// wdm.h
typedef struct _IO_STATUS_BLOCK64 {
union {
NTSTATUS Status;
PVOID64 Pointer;
} DUMMYUNIONNAME;
ULONG64 Information;
} IO_STATUS_BLOCK64;
View the official Windows Driver Kit DDI referenceNo description available.
DUMMYUNIONNAMEDUMMYUNIONNAME.StatusDUMMYUNIONNAME.PointerInformation