static unsafe void PointersAsArgsTest(int *ip, int **ipp, int *[] ipa, int **[] ippa,
DateTime *dtp, DateTime **dtpp, DateTime *[] dtpa, DateTime **[] dtppa)
{
Console.WriteLine($"break here!");
if (ip == null)
{
Console.WriteLine($"ip is null");
}
Console.WriteLine($"done!");
}
public static unsafe void LocalPointers()
{
int ivalue0 = 5;
int ivalue1 = 10;
int * ip = &ivalue0;
int * ip_null = null;
int **ipp = &ip;
int **ipp_null = &ip_null;
int *[] ipa = new int *[] {&ivalue0, &ivalue1, null };
int **[] ippa = new int **[] {&ip, &ip_null, ipp, ipp_null, null };
char cvalue0 = 'q';
char * cp = &cvalue0;
DateTime dt = new DateTime(5, 6, 7, 8, 9, 10);
void * vp = &dt;
void * vp_null = null;
void ** vpp = &vp;
void ** vpp_null = &vp_null;
DateTime * dtp = &dt;
DateTime * dtp_null = null;
DateTime *[] dtpa = new DateTime *[] { dtp, dtp_null };
DateTime **[] dtppa = new DateTime * *[] {&dtp, &dtp_null, null };
Console.WriteLine($"-- break here: ip_null==null: {ip_null == null}, ipp_null: {ipp_null == null}, *ipp_null==ip_null: {*ipp_null == ip_null}, *ipp_null==null: {*ipp_null == null}");
var gs = new GenericStructWithUnmanagedT <DateTime> {
Value = new DateTime(1, 2, 3, 4, 5, 6), IntField = 4, DTPP = &dtp
};
var gs_null = new GenericStructWithUnmanagedT <DateTime> {
Value = new DateTime(1, 2, 3, 4, 5, 6), IntField = 4, DTPP = &dtp_null
};
var gsp = &gs;
var gsp_null = &gs_null;
var gspa = new GenericStructWithUnmanagedT <DateTime> *[] { null, gsp, gsp_null };
var cwp = new GenericClassWithPointers <DateTime> {
Ptr = dtp
};
var cwp_null = new GenericClassWithPointers <DateTime>();
Console.WriteLine($"{(int)*ip}, {(int)**ipp}, {ipp_null == null}, {ip_null == null}, {ippa == null}, {ipa}, {(char)*cp}, {(vp == null ? "null" : "not null")}, {dtp->Second}, {gsp->IntField}, {cwp}, {cwp_null}, {gs_null}");
PointersAsArgsTest(ip, ipp, ipa, ippa, &dt, &dtp, dtpa, dtppa);
}
