Binary compatibility report for the libmemcached library between 0.48 and 0.49 versions on x86

Test Info

Library Name	libmemcached
Version #1	0.48
Version #2	0.49
CPU Type	x86
GCC Version	4.6.1

Test Results

Total Header Files	49
Total Shared Libraries	4
Total Symbols / Types	153 / 177
Verdict	Incompatible (58.2%)

Problem Summary

	Severity	Count
Added Symbols	-	11
Removed Symbols	High	0
Problems with Data Types	High	10
	Medium	10
	Low	10
Problems with Symbols	High	0
	Medium	0
	Low	28
Problems with Constants	Low	0
Other Changes in Data Types	-	11
Other Changes in Constants	-	10

Added Symbols (11)

behavior.h, libmemcached.so.7.0.0
memcached_bucket_set ( memcached_st* self, uint32_t const* host_map, uint32_t const* forward_map, uint32_t const buckets, uint32_t const replicas )

error.h, libmemcached.so.7.0.0
memcached_error_print ( memcached_st const* self )
memcached_last_error ( memcached_st* memc )
memcached_last_error_errno ( memcached_st* memc )
memcached_last_error_message ( memcached_st* memc )

hash.h, libmemcached.so.7.0.0
libmemcached_string_hash ( enum memcached_hash_t type )

memcached.h, libmemcached.so.7.0.0
memcached ( char const* string, size_t string_length )
memcached_reset ( memcached_st* ptr )

options.h, libmemcached.so.7.0.0
libmemcached_check_configuration ( char const* option_string, size_t length, char* error_buffer, size_t error_buffer_size )

pool.h, libmemcachedutil.so.2.0.0
memcached_pool ( char const* option_string, size_t option_string_length )

str_algorithm.h, libmemcached.so.7.0.0
libhashkit_string_hash ( enum hashkit_hash_algorithm_t type )

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Problems with Data Types, High Severity (10)

	Change	Effect
1	Field cached_errno 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.
2	Field continuum 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.
3	Field continuum_count 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.
4	Field continuum_points_counter 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.
5	Field next_distribution_rebuild 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.
6	Field prefix_key_length 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 cork 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.
2	Field ketama_weighted 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.
3	Field reuse_memory 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.
4	Field use_cache_lookups 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_st (6)
[+] struct memcached_st::anon-struct-memcached.h-66 (4)

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Problems with Data Types, Medium Severity (10)

	Change	Effect
1	Field configure 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 error_messages 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 ketama 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	Field query_id 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.
5	Field virtual_bucket 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.
6	Size of field flags has been changed from 3 bytes to 2 bytes.	Previous accesses of applications and library functions to this field may be broken.
7	Type of field prefix_key has been changed from char[128] (128 bytes) to struct memcached_array_st* (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.
8	The pointer level of field prefix_key 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	Field state has been removed from the middle position of this structural type.	1) Applications will access incorrect memory when attempting to access this field. 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 sockaddr_inited has been removed from the middle position of this structural type.	1) Applications will access incorrect memory when attempting to access this field. 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_st (8)

server.h
[+] struct memcached_server_st (1)
[+] struct memcached_server_st::anon-struct-server.h-17 (1)

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Problems with Data Types, Low Severity (10)

	Change	Effect
1	Value of member MEMCACHED_BEHAVIOR_MAX has been changed from 34 to 36.	Applications may execute a wrong branch of code in the library and therefore change the behavior.

	Change	Effect
1	Value of member MEMCACHED_MAXIMUM_RETURN has been changed from 43 to 46.	Applications may execute a wrong branch of code in the library and therefore change the behavior.

	Change	Effect
1	Value of member MEMCACHED_DISTRIBUTION_CONSISTENT_MAX has been changed from 5 to 7.	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 616 bytes to 516 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 3 bytes to 2 bytes.	The fields or parameters of such data type may be incorrectly initialized or accessed by old client applications.

	Change	Effect
1	Type of field root has been changed from memcached_st const* to memcached_st*.	Replacement of the field data type may indicate a change in the semantic meaning of the field.

	Change	Effect
1	Field address_info_next 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.

	Change	Effect
1	Field is_dead 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.

	Change	Effect
1	Type of field root has been changed from memcached_st const* to memcached_st*.	Replacement of the field data type may indicate a change in the semantic meaning of the field.

	Change	Effect
1	Value of member HASHKIT_MAXIMUM_RETURN has been changed from 3 to 5.	Applications may execute a wrong branch of code in the library and therefore change the behavior.

constants.h
[+] enum memcached_behavior_t (1)
[+] enum memcached_return_t (1)
[+] enum memcached_server_distribution_t (1)

memcached.h
[+] struct memcached_st (1)
[+] struct memcached_st::anon-struct-memcached.h-66 (1)

result.h
[+] struct memcached_result_st (1)

server.h
[+] struct memcached_server_st (1)
[+] struct memcached_server_st::anon-struct-server.h-17 (1)

string.h
[+] struct memcached_string_st (1)

types.h
[+] enum hashkit_return_t (1)

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Problems with Symbols, Low Severity (28)

	Change	Effect
1	2nd parameter master_key has been renamed to group_key.	Renaming of a parameter may indicate a change in its semantic meaning.
2	3rd parameter master_key_length has been renamed to group_key_length.	Renaming of a parameter may indicate a change in its semantic meaning.

	Change	Effect
1	2nd parameter master_key has been renamed to group_key.	Renaming of a parameter may indicate a change in its semantic meaning.
2	3rd parameter master_key_length has been renamed to group_key_length.	Renaming of a parameter may indicate a change in its semantic meaning.

	Change	Effect
1	2nd parameter master_key has been renamed to group_key.	Renaming of a parameter may indicate a change in its semantic meaning.
2	3rd parameter master_key_length has been renamed to group_key_length.	Renaming of a parameter may indicate a change in its semantic meaning.

	Change	Effect
1	2nd parameter master_key has been renamed to group_key.	Renaming of a parameter may indicate a change in its semantic meaning.
2	3rd parameter master_key_length has been renamed to group_key_length.	Renaming of a parameter may indicate a change in its semantic meaning.

	Change	Effect
1	2nd parameter master_key has been renamed to group_key.	Renaming of a parameter may indicate a change in its semantic meaning.
2	3rd parameter master_key_length has been renamed to group_key_length.	Renaming of a parameter may indicate a change in its semantic meaning.

	Change	Effect
1	2nd parameter master_key has been renamed to group_key.	Renaming of a parameter may indicate a change in its semantic meaning.
2	3rd parameter master_key_length has been renamed to group_key_length.	Renaming of a parameter may indicate a change in its semantic meaning.

	Change	Effect
1	2nd parameter master_key has been renamed to group_key.	Renaming of a parameter may indicate a change in its semantic meaning.
2	3rd parameter master_key_length has been renamed to group_key_length.	Renaming of a parameter may indicate a change in its semantic meaning.

	Change	Effect
1	2nd parameter master_key has been renamed to group_key.	Renaming of a parameter may indicate a change in its semantic meaning.
2	3rd parameter master_key_length has been renamed to group_key_length.	Renaming of a parameter may indicate a change in its semantic meaning.

	Change	Effect
1	2nd parameter master_key has been renamed to group_key.	Renaming of a parameter may indicate a change in its semantic meaning.
2	3rd parameter master_key_length has been renamed to group_key_length.	Renaming of a parameter may indicate a change in its semantic meaning.

	Change	Effect
1	2nd parameter master_key has been renamed to group_key.	Renaming of a parameter may indicate a change in its semantic meaning.
2	3rd parameter master_key_length has been renamed to group_key_length.	Renaming of a parameter may indicate a change in its semantic meaning.

	Change	Effect
1	2nd parameter master_key has been renamed to group_key.	Renaming of a parameter may indicate a change in its semantic meaning.
2	3rd parameter master_key_length has been renamed to group_key_length.	Renaming of a parameter may indicate a change in its semantic meaning.

	Change	Effect
1	2nd parameter master_key has been renamed to group_key.	Renaming of a parameter may indicate a change in its semantic meaning.
2	3rd parameter master_key_length has been renamed to group_key_length.	Renaming of a parameter may indicate a change in its semantic meaning.

	Change	Effect
1	2nd parameter master_key has been renamed to group_key.	Renaming of a parameter may indicate a change in its semantic meaning.
2	3rd parameter master_key_length has been renamed to group_key_length.	Renaming of a parameter may indicate a change in its semantic meaning.

	Change	Effect
1	2nd parameter master_key has been renamed to group_key.	Renaming of a parameter may indicate a change in its semantic meaning.
2	3rd parameter master_key_length has been renamed to group_key_length.	Renaming of a parameter may indicate a change in its semantic meaning.

auto.h, libmemcached.so.6.0.0
[+] 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 ) (2)
[+] 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 ) (2)
[+] 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 ) (2)
[+] 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 ) (2)

delete.h, libmemcached.so.6.0.0
[+] memcached_delete_by_key ( memcached_st* ptr, char const* master_key, size_t master_key_length, char const* key, size_t key_length, time_t expiration ) (2)

get.h, libmemcached.so.6.0.0
[+] memcached_get_by_key ( memcached_st* ptr, char const* master_key, size_t master_key_length, char const* key, size_t key_length, size_t* value_length, uint32_t* flags, enum memcached_return_t* error ) (2)
[+] memcached_mget_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 const number_of_keys ) (2)
[+] 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, enum memcached_return_t(*callback)(memcached_st const*, memcached_result_st*, void*)*, void* context, uint32_t const number_of_callbacks ) (2)

storage.h, libmemcached.so.6.0.0
[+] memcached_add_by_key ( memcached_st* ptr, char const* master_key, size_t master_key_length, char const* key, size_t key_length, char const* value, size_t value_length, time_t expiration, uint32_t flags ) (2)
[+] memcached_append_by_key ( memcached_st* ptr, char const* master_key, size_t master_key_length, char const* key, size_t key_length, char const* value, size_t value_length, time_t expiration, uint32_t flags ) (2)
[+] memcached_cas_by_key ( memcached_st* ptr, char const* master_key, size_t master_key_length, char const* key, size_t key_length, char const* value, size_t value_length, time_t expiration, uint32_t flags, uint64_t cas ) (2)
[+] memcached_prepend_by_key ( memcached_st* ptr, char const* master_key, size_t master_key_length, char const* key, size_t key_length, char const* value, size_t value_length, time_t expiration, uint32_t flags ) (2)
[+] memcached_replace_by_key ( memcached_st* ptr, char const* master_key, size_t master_key_length, char const* key, size_t key_length, char const* value, size_t value_length, time_t expiration, uint32_t flags ) (2)
[+] memcached_set_by_key ( memcached_st* ptr, char const* master_key, size_t master_key_length, char const* key, size_t key_length, char const* value, size_t value_length, time_t expiration, uint32_t flags ) (2)

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Other Changes in Data Types (11)

	Change	Effect
1	The member MEMCACHED_BEHAVIOR_LOAD_FROM_FILE with value 34 has been added.	No effect.
2	The member MEMCACHED_BEHAVIOR_REMOVE_FAILED_SERVERS with value 35 has been added.	No effect.

	Change	Effect
1	The member MEMCACHED_DEPRECATED with value 45 has been added.	No effect.
2	The member MEMCACHED_PARSE_ERROR with value 43 has been added.	No effect.
3	The member MEMCACHED_PARSE_USER_ERROR with value 44 has been added.	No effect.

	Change	Effect
1	The member MEMCACHED_DISTRIBUTION_CONSISTENT_WEIGHTED with value 5 has been added.	No effect.
2	The member MEMCACHED_DISTRIBUTION_VIRTUAL_BUCKET with value 6 has been added.	No effect.

	Change	Effect
1	Field root became non-const.	No effect.

	Change	Effect
1	Field root became non-const.	No effect.

	Change	Effect
1	The member HASHKIT_INVALID_ARGUMENT with value 4 has been added.	No effect.
2	The member HASHKIT_INVALID_HASH with value 3 has been added.	No effect.

constants.h
[+] enum memcached_behavior_t (2)
[+] enum memcached_return_t (3)
[+] enum memcached_server_distribution_t (2)

result.h
[+] struct memcached_result_st (1)

string.h
[+] struct memcached_string_st (1)

types.h
[+] enum hashkit_return_t (2)

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Other Changes in Constants (10)

	Change	Effect
1	The constant TAP_CONNECT_CHECKPOINT with value 0x40 has been added.	No effect.

	Change	Effect
1	The constant TAP_CONNECT_FLAG_BACKFILL with value 0x01 has been added.	No effect.

	Change	Effect
1	The constant TAP_CONNECT_FLAG_DUMP with value 0x02 has been added.	No effect.

	Change	Effect
1	The constant TAP_CONNECT_FLAG_LIST_VBUCKETS with value 0x04 has been added.	No effect.

	Change	Effect
1	The constant TAP_CONNECT_FLAG_TAKEOVER_VBUCKETS with value 0x08 has been added.	No effect.

	Change	Effect
1	The constant TAP_CONNECT_REGISTERED_CLIENT with value 0x80 has been added.	No effect.

	Change	Effect
1	The constant TAP_CONNECT_REQUEST_KEYS_ONLY with value 0x20 has been added.	No effect.

	Change	Effect
1	The constant TAP_CONNECT_SUPPORT_ACK with value 0x10 has been added.	No effect.

	Change	Effect
1	The constant TAP_FLAG_ACK with value 0x01 has been added.	No effect.

	Change	Effect
1	The constant TAP_FLAG_NO_VALUE with value 0x02 has been added.	No effect.

protocol_binary.h
[+] TAP_CONNECT_CHECKPOINT
[+] TAP_CONNECT_FLAG_BACKFILL
[+] TAP_CONNECT_FLAG_DUMP
[+] TAP_CONNECT_FLAG_LIST_VBUCKETS
[+] TAP_CONNECT_FLAG_TAKEOVER_VBUCKETS
[+] TAP_CONNECT_REGISTERED_CLIENT
[+] TAP_CONNECT_REQUEST_KEYS_ONLY
[+] TAP_CONNECT_SUPPORT_ACK
[+] TAP_FLAG_ACK
[+] TAP_FLAG_NO_VALUE

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Header Files (49)

algorithm.h
allocators.h
analyze.h
auto.h
cache.h
callback.h
constants.h
delete.h
digest.h
dump.h
fetch.h
flush.h
flush_buffers.h
function.h
get.h
hash.h
hashkit.h
behavior.h (libhashkit/behavior.h)
configure.h (libhashkit/configure.h)
strerror.h (libhashkit/strerror.h)
types.h (libhashkit/types.h)
visibility.h (libhashkit/visibility.h)
behavior.h (libmemcached/behavior.h)
configure.h (libmemcached/configure.h)
strerror.h (libmemcached/strerror.h)
types.h (libmemcached/types.h)
visibility.h (libmemcached/visibility.h)
memcached.h
memcached_util.h
parse.h
ping.h
platform.h
pool.h
callback.h (protocol/callback.h)
protocol_binary.h
protocol_handler.h
quit.h
result.h
sasl.h
server.h
server_list.h
stats.h
storage.h
string.h
util.h
version.h (util/version.h)
verbosity.h
version.h
watchpoint.h

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Shared Libraries (4)

libhashkit.so.0.0.0
libmemcached.so.6.0.0
libmemcachedprotocol.so.0.0.0
libmemcachedutil.so.1.0.0

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