Binary compatibility report for the rpcrt4.dll library between 5.1.2600.5795-Windows SDK 5.0 and 6.0.6001.18000-Windows SDK 6.0 versions on x86

Test Info

Library Name	rpcrt4.dll
Version #1	5.1.2600.5795-Windows SDK 5.0
Version #2	6.0.6001.18000-Windows SDK 6.0
CPU Architecture	x86

Test Results

Total Header Files	8
Total Dynamic Libraries	1
Total Symbols / Types	424 / 436
Verdict	Incompatible (32.55%)

Problem Summary

	Severity	Count
Added Symbols	-	15
Removed Symbols	High	2
Problems with Data Types	High	0
	Medium	9
	Low	6
Problems with Symbols	High	0
	Medium	0
	Low	2
Problems with Constants	Low	5

Added Symbols (15)

rpcasync.h, rpcrt4.dll
RpcBindingBind ( PRPC_ASYNC_STATE pAsync, RPC_BINDING_HANDLE Binding, RPC_IF_HANDLE IfSpec )
RpcBindingUnbind ( RPC_BINDING_HANDLE Binding )
RpcServerSubscribeForNotification ( RPC_BINDING_HANDLE Binding, RPC_NOTIFICATIONS Notification, RPC_NOTIFICATION_TYPES NotificationType, RPC_ASYNC_NOTIFICATION_INFO* NotificationInfo )
RpcServerUnsubscribeForNotification ( RPC_BINDING_HANDLE Binding, RPC_NOTIFICATIONS Notification, unsigned long* NotificationsQueued )

rpcdce.h, rpcrt4.dll
RpcBindingCreateA ( RPC_BINDING_HANDLE_TEMPLATE_V1_A* Template, RPC_BINDING_HANDLE_SECURITY_V1_A* Security, RPC_BINDING_HANDLE_OPTIONS_V1* Options, RPC_BINDING_HANDLE* Binding )
RpcBindingCreateW ( RPC_BINDING_HANDLE_TEMPLATE_V1_W* Template, RPC_BINDING_HANDLE_SECURITY_V1_W* Security, RPC_BINDING_HANDLE_OPTIONS_V1* Options, RPC_BINDING_HANDLE* Binding )
RpcExceptionFilter ( unsigned long ExceptionCode )
RpcServerCompleteSecurityCallback ( RPC_BINDING_HANDLE BindingHandle, RPC_STATUS Status )
RpcServerInqBindingHandle ( RPC_BINDING_HANDLE* Binding )

rpcdcep.h, rpcrt4.dll
I_RpcBindingCreateNP ( RPC_WSTR ServerName, RPC_WSTR ServiceName, RPC_WSTR NetworkOptions, RPC_BINDING_HANDLE* Binding )
I_RpcBindingInqMarshalledTargetInfo ( RPC_BINDING_HANDLE Binding, unsigned long* MarshalledTargetInfoSize, RPC_CSTR* MarshalledTargetInfo )
I_RpcBindingInqSecurityContextKeyInfo ( RPC_BINDING_HANDLE Binding, void* KeyInfo )
I_RpcRecordCalloutFailure ( RPC_STATUS RpcStatus, RDR_CALLOUT_STATE* CallOutState, unsigned short* DllName )
I_RpcServerInqRemoteConnAddress ( RPC_BINDING_HANDLE Binding, void* Buffer, unsigned long* BufferSize, unsigned long* AddressFormat )
I_RpcServerStartService ( RPC_WSTR Protseq, RPC_WSTR Endpoint, RPC_IF_HANDLE IfSpec )

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Removed Symbols (2)

rpcdcep.h, rpcrt4.dll
I_RpcBindingInqConnId ( RPC_BINDING_HANDLE Binding, void** ConnId, int* pfFirstCall )
I_RpcProxyNewConnection ( unsigned long ConnectionType, unsigned short* ServerAddress, unsigned short* ServerPort, unsigned short* MinConnTimeout, void* ConnectionParameter, RDR_CALLOUT_STATE* CallOutState, I_RpcProxyCallbackInterface* ProxyCallbackInterface )

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Problems with Data Types, Medium Severity (9)

	Change	Effect
1	The pointer level of field PointerToRefId has been increased from 0 to 1.	The library functions may try to access unallocated memory by the dereferencing of old field value and therefore cause a crash of applications.
2	The pointer level of field RefIdToPointer has been increased from 0 to 1.	The library functions may try to access unallocated memory by the dereferencing of old field value and therefore cause a crash of applications.

	Change	Effect
1	Size of field fUnused has been changed from 1 byte to 3 bits.	Previous accesses of applications and library functions to this field may be broken.
2	Field ContextHandleHash 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 fInFree 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.
4	Field fIsOicf 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.
5	Field fIsOut 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.
6	Field fNeedMCCP 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.
7	The relative position of field fBufferValid has been changed from 16 to 38.	Applications will access incorrect memory when attempting to access this field.

rpcndr.h
[+] struct _FULL_PTR_XLAT_TABLES (2)
[+] struct _MIDL_STUB_MESSAGE (7)

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Problems with Data Types, Low Severity (6)

	Change	Effect
1	Base type has been changed from void()(void,unsigned short,unsigned long,void,RPC_STATUS) to void()(void,RPC_WSTR,unsigned long,void*,RPC_STATUS).	Possible incorrect initialization of parameters by applications.

	Change	Effect
1	Size of this type has been changed from 32 bytes to 16 bytes.	The fields or parameters of such data type may be incorrectly initialized or accessed by old client applications.

	Change	Effect
1	Field CorrDespIncrement has been added to this type.	ATTENTION: this field should be accessed only from the new library functions, otherwise it may result in crash or incorrect behavior of applications.
2	The pointer level of field pCSInfo has been decreased from 1 to 0.	The library functions will treat the value of this field as the lower-dimension array and will not read all elements. This may change the behavior of applications.
3	Type of field pCSInfo has been changed from CS_STUB_INFO* to INT_PTR.	Replacement of the field data type may indicate a change in the semantic meaning of the field.
4	Field fIsOicfServer has been renamed to fIsIn.	Renaming of a field in data type may indicate a change in the semantic meaning of the field.

rpcdce.h
[+] typedef RPC_AUTH_KEY_RETRIEVAL_FN (1)

rpcndr.h
[+] struct _FULL_PTR_XLAT_TABLES (1)
[+] struct _MIDL_STUB_MESSAGE (4)

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Problems with Symbols, Low Severity (2)

	Change	Effect
1	Type of 1st parameter Uuid has been changed from UUID* to UUID const*.	Replacement of parameter data type may indicate a change in its semantic meaning.

	Change	Effect
1	Type of 1st parameter Uuid has been changed from UUID* to UUID const*.	Replacement of parameter data type may indicate a change in its semantic meaning.

rpcdce.h, rpcrt4.dll
[+] UuidToStringA ( UUID* Uuid, RPC_CSTR* StringUuid ) (1)
[+] UuidToStringW ( UUID* Uuid, RPC_WSTR* StringUuid ) (1)

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Problems with Constants (5)

	Change	Effect
1	The value of constant RPC_QUERY_CLIENT_PRINCIPAL_NAME has been changed from (4) to (0x04).	Applications will pass an old value of this constant as the parameter to the new-version library functions, that expect a new one. This may result in crash of incorrect behavior of applications.

	Change	Effect
1	The value of constant RPC_QUERY_SERVER_PRINCIPAL_NAME has been changed from (2) to (0x02).	Applications will pass an old value of this constant as the parameter to the new-version library functions, that expect a new one. This may result in crash of incorrect behavior of applications.

	Change	Effect
1	The value of constant RPC_C_OPT_MAX_OPTIONS has been changed from 14 to 17.	Applications will pass an old value of this constant as the parameter to the new-version library functions, that expect a new one. This may result in crash of incorrect behavior of applications.

	Change	Effect
1	The value of constant RPC_CONTEXT_HANDLE_DEFAULT_GUARD has been changed from ((void ) -4083) to ((void )(ULONG_PTR)0xFFFFF00D).	Applications will pass an old value of this constant as the parameter to the new-version library functions, that expect a new one. This may result in crash of incorrect behavior of applications.

	Change	Effect
1	The value of constant TARGET_IS_NT51_OR_LATER has been changed from 0 to 1.	Applications will pass an old value of this constant as the parameter to the new-version library functions, that expect a new one. This may result in crash of incorrect behavior of applications.

rpcasync.h
[+] RPC_QUERY_CLIENT_PRINCIPAL_NAME
[+] RPC_QUERY_SERVER_PRINCIPAL_NAME

rpcdce.h
[+] RPC_C_OPT_MAX_OPTIONS

rpcdcep.h
[+] RPC_CONTEXT_HANDLE_DEFAULT_GUARD

rpcndr.h
[+] TARGET_IS_NT51_OR_LATER

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Header Files (8)

midles.h
rpcasync.h
rpcdce.h
rpcdcep.h
rpcndr.h
rpcproxy.h
rpcssl.h
unknwn.h

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Dynamic Libraries (1)

rpcrt4.dll

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