Binary compatibility report for the libmemcached library between 0.34 and 0.35 versions on x86

Test Info

Library Name	libmemcached
Version #1	0.34
Version #2	0.35
CPU Type	x86
GCC Version	4.6.1

Test Results

Total Header Files	16
Total Shared Libraries	3
Total Symbols / Types	104 / 105
Verdict	Incompatible (1%)

Problem Summary

	Severity	Count
Added Symbols	-	6
Removed Symbols	High	0
Problems with Data Types	High	0
	Medium	1
	Low	4
Problems with Symbols	High	0
	Medium	0
	Low	4
Problems with Constants	Low	0
Other Changes in Data Types	-	2
Other Changes in Constants	-	2

Added Symbols (6)

memcached.h, libmemcached.so.3.0.0
memcached_decrement_by_key ( memcached_st* ptr, char const* master_key, size_t master_key_length, char const* key, size_t key_length, uint64_t offset, uint64_t* value ) @@ libmemcached_3
memcached_decrement_with_initial_by_key ( memcached_st* ptr, char const* master_key, size_t master_key_length, char const* key, size_t key_length, uint64_t offset, uint64_t initial, time_t expiration, uint64_t* value ) @@ libmemcached_3
memcached_increment_by_key ( memcached_st* ptr, char const* master_key, size_t master_key_length, char const* key, size_t key_length, uint64_t offset, uint64_t* value ) @@ libmemcached_3
memcached_increment_with_initial_by_key ( memcached_st* ptr, char const* master_key, size_t master_key_length, char const* key, size_t key_length, uint64_t offset, uint64_t initial, time_t expiration, uint64_t* value ) @@ libmemcached_3

memcached_get.h, libmemcached.so.3.0.0
memcached_mget_execute ( memcached_st* ptr, char const*const* keys, size_t const* key_length, size_t number_of_keys, memcached_execute_function* callback, void* context, unsigned int number_of_callbacks ) @@ libmemcached_3
memcached_mget_execute_by_key ( memcached_st* ptr, char const* master_key, size_t master_key_length, char const*const* keys, size_t const* key_length, size_t number_of_keys, memcached_execute_function* callback, void* context, unsigned int number_of_callbacks ) @@ libmemcached_3

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Problems with Data Types, Medium Severity (1)

	Change	Effect
1	Type of field interface_version has been changed from uint64_t (8 bytes) to enum memcached_protocol_interface_version_t (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.

callback.h
[+] struct memcached_binary_protocol_callback_st (1)

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Problems with Data Types, Low Severity (4)

	Change	Effect
1	Size of this type has been changed from 20 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 callbacks 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 568 bytes to 572 bytes.	The fields or parameters of such data type may be incorrectly initialized or accessed by old client applications.

	Change	Effect
1	Value of member MEMCACHED_MAXIMUM_RETURN has been changed from 38 to 39.	Applications may execute a wrong branch of code in the library and therefore change the behavior.

callback.h
[+] struct memcached_binary_protocol_callback_st (1)

memcached.h
[+] struct memcached_st (2)

memcached_constants.h
[+] enum memcached_return (1)

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Problems with Symbols, Low Severity (4)

	Change	Effect
1	Type of 3rd parameter key_length has been changed from size_t* to size_t const*.	Replacement of parameter data type may indicate a change in its semantic meaning.
2	Type of 2nd parameter keys has been changed from char const** to char constconst.	Replacement of parameter data type may indicate a change in its semantic meaning.

	Change	Effect
1	Type of 5th parameter key_length has been changed from size_t* to size_t const*.	Replacement of parameter data type may indicate a change in its semantic meaning.
2	Type of 4th parameter keys has been changed from char const** to char constconst.	Replacement of parameter data type may indicate a change in its semantic meaning.

memcached_get.h, libmemcached.so.3.0.0
[+] memcached_mget ( memcached_st* ptr, char const** keys, size_t* key_length, size_t number_of_keys ) @@ libmemcached_3 (2)
[+] memcached_mget_by_key ( memcached_st* ptr, char const* master_key, size_t master_key_length, char const** keys, size_t* key_length, size_t number_of_keys ) @@ libmemcached_3 (2)

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Other Changes in Data Types (2)

	Change	Effect
1	The member MEMCACHED_BEHAVIOR_KETAMA_COMPAT_MODE with value 30 has been added.	No effect.

	Change	Effect
1	The member MEMCACHED_INVALID_ARGUMENTS with value 38 has been added.	No effect.

memcached_constants.h
[+] enum memcached_behavior (1)
[+] enum memcached_return (1)

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Other Changes in Constants (2)

	Change	Effect
1	The constant MEMCACHED_KETAMA_COMPAT_LIBMEMCACHED with value 0 has been added.	No effect.

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

memcached_constants.h
[+] MEMCACHED_KETAMA_COMPAT_LIBMEMCACHED
[+] MEMCACHED_KETAMA_COMPAT_SPY

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Header Files (16)

cache.h
callback.h
memcached.h
memcached_configure.h
memcached_constants.h
memcached_get.h
memcached_pool.h
memcached_result.h
memcached_server.h
memcached_storage.h
memcached_string.h
memcached_types.h
memcached_util.h
memcached_watchpoint.h
protocol_handler.h
visibility.h

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Shared Libraries (3)

libmemcached.so.3.0.0
libmemcachedprotocol.so.0.0.0
libmemcachedutil.so.0.0.0

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