Binary compatibility report for the libmemcached library between 0.39 and 0.40 versions on x86

Test Info

Library Name	libmemcached
Version #1	0.39
Version #2	0.40
CPU Type	x86
GCC Version	4.6.1

Test Results

Total Header Files	45
Total Shared Libraries	4
Total Symbols / Types	146 / 173
Verdict	Incompatible (33.6%)

Problem Summary

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

Added Symbols (1)

memcached.h, libmemcached.so.5.0.0
memcached_reset_last_disconnected_server ( memcached_st* ptr )

to the top

Problems with Data Types, High Severity (1)

	Change	Effect
1	Size of this type has been changed from 17504 bytes to 17516 bytes.	Layout of parameter's stack of several functions has been changed and therefore parameters at higher positions in the stack may be incorrectly initialized by applications.

server.h
[+] struct memcached_server_st (1)

to the top

Problems with Data Types, Medium Severity (1)

server.h
[+] struct memcached_server_st (1)

	Change	Effect
1	Field io_wait_count 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.

[+] affected symbols (89)

memcached_add ( memcached_st* ptr, char const* key, size_t key_length, char const* value, size_t value_length, time_t expiration, uint32_t flags )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

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 )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

memcached_analyze ( memcached_st* memc, memcached_stat_st* memc_stat, enum memcached_return_t* error )

Field 'memc->servers' in 1st parameter 'memc' (pointer) has base type 'struct memcached_server_st'.

memcached_analyze_free ( memcached_analysis_st* p1 )

Field 'p1->root->last_disconnected_server' in 1st parameter 'p1' (pointer) has base type 'struct memcached_server_st'.

memcached_append ( memcached_st* ptr, char const* key, size_t key_length, char const* value, size_t value_length, time_t expiration, uint32_t flags )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

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 )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

memcached_autoeject ( memcached_st* ptr )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

memcached_behavior_get ( memcached_st* ptr, enum memcached_behavior_t const flag )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

memcached_behavior_get_distribution ( memcached_st* ptr )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

memcached_behavior_get_distribution_hash ( memcached_st* ptr )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

memcached_behavior_get_key_hash ( memcached_st* ptr )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

memcached_behavior_set ( memcached_st* ptr, enum memcached_behavior_t const flag, uint64_t data )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

memcached_behavior_set_distribution ( memcached_st* ptr, enum memcached_server_distribution_t type )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

memcached_behavior_set_distribution_hash ( memcached_st* ptr, enum memcached_hash_t type )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

memcached_behavior_set_key_hash ( memcached_st* ptr, enum memcached_hash_t type )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

memcached_callback_get ( memcached_st* ptr, enum memcached_callback_t const flag, enum memcached_return_t* error )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

memcached_callback_set ( memcached_st* ptr, enum memcached_callback_t const flag, void* data )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

memcached_cas ( memcached_st* ptr, char const* key, size_t key_length, char const* value, size_t value_length, time_t expiration, uint32_t flags, uint64_t cas )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

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 )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

memcached_clone ( memcached_st* clone, memcached_st const* ptr )

Field 'clone->last_disconnected_server' in 1st parameter 'clone' (pointer) has base type 'struct memcached_server_st'.

memcached_create ( memcached_st* ptr )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

memcached_decrement ( memcached_st* ptr, char const* key, size_t key_length, uint32_t offset, uint64_t* value )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

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 )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

memcached_decrement_with_initial ( memcached_st* ptr, char const* key, size_t key_length, uint64_t offset, uint64_t initial, time_t expiration, uint64_t* value )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

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 )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

memcached_delete ( memcached_st* ptr, char const* key, size_t key_length, time_t expiration )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

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 )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

memcached_dump ( memcached_st* ptr, memcached_dump_fn* function, void* context, uint32_t number_of_callbacks )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

memcached_fetch ( memcached_st* ptr, char* key, size_t* key_length, size_t* value_length, uint32_t* flags, enum memcached_return_t* error )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

memcached_fetch_execute ( memcached_st* ptr, memcached_execute_fn* callback, void* context, uint32_t number_of_callbacks )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

memcached_fetch_result ( memcached_st* ptr, memcached_result_st* result, enum memcached_return_t* error )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

memcached_flush ( memcached_st* ptr, time_t expiration )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

memcached_flush_buffers ( memcached_st* mem )

Field 'mem->servers' in 1st parameter 'mem' (pointer) has base type 'struct memcached_server_st'.

memcached_free ( memcached_st* ptr )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

memcached_get ( memcached_st* ptr, char const* key, size_t key_length, size_t* value_length, uint32_t* flags, enum memcached_return_t* error )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

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 )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

memcached_increment ( memcached_st* ptr, char const* key, size_t key_length, uint32_t offset, uint64_t* value )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

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 )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

memcached_increment_with_initial ( memcached_st* ptr, char const* key, size_t key_length, uint64_t offset, uint64_t initial, time_t expiration, uint64_t* value )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

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 )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

memcached_mget ( memcached_st* ptr, char const*const* keys, size_t const* key_length, size_t number_of_keys )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

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 )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

memcached_mget_execute ( memcached_st* ptr, char const*const* keys, size_t const* key_length, size_t const number_of_keys, memcached_execute_fn* callback, void* context, uint32_t const number_of_callbacks )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

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_fn* callback, void* context, uint32_t const number_of_callbacks )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

memcached_pool_create ( memcached_st* mmc, uint32_t initial, uint32_t max )

Field 'mmc->last_disconnected_server' in 1st parameter 'mmc' (pointer) has base type 'struct memcached_server_st'.

memcached_pool_destroy ( memcached_pool_st* pool )

Field 'retval->servers' in return value (pointer) has base type 'struct memcached_server_st'.

memcached_pool_pop ( memcached_pool_st* pool, bool block, enum memcached_return_t* rc )

Field 'retval->servers' in return value (pointer) has base type 'struct memcached_server_st'.

memcached_pool_push ( memcached_pool_st* pool, memcached_st* mmc )

Field 'mmc->last_disconnected_server' in 2nd parameter 'mmc' (pointer) has base type 'struct memcached_server_st'.

memcached_prepend ( memcached_st* ptr, char const* key, size_t key_length, char const* value, size_t value_length, time_t expiration, uint32_t flags )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

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 )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

memcached_push ( memcached_st* destination, memcached_st const* source )

Field 'destination->last_disconnected_server' in 1st parameter 'destination' (pointer) has base type 'struct memcached_server_st'.

memcached_quit ( memcached_st* ptr )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

memcached_replace ( memcached_st* ptr, char const* key, size_t key_length, char const* value, size_t value_length, time_t expiration, uint32_t flags )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

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 )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

memcached_server_add ( memcached_st* ptr, char const* hostname, in_port_t port )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

memcached_server_add_udp ( memcached_st* ptr, char const* hostname, in_port_t port )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

memcached_server_add_udp_with_weight ( memcached_st* ptr, char const* hostname, in_port_t port, uint32_t weight )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

memcached_server_add_unix_socket ( memcached_st* ptr, char const* filename )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

memcached_server_add_unix_socket_with_weight ( memcached_st* ptr, char const* filename, uint32_t weight )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

memcached_server_add_with_weight ( memcached_st* ptr, char const* hostname, in_port_t port, uint32_t weight )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

memcached_server_by_key ( memcached_st const* ptr, char const* key, size_t key_length, enum memcached_return_t* error )

Return value (pointer) has base type 'struct memcached_server_st'.

memcached_server_error ( memcached_server_instance_st ptr )

1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

memcached_server_error_reset ( memcached_server_st* ptr )

1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

memcached_server_free ( memcached_server_st* ptr )

1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

memcached_server_get_last_disconnect ( memcached_st const* ptr )

Return value (pointer) has base type 'struct memcached_server_st'.

memcached_server_instance_by_position ( memcached_st const* ptr, uint32_t server_key )

Return value (pointer) has base type 'struct memcached_server_st'.

memcached_server_list_append ( memcached_server_list_st ptr, char const* hostname, in_port_t port, enum memcached_return_t* error )

1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

memcached_server_list_append_with_weight ( memcached_server_list_st ptr, char const* hostname, in_port_t port, uint32_t weight, enum memcached_return_t* error )

1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

memcached_server_list_count ( memcached_server_list_st const ptr )

1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

memcached_server_list_free ( memcached_server_list_st ptr )

1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

memcached_server_name ( memcached_server_instance_st self )

1st parameter 'self' (pointer) has base type 'struct memcached_server_st'.

memcached_server_port ( memcached_server_instance_st self )

1st parameter 'self' (pointer) has base type 'struct memcached_server_st'.

memcached_server_push ( memcached_st* ptr, memcached_server_list_st const list )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

memcached_server_response_count ( memcached_server_instance_st self )

1st parameter 'self' (pointer) has base type 'struct memcached_server_st'.

memcached_servers_parse ( char const* server_strings )

Return value (pointer) has base type 'struct memcached_server_st'.

memcached_servers_reset ( memcached_st* ptr )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

memcached_set ( memcached_st* ptr, char const* key, size_t key_length, char const* value, size_t value_length, time_t expiration, uint32_t flags )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

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 )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

memcached_set_hashkit ( memcached_st* ptr, hashkit_st* hashk )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

memcached_set_memory_allocators ( memcached_st* ptr, memcached_malloc_fn mem_malloc, memcached_free_fn mem_free, memcached_realloc_fn mem_realloc, memcached_calloc_fn mem_calloc, void* context )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

memcached_set_user_data ( memcached_st* ptr, void* data )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

memcached_stat ( memcached_st* ptr, char* args, enum memcached_return_t* error )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

memcached_stat_free ( memcached_st const* p1, memcached_stat_st* p2 )

Field 'p2->root->last_disconnected_server' in 2nd parameter 'p2' (pointer) has base type 'struct memcached_server_st'.

memcached_stat_get_keys ( memcached_st const* ptr, memcached_stat_st* memc_stat, enum memcached_return_t* error )

Field 'memc_stat->root->last_disconnected_server' in 2nd parameter 'memc_stat' (pointer) has base type 'struct memcached_server_st'.

memcached_stat_get_value ( memcached_st const* ptr, memcached_stat_st* memc_stat, char const* key, enum memcached_return_t* error )

Field 'memc_stat->root->last_disconnected_server' in 2nd parameter 'memc_stat' (pointer) has base type 'struct memcached_server_st'.

memcached_stat_servername ( memcached_stat_st* memc_stat, char* args, char const* hostname, in_port_t port )

Field 'memc_stat->root->last_disconnected_server' in 1st parameter 'memc_stat' (pointer) has base type 'struct memcached_server_st'.

memcached_strerror ( memcached_st* ptr, enum memcached_return_t rc )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

memcached_verbosity ( memcached_st* ptr, uint32_t verbosity )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

memcached_version ( memcached_st* ptr )

Field 'ptr->last_disconnected_server' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.

to the top

Problems with Data Types, Low Severity (1)

server.h
[+] struct memcached_server_st (1)

	Change	Effect
1	Size of this type has been changed from 17504 bytes to 17516 bytes.	The fields or parameters of such data type may be incorrectly initialized or accessed by old client applications.

[+] affected symbols (83)

memcached_add ( memcached_st* ptr, char const* key, size_t key_length, char const* value, size_t value_length, time_t expiration, uint32_t flags )

Field 'ptr->servers' in 1st parameter 'ptr' (pointer) has base type 'struct memcached_server_st'.