I compiled the exact code in an empty Win32 Console project running Windows XP compiled 0 errors 0 warnings. Ran without error, the results were:


mypid: 880(lsass.exe), parentpid: 824(winlogon.exe)
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The only documentation on the structure I could find was

typedef enum _DEBUG_CONTROL_CODE {
DebugSysReadIoSpace = 14,
DebugSysWriteIoSpace = 15,
DebugSysReadMsr = 16,
DebugSysWriteMsr = 17,
DebugSysReadBusData = 18,
DebugSysWriteBusData = 19,
} DEBUG_CONTROL_CODE;

Perhaps its a windows xp/2000 difference