Binary compatibility report for the ENet library between 1.2.5 and 1.3.0 versions on x86

Test Info

Library Name	ENet
Version #1	1.2.5
Version #2	1.3.0
CPU Type	x86
GCC Version	4.6.1

Test Results

Total Header Files	8
Total Shared Libraries	1
Total Symbols / Types	58 / 120
Verdict	Incompatible (48.3%)

Problem Summary

	Severity	Count
Added Symbols	-	6
Removed Symbols	High	1
Problems with Data Types	High	2
	Medium	21
	Low	16
Problems with Symbols	High	1
	Medium	1
	Low	0
Problems with Constants	Low	1

Added Symbols (6)

enet.h, libenet.so.1.0.0
enet_host_compress ( ENetHost* p1, ENetCompressor const* p2 )
enet_host_compress_with_range_coder ( ENetHost* host )
enet_range_coder_compress ( void* p1, struct ENetBuffer const* p2, size_t p3, size_t p4, enet_uint8* p5, size_t p6 )
enet_range_coder_create ( )
enet_range_coder_decompress ( void* p1, enet_uint8 const* p2, size_t p3, enet_uint8* p4, size_t p5 )
enet_range_coder_destroy ( void* p1 )

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Removed Symbols (1)

callbacks.h, libenet.so.0.0.3
enet_rand ( )

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Problems with Data Types, High Severity (2)

	Change	Effect
1	Field rand has been removed from the middle position of this structural type.	1) Previous accesses of applications to the removed field will be incorrect. 2) Layout of structure fields has been changed and therefore fields at higher positions of the structure definition may be incorrectly accessed by applications.

	Change	Effect
1	Field incomingUnreliableSequenceNumber has been removed from the middle position of this structural type.	1) Previous accesses of applications to the removed field will be incorrect. 2) Layout of structure fields has been changed and therefore fields at higher positions of the structure definition may be incorrectly accessed by applications.

callbacks.h
[+] struct _ENetCallbacks (1)

enet.h
[+] struct _ENetChannel (1)

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Problems with Symbols, High Severity (1)

	Change	Effect
1	3rd parameter p3 has been added to the calling stack at the middle position.	Layout of parameter's stack has been changed and therefore parameters at higher positions in the stack may be incorrectly initialized by applications.

enet.h, libenet.so.0.0.3
[+] enet_host_create ( ENetAddress const* p1, size_t p2, enet_uint32 p3, enet_uint32 p4 ) (1)

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Problems with Data Types, Medium Severity (21)

	Change	Effect
1	Size of field command has been changed from 40 bytes to 48 bytes.	1) Size of the inclusive type has been changed. 2) Previous accesses of applications and library functions to this field may be broken.

	Change	Effect
1	Field compressor 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 packetData 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.
3	Field randomSeed 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.
4	Size of field commands has been changed from 1280 bytes to 1536 bytes.	1) Size of the inclusive type has been changed. 2) Previous accesses of applications and library functions to this field and fields at higher positions of the structure definition may be broken.
5	Type of field receivedData has been changed from enet_uint8[4096] (4096 bytes) to enet_uint8* (4 bytes).	1) Size of the inclusive type has been changed. 2) Previous accesses of applications and library functions to this field and fields at higher positions of the structure definition may be broken.
6	The pointer level of field receivedData 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 command has been changed from 40 bytes to 48 bytes.	1) Size of the inclusive type has been changed. 2) Previous accesses of applications and library functions to this field and fields at higher positions of the structure definition may be broken.

	Change	Effect
1	Size of field command has been changed from 40 bytes to 48 bytes.	1) Size of the inclusive type has been changed. 2) Previous accesses of applications and library functions to this field and fields at higher positions of the structure definition may be broken.

	Change	Effect
1	Field outgoingSessionID 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	Type of field mtu has been changed from enet_uint16 (2 bytes) to enet_uint32 (4 bytes).	This field may be incorrectly initialized or accessed by applications.
3	Field disconnectData has been removed from this type.	1) Applications will access incorrect memory when attempting to access this field. 2) Size of the inclusive type has been changed.

	Change	Effect
1	Field incomingSessionID 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 outgoingSessionID 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.
3	Type of field mtu has been changed from enet_uint16 (2 bytes) to enet_uint32 (4 bytes).	1) Size of the inclusive type has been changed. 2) Previous accesses of applications and library functions to this field and fields at higher positions of the structure definition may be broken.
4	Field sessionID has been removed from this type.	1) Applications will access incorrect memory when attempting to access this field. 2) Size of the inclusive type has been changed.

	Change	Effect
1	Field incomingSessionID 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 outgoingSessionID 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.
3	Type of field mtu has been changed from enet_uint16 (2 bytes) to enet_uint32 (4 bytes).	1) Size of the inclusive type has been changed. 2) Previous accesses of applications and library functions to this field and fields at higher positions of the structure definition may be broken.

	Change	Effect
1	Size of field connect has been changed from 40 bytes to 48 bytes.	1) Size of the inclusive type has been changed. 2) Previous accesses of applications and library functions to this field may be broken.
2	Size of field verifyConnect has been changed from 36 bytes to 44 bytes.	1) Size of the inclusive type has been changed. 2) Previous accesses of applications and library functions to this field may be broken.

enet.h
[+] struct _ENetAcknowledgement (1)
[+] struct _ENetHost (6)
[+] struct _ENetIncomingCommand (1)
[+] struct _ENetOutgoingCommand (1)
[+] struct _ENetPeer (3)

protocol.h
[+] struct _ENetProtocolConnect (4)
[+] struct _ENetProtocolVerifyConnect (3)
[+] union _ENetProtocol (2)

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Problems with Symbols, Medium Severity (1)

	Change	Effect
1	4th parameter p4 has been added to the calling stack.	This parameter will not be initialized by old clients.

enet.h, libenet.so.0.0.3
[+] enet_host_connect ( ENetHost* p1, ENetAddress const* p2, size_t p3 ) (1)

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Problems with Data Types, Low Severity (16)

	Change	Effect
1	Size of this type has been changed from 16 bytes to 12 bytes.	The fields or parameters of such data type may be incorrectly initialized or accessed by old client applications.

	Change	Effect
1	Size of this type has been changed from 52 bytes to 60 bytes.	The fields or parameters of such data type may be incorrectly initialized or accessed by old client applications.

	Change	Effect
1	Size of this type has been changed from 60 bytes to 56 bytes.	The fields or parameters of such data type may be incorrectly initialized or accessed by old client applications.

	Change	Effect
1	Size of this type has been changed from 6004 bytes to 10380 bytes.	The fields or parameters of such data type may be incorrectly initialized or accessed by old client applications.

	Change	Effect
1	Size of this type has been changed from 68 bytes to 76 bytes.	The fields or parameters of such data type may be incorrectly initialized or accessed by old client applications.

	Change	Effect
1	Size of this type has been changed from 76 bytes to 84 bytes.	The fields or parameters of such data type may be incorrectly initialized or accessed by old client applications.

	Change	Effect
1	Field eventData has been added to this type.	1) This field will not be initialized by old clients. 2) Size of the inclusive type has been changed. NOTE: this field should be accessed only from the new library functions, otherwise it may result in crash or incorrect behavior of applications.
2	Size of this type has been changed from 360 bytes to 364 bytes.	The fields or parameters of such data type may be incorrectly initialized or accessed by old client applications.
3	Field incomingSessionID has been added to this type.	This field will not be initialized by old clients. NOTE: this field should be accessed only from the new library functions, otherwise it may result in crash or incorrect behavior of applications.
4	Field sessionID has been renamed to connectID.	Renaming of a field in data type may indicate a change in the semantic meaning of the field.

	Change	Effect
1	Field connectID has been added to this type.	1) This field will not be initialized by old clients. 2) Size of the inclusive type has been changed. NOTE: this field should be accessed only from the new library functions, otherwise it may result in crash or incorrect behavior of applications.
2	Field data has been added to this type.	1) This field will not be initialized by old clients. 2) Size of the inclusive type has been changed. NOTE: this field should be accessed only from the new library functions, otherwise it may result in crash or incorrect behavior of applications.
3	Size of this type has been changed from 40 bytes to 48 bytes.	The fields or parameters of such data type may be incorrectly initialized or accessed by old client applications.

	Change	Effect
1	Field connectID has been added to this type.	1) This field will not be initialized by old clients. 2) Size of the inclusive type has been changed. NOTE: this field should be accessed only from the new library functions, otherwise it may result in crash or incorrect behavior of applications.
2	Size of this type has been changed from 36 bytes to 44 bytes.	The fields or parameters of such data type may be incorrectly initialized or accessed by old client applications.

	Change	Effect
1	Size of this type has been changed from 40 bytes to 48 bytes.	The fields or parameters of such data type may be incorrectly initialized or accessed by old client applications.

callbacks.h
[+] struct _ENetCallbacks (1)

enet.h
[+] struct _ENetAcknowledgement (1)
[+] struct _ENetChannel (1)
[+] struct _ENetHost (1)
[+] struct _ENetIncomingCommand (1)
[+] struct _ENetOutgoingCommand (1)
[+] struct _ENetPeer (4)

protocol.h
[+] struct _ENetProtocolConnect (3)
[+] struct _ENetProtocolVerifyConnect (2)
[+] union _ENetProtocol (1)

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Problems with Constants, Low Severity (1)

	Change	Effect
1	The value of constant ENET_PROTOCOL_MAXIMUM_PEER_ID has been changed from 32767 to 4095.	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.

protocol.h
[+] ENET_PROTOCOL_MAXIMUM_PEER_ID

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Header Files (8)

callbacks.h
enet.h
list.h
protocol.h
time.h
types.h
unix.h
utility.h

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Shared Libraries (1)

libenet.so.0.0.3

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