);
    GetPKCS12(other, p12);

    p12_new = ASN1_dup((i2d_of_void *)i2d_PKCS12, (d2i_of_void *)d2i_PKCS12, (char *)p12);
    if (!p12_new)
        ossl_raise(ePKCS12Error, "ASN1_dup");

    SetPKCS12(self, p12_new);
    PKCS12_free(p12_old);

    return self;
}