copy
//0x38 bytes (sizeof)
struct _DIAGNOSTIC_CONTEXT
{
    enum _REQUESTER_TYPE CallerType;                                        //0x0
    union
    {
        struct
        {
            struct _EPROCESS* Process;                                      //0x8
            struct _UNICODE_STRING ProcessImageName;                        //0x10
            ULONG ProcessId;                                                //0x20
            ULONG SessionId;                                                //0x24
            ULONG ServiceTag;                                               //0x28
        };
        struct _DEVICE_OBJECT* DeviceObject;                                //0x8
    };
    ULONGLONG ReasonSize;                                                   //0x30
};