Binary compatibility report for the libmemcached library between 0.11 and 0.12 versions on x86

Test Info

Library Name	libmemcached
Version #1	0.11
Version #2	0.12
CPU Type	x86
GCC Version	4.6.1

Test Results

Total Header Files	1
Total Shared Libraries	1
Total Symbols / Types	39 / 44
Verdict	Incompatible (97.4%)

Problem Summary

	Severity	Count
Added Symbols	-	9
Removed Symbols	High	0
Problems with Data Types	High	1
	Medium	6
	Low	4
Problems with Symbols	High	0
	Medium	0
	Low	0
Problems with Constants	Low	0
Other Changes in Data Types	-	3
Other Changes in Constants	-	3

Added Symbols (9)

memcached.h, libmemcached.so.1.1.2
memcached_add_by_key ( memcached_st* ptr, char* master_key, size_t master_key_length, char* key, size_t key_length, char* value, size_t value_length, time_t expiration, uint16_t flags )
memcached_append_by_key ( memcached_st* ptr, char* master_key, size_t master_key_length, char* key, size_t key_length, char* value, size_t value_length, time_t expiration, uint16_t flags )
memcached_cas_by_key ( memcached_st* ptr, char* master_key, size_t master_key_length, char* key, size_t key_length, char* value, size_t value_length, time_t expiration, uint16_t flags, uint64_t cas )
memcached_delete_by_key ( memcached_st* ptr, char* master_key, size_t master_key_length, char* key, size_t key_length, time_t expiration )
memcached_get_by_key ( memcached_st* ptr, char* master_key, size_t master_key_length, char* key, size_t key_length, size_t* value_length, uint16_t* flags, enum memcached_return* error )
memcached_mget_by_key ( memcached_st* ptr, char* master_key, size_t master_key_length, char** keys, size_t* key_length, unsigned int number_of_keys )
memcached_prepend_by_key ( memcached_st* ptr, char* master_key, size_t master_key_length, char* key, size_t key_length, char* value, size_t value_length, time_t expiration, uint16_t flags )
memcached_replace_by_key ( memcached_st* ptr, char* master_key, size_t master_key_length, char* key, size_t key_length, char* value, size_t value_length, time_t expiration, uint16_t flags )
memcached_set_by_key ( memcached_st* ptr, char* master_key, size_t master_key_length, char* key, size_t key_length, char* value, size_t value_length, time_t expiration, uint16_t flags )

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Problems with Data Types, High Severity (1)

	Change	Effect
1	Field servAddr 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.

memcached.h
[+] struct memcached_server_st (1)

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Problems with Data Types, Medium Severity (6)

	Change	Effect
1	Field address_info 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 read_data_length 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 hostname has been changed from char* (4 bytes) to char[64] (64 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 distribution 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 replicas 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 wheel 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.

memcached.h
[+] struct memcached_server_st (3)
[+] struct memcached_st (3)

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Problems with Data Types, Low Severity (4)

	Change	Effect
1	Value of member MEMCACHED_MAXIMUM_RETURN has been changed from 29 to 31.	Applications may execute a wrong branch of code in the library and therefore change the behavior.

	Change	Effect
1	Size of this type has been changed from 16460 bytes to 16512 bytes.	The fields or parameters of such data type may be incorrectly initialized or accessed by old client applications.
2	The pointer level of field hostname 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.

	Change	Effect
1	Size of this type has been changed from 76 bytes to 4180 bytes.	The fields or parameters of such data type may be incorrectly initialized or accessed by old client applications.

memcached.h
[+] enum memcached_return (1)
[+] struct memcached_server_st (2)
[+] struct memcached_st (1)

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Other Changes in Data Types (3)

	Change	Effect
1	The member MEMCACHED_BEHAVIOR_DISTRIBUTION with value 9 has been added.	No effect.

	Change	Effect
1	The member MEMCACHED_FETCH_NOTFINISHED with value 29 has been added.	No effect.
2	The member MEMCACHED_TIMEOUT with value 30 has been added.	No effect.

memcached.h
[+] enum memcached_behavior (1)
[+] enum memcached_return (2)

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Other Changes in Constants (3)

	Change	Effect
1	The constant MEMCACHED_MAX_HOST_LENGTH with value 64 has been added.	No effect.

	Change	Effect
1	The constant MEMCACHED_STRIDE with value 4 has been added.	No effect.

	Change	Effect
1	The constant MEMCACHED_WHEEL_SIZE with value 1024 has been added.	No effect.

memcached.h
[+] MEMCACHED_MAX_HOST_LENGTH
[+] MEMCACHED_STRIDE
[+] MEMCACHED_WHEEL_SIZE

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Header Files (1)

memcached.h

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Shared Libraries (1)

libmemcached.so.1.0.1

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