Binary compatibility report for the dnsapi.dll library between 6.0.6000.16386-Windows SDK 6.0 and 6.1.7600.16385-Windows SDK 7.1 versions on x86

Test Info

Library Name	dnsapi.dll
Version #1	6.0.6000.16386-Windows SDK 6.0
Version #2	6.1.7600.16385-Windows SDK 7.1
CPU Architecture	x86

Test Results

Total Header Files	1
Total Dynamic Libraries	1
Total Symbols / Types	28 / 85
Verdict	Incompatible (64.29%)

Problem Summary

	Severity	Count
Added Symbols	-	2
Removed Symbols	High	0
Problems with Data Types	High	0
	Medium	16
	Low	13
Problems with Symbols	High	0
	Medium	0
	Low	0
Problems with Constants	Low	1

Added Symbols (2)

windns.h, dnsapi.dll
DnsFreeProxyName ( PWSTR proxyName )
DnsGetProxyInformation ( PCWSTR hostName, DNS_PROXY_INFORMATION* proxyInformation, DNS_PROXY_INFORMATION* defaultProxyInformation, DNS_PROXY_COMPLETION_ROUTINE completionRoutine, void* completionContext )

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Problems with Data Types, Medium Severity (16)

	Change	Effect
1	Size of field Reserved has been changed from 3 bits to 1 bit.	Previous accesses of applications and library functions to the fields at higher positions of the structure definition may be broken.
2	Field AuthenticatedData has been added at the middle position of this structural type.	Layout of structure fields has been changed and therefore fields at higher positions of the structure definition may be incorrectly accessed by applications.
3	Field CheckingDisabled has been added at the middle position of this structural type.	Layout of structure fields has been changed and therefore fields at higher positions of the structure definition may be incorrectly accessed by applications.

windns.h
[+] struct _DNS_HEADER (3)
[+] struct DNS_KEY_DATA (2)

	Change	Effect
1	Field wKeyLength has been added at the middle position of this structural type.	1) Size of the inclusive type has been changed. 2) Layout of structure fields has been changed and therefore fields at higher positions of the structure definition may be incorrectly accessed by applications.
2	Field wPad has been added at the middle position of this structural type.	1) Size of the inclusive type has been changed. 2) Layout of structure fields has been changed and therefore fields at higher positions of the structure definition may be incorrectly accessed by applications.

[+] affected symbols (16)

DnsExtractRecordsFromMessage_UTF8 ( PDNS_MESSAGE_BUFFER pDnsBuffer, WORD wMessageLength, PDNS_RECORD* ppRecord )

Field 'ppRecord−>Data−>Key' in 3rd parameter 'ppRecord' (pointer) has type 'DNS_KEY_DATA'.

DnsExtractRecordsFromMessage_W ( PDNS_MESSAGE_BUFFER pDnsBuffer, WORD wMessageLength, PDNS_RECORD* ppRecord )

Field 'ppRecord−>Data−>Key' in 3rd parameter 'ppRecord' (pointer) has type 'DNS_KEY_DATA'.

DnsModifyRecordsInSet_A ( PDNS_RECORD pAddRecords, PDNS_RECORD pDeleteRecords, DWORD Options, HANDLE hCredentials, PVOID pExtraList, PVOID pReserved )

Field 'pAddRecords−>Data−>Key' in 1st parameter 'pAddRecords' (pointer) has type 'DNS_KEY_DATA'.

DnsModifyRecordsInSet_UTF8 ( PDNS_RECORD pAddRecords, PDNS_RECORD pDeleteRecords, DWORD Options, HANDLE hCredentials, PVOID pExtraList, PVOID pReserved )

Field 'pAddRecords−>Data−>Key' in 1st parameter 'pAddRecords' (pointer) has type 'DNS_KEY_DATA'.

DnsModifyRecordsInSet_W ( PDNS_RECORD pAddRecords, PDNS_RECORD pDeleteRecords, DWORD Options, HANDLE hCredentials, PVOID pExtraList, PVOID pReserved )

Field 'pAddRecords−>Data−>Key' in 1st parameter 'pAddRecords' (pointer) has type 'DNS_KEY_DATA'.

DnsQuery_A ( PCSTR pszName, WORD wType, DWORD Options, PVOID pExtra, PDNS_RECORD* ppQueryResults, PVOID* pReserved )

Field 'ppQueryResults−>Data−>KEY' in 5th parameter 'ppQueryResults' (pointer) has type 'DNS_KEY_DATA'.

DnsQuery_UTF8 ( PCSTR pszName, WORD wType, DWORD Options, PVOID pExtra, PDNS_RECORD* ppQueryResults, PVOID* pReserved )

Field 'ppQueryResults−>Data−>KEY' in 5th parameter 'ppQueryResults' (pointer) has type 'DNS_KEY_DATA'.

DnsQuery_W ( PCWSTR pszName, WORD wType, DWORD Options, PVOID pExtra, PDNS_RECORD* ppQueryResults, PVOID* pReserved )

Field 'ppQueryResults−>Data−>KEY' in 5th parameter 'ppQueryResults' (pointer) has type 'DNS_KEY_DATA'.

DnsRecordCompare ( PDNS_RECORD pRecord1, PDNS_RECORD pRecord2 )

Field 'pRecord2−>Data−>KEY' in 2nd parameter 'pRecord2' (pointer) has type 'DNS_KEY_DATA'.

DnsRecordCopyEx ( PDNS_RECORD pRecord, DNS_CHARSET CharSetIn, DNS_CHARSET CharSetOut )

Field 'pRecord−>Data−>KEY' in 1st parameter 'pRecord' (pointer) has type 'DNS_KEY_DATA'.

DnsRecordSetCompare ( PDNS_RECORD pRR1, PDNS_RECORD pRR2, PDNS_RECORD* ppDiff1, PDNS_RECORD* ppDiff2 )

Field 'pRR1−>Data−>KEY' in 1st parameter 'pRR1' (pointer) has type 'DNS_KEY_DATA'.

DnsRecordSetCopyEx ( PDNS_RECORD pRecordSet, DNS_CHARSET CharSetIn, DNS_CHARSET CharSetOut )

Field 'pRecordSet−>Data−>KEY' in 1st parameter 'pRecordSet' (pointer) has type 'DNS_KEY_DATA'.

DnsRecordSetDetach ( PDNS_RECORD pRecordList )

Field 'pRecordList−>Data−>KEY' in 1st parameter 'pRecordList' (pointer) has type 'DNS_KEY_DATA'.

DnsReplaceRecordSetA ( PDNS_RECORD pReplaceSet, DWORD Options, HANDLE hContext, PVOID pExtraInfo, PVOID pReserved )

Field 'pReplaceSet−>Data−>Key' in 1st parameter 'pReplaceSet' (pointer) has type 'DNS_KEY_DATA'.

DnsReplaceRecordSetUTF8 ( PDNS_RECORD pReplaceSet, DWORD Options, HANDLE hContext, PVOID pExtraInfo, PVOID pReserved )

Field 'pReplaceSet−>Data−>Key' in 1st parameter 'pReplaceSet' (pointer) has type 'DNS_KEY_DATA'.

DnsReplaceRecordSetW ( PDNS_RECORD pReplaceSet, DWORD Options, HANDLE hContext, PVOID pExtraInfo, PVOID pReserved )

Field 'pReplaceSet−>Data−>Key' in 1st parameter 'pReplaceSet' (pointer) has type 'DNS_KEY_DATA'.

[+] struct DNS_SIG_DATAA (9)

	Change	Effect
1	The relative position of field chAlgorithm has been changed from 2 to 1.	Applications will access incorrect memory when attempting to access this field.
2	The relative position of field chLabelCount has been changed from 3 to 2.	Applications will access incorrect memory when attempting to access this field.
3	The relative position of field dwExpiration has been changed from 5 to 4.	Applications will access incorrect memory when attempting to access this field.
4	The relative position of field dwOriginalTtl has been changed from 4 to 3.	Applications will access incorrect memory when attempting to access this field.
5	The relative position of field dwTimeSigned has been changed from 6 to 5.	Applications will access incorrect memory when attempting to access this field.
6	The relative position of field pNameSigner has been changed from 0 to 7.	Applications will access incorrect memory when attempting to access this field.
7	The relative position of field wKeyTag has been changed from 7 to 6.	Applications will access incorrect memory when attempting to access this field.
8	The relative position of field wTypeCovered has been changed from 1 to 0.	Applications will access incorrect memory when attempting to access this field.
9	Field Pad has been removed from this type.	Applications will access incorrect memory when attempting to access this field.

[+] affected symbols (16)

DnsExtractRecordsFromMessage_UTF8 ( PDNS_MESSAGE_BUFFER pDnsBuffer, WORD wMessageLength, PDNS_RECORD* ppRecord )

Field 'ppRecord−>Data−>SIG' in 3rd parameter 'ppRecord' (pointer) has type 'DNS_SIG_DATAA'.

DnsExtractRecordsFromMessage_W ( PDNS_MESSAGE_BUFFER pDnsBuffer, WORD wMessageLength, PDNS_RECORD* ppRecord )

Field 'ppRecord−>Data−>SIG' in 3rd parameter 'ppRecord' (pointer) has type 'DNS_SIG_DATAA'.

DnsModifyRecordsInSet_A ( PDNS_RECORD pAddRecords, PDNS_RECORD pDeleteRecords, DWORD Options, HANDLE hCredentials, PVOID pExtraList, PVOID pReserved )

Field 'pDeleteRecords−>Data−>SIG' in 2nd parameter 'pDeleteRecords' (pointer) has type 'DNS_SIG_DATAA'.

DnsModifyRecordsInSet_UTF8 ( PDNS_RECORD pAddRecords, PDNS_RECORD pDeleteRecords, DWORD Options, HANDLE hCredentials, PVOID pExtraList, PVOID pReserved )

Field 'pDeleteRecords−>Data−>SIG' in 2nd parameter 'pDeleteRecords' (pointer) has type 'DNS_SIG_DATAA'.

DnsModifyRecordsInSet_W ( PDNS_RECORD pAddRecords, PDNS_RECORD pDeleteRecords, DWORD Options, HANDLE hCredentials, PVOID pExtraList, PVOID pReserved )

Field 'pDeleteRecords−>Data−>SIG' in 2nd parameter 'pDeleteRecords' (pointer) has type 'DNS_SIG_DATAA'.

DnsQuery_A ( PCSTR pszName, WORD wType, DWORD Options, PVOID pExtra, PDNS_RECORD* ppQueryResults, PVOID* pReserved )

Field 'ppQueryResults−>Data−>Sig' in 5th parameter 'ppQueryResults' (pointer) has type 'DNS_SIG_DATAA'.

DnsQuery_UTF8 ( PCSTR pszName, WORD wType, DWORD Options, PVOID pExtra, PDNS_RECORD* ppQueryResults, PVOID* pReserved )

Field 'ppQueryResults−>Data−>Sig' in 5th parameter 'ppQueryResults' (pointer) has type 'DNS_SIG_DATAA'.

DnsQuery_W ( PCWSTR pszName, WORD wType, DWORD Options, PVOID pExtra, PDNS_RECORD* ppQueryResults, PVOID* pReserved )

Field 'ppQueryResults−>Data−>Sig' in 5th parameter 'ppQueryResults' (pointer) has type 'DNS_SIG_DATAA'.

DnsRecordCompare ( PDNS_RECORD pRecord1, PDNS_RECORD pRecord2 )

Field 'pRecord2−>Data−>SIG' in 2nd parameter 'pRecord2' (pointer) has type 'DNS_SIG_DATAA'.

DnsRecordCopyEx ( PDNS_RECORD pRecord, DNS_CHARSET CharSetIn, DNS_CHARSET CharSetOut )

Field 'pRecord−>Data−>Sig' in 1st parameter 'pRecord' (pointer) has type 'DNS_SIG_DATAA'.

DnsRecordSetCompare ( PDNS_RECORD pRR1, PDNS_RECORD pRR2, PDNS_RECORD* ppDiff1, PDNS_RECORD* ppDiff2 )

Field 'ppDiff2−>Data−>Sig' in 4th parameter 'ppDiff2' (pointer) has type 'DNS_SIG_DATAA'.

DnsRecordSetCopyEx ( PDNS_RECORD pRecordSet, DNS_CHARSET CharSetIn, DNS_CHARSET CharSetOut )

Field 'pRecordSet−>Data−>Sig' in 1st parameter 'pRecordSet' (pointer) has type 'DNS_SIG_DATAA'.

DnsRecordSetDetach ( PDNS_RECORD pRecordList )

Field 'pRecordList−>Data−>SIG' in 1st parameter 'pRecordList' (pointer) has type 'DNS_SIG_DATAA'.

DnsReplaceRecordSetA ( PDNS_RECORD pReplaceSet, DWORD Options, HANDLE hContext, PVOID pExtraInfo, PVOID pReserved )

Field 'pReplaceSet−>Data−>SIG' in 1st parameter 'pReplaceSet' (pointer) has type 'DNS_SIG_DATAA'.

DnsReplaceRecordSetUTF8 ( PDNS_RECORD pReplaceSet, DWORD Options, HANDLE hContext, PVOID pExtraInfo, PVOID pReserved )

Field 'pReplaceSet−>Data−>SIG' in 1st parameter 'pReplaceSet' (pointer) has type 'DNS_SIG_DATAA'.

DnsReplaceRecordSetW ( PDNS_RECORD pReplaceSet, DWORD Options, HANDLE hContext, PVOID pExtraInfo, PVOID pReserved )

Field 'pReplaceSet−>Data−>SIG' in 1st parameter 'pReplaceSet' (pointer) has type 'DNS_SIG_DATAA'.

[+] union anon-union-windns.h-1396 (2)

	Change	Effect
1	Size of field KEY has been changed from 6 bytes to 10 bytes.	Previous accesses of applications and library functions to this field and fields at higher positions of the structure definition may be broken.
2	Size of field Key has been changed from 6 bytes to 10 bytes.	Previous accesses of applications and library functions to this field and fields at higher positions of the structure definition may be broken.

[+] affected symbols (16)

DnsExtractRecordsFromMessage_UTF8 ( PDNS_MESSAGE_BUFFER pDnsBuffer, WORD wMessageLength, PDNS_RECORD* ppRecord )

Field 'ppRecord−>Data' in 3rd parameter 'ppRecord' (pointer) has type 'anon-union-windns.h-1396'.

DnsExtractRecordsFromMessage_W ( PDNS_MESSAGE_BUFFER pDnsBuffer, WORD wMessageLength, PDNS_RECORD* ppRecord )

Field 'ppRecord−>Data' in 3rd parameter 'ppRecord' (pointer) has type 'anon-union-windns.h-1396'.

DnsModifyRecordsInSet_A ( PDNS_RECORD pAddRecords, PDNS_RECORD pDeleteRecords, DWORD Options, HANDLE hCredentials, PVOID pExtraList, PVOID pReserved )

Field 'pAddRecords−>Data' in 1st parameter 'pAddRecords' (pointer) has type 'anon-union-windns.h-1396'.

DnsModifyRecordsInSet_UTF8 ( PDNS_RECORD pAddRecords, PDNS_RECORD pDeleteRecords, DWORD Options, HANDLE hCredentials, PVOID pExtraList, PVOID pReserved )

Field 'pAddRecords−>Data' in 1st parameter 'pAddRecords' (pointer) has type 'anon-union-windns.h-1396'.

DnsModifyRecordsInSet_W ( PDNS_RECORD pAddRecords, PDNS_RECORD pDeleteRecords, DWORD Options, HANDLE hCredentials, PVOID pExtraList, PVOID pReserved )

Field 'pAddRecords−>Data' in 1st parameter 'pAddRecords' (pointer) has type 'anon-union-windns.h-1396'.

DnsQuery_A ( PCSTR pszName, WORD wType, DWORD Options, PVOID pExtra, PDNS_RECORD* ppQueryResults, PVOID* pReserved )

Field 'ppQueryResults−>Data' in 5th parameter 'ppQueryResults' (pointer) has type 'anon-union-windns.h-1396'.

DnsQuery_UTF8 ( PCSTR pszName, WORD wType, DWORD Options, PVOID pExtra, PDNS_RECORD* ppQueryResults, PVOID* pReserved )

Field 'ppQueryResults−>Data' in 5th parameter 'ppQueryResults' (pointer) has type 'anon-union-windns.h-1396'.

DnsQuery_W ( PCWSTR pszName, WORD wType, DWORD Options, PVOID pExtra, PDNS_RECORD* ppQueryResults, PVOID* pReserved )

Field 'ppQueryResults−>Data' in 5th parameter 'ppQueryResults' (pointer) has type 'anon-union-windns.h-1396'.

DnsRecordCompare ( PDNS_RECORD pRecord1, PDNS_RECORD pRecord2 )

Field 'pRecord2−>Data' in 2nd parameter 'pRecord2' (pointer) has type 'anon-union-windns.h-1396'.

DnsRecordCopyEx ( PDNS_RECORD pRecord, DNS_CHARSET CharSetIn, DNS_CHARSET CharSetOut )

Field 'pRecord−>Data' in 1st parameter 'pRecord' (pointer) has type 'anon-union-windns.h-1396'.

DnsRecordSetCompare ( PDNS_RECORD pRR1, PDNS_RECORD pRR2, PDNS_RECORD* ppDiff1, PDNS_RECORD* ppDiff2 )

Field 'pRR2−>Data' in 2nd parameter 'pRR2' (pointer) has type 'anon-union-windns.h-1396'.

DnsRecordSetCopyEx ( PDNS_RECORD pRecordSet, DNS_CHARSET CharSetIn, DNS_CHARSET CharSetOut )

Field 'pRecordSet−>Data' in 1st parameter 'pRecordSet' (pointer) has type 'anon-union-windns.h-1396'.

DnsRecordSetDetach ( PDNS_RECORD pRecordList )

Field 'pRecordList−>Data' in 1st parameter 'pRecordList' (pointer) has type 'anon-union-windns.h-1396'.

DnsReplaceRecordSetA ( PDNS_RECORD pReplaceSet, DWORD Options, HANDLE hContext, PVOID pExtraInfo, PVOID pReserved )

Field 'pReplaceSet−>Data' in 1st parameter 'pReplaceSet' (pointer) has type 'anon-union-windns.h-1396'.

DnsReplaceRecordSetUTF8 ( PDNS_RECORD pReplaceSet, DWORD Options, HANDLE hContext, PVOID pExtraInfo, PVOID pReserved )

Field 'pReplaceSet−>Data' in 1st parameter 'pReplaceSet' (pointer) has type 'anon-union-windns.h-1396'.

DnsReplaceRecordSetW ( PDNS_RECORD pReplaceSet, DWORD Options, HANDLE hContext, PVOID pExtraInfo, PVOID pReserved )

Field 'pReplaceSet−>Data' in 1st parameter 'pReplaceSet' (pointer) has type 'anon-union-windns.h-1396'.

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Problems with Data Types, Low Severity (13)

windns.h
[+] struct DNS_KEY_DATA (1)

	Change	Effect
1	Size of this type has been changed from 6 bytes to 10 bytes.	The fields or parameters of such data type may be incorrectly initialized or accessed by old client applications.

[+] affected symbols (16)

DnsExtractRecordsFromMessage_UTF8 ( PDNS_MESSAGE_BUFFER pDnsBuffer, WORD wMessageLength, PDNS_RECORD* ppRecord )

Field 'ppRecord−>Data−>Key' in 3rd parameter 'ppRecord' (pointer) has type 'DNS_KEY_DATA'.

DnsExtractRecordsFromMessage_W ( PDNS_MESSAGE_BUFFER pDnsBuffer, WORD wMessageLength, PDNS_RECORD* ppRecord )

Field 'ppRecord−>Data−>Key' in 3rd parameter 'ppRecord' (pointer) has type 'DNS_KEY_DATA'.

DnsModifyRecordsInSet_A ( PDNS_RECORD pAddRecords, PDNS_RECORD pDeleteRecords, DWORD Options, HANDLE hCredentials, PVOID pExtraList, PVOID pReserved )

Field 'pDeleteRecords−>Data−>KEY' in 2nd parameter 'pDeleteRecords' (pointer) has type 'DNS_KEY_DATA'.