Binary compatibility report for the mongoDB library between 2.5.3 and 2.5.4 versions on x86

Test Info

Library Name	mongoDB
Version #1	2.5.3
Version #2	2.5.4
CPU Type	x86
GCC Version	4.6.1

Test Results

Total Header Files	1
Total Shared Libraries	86
Total Symbols / Types	838 / 601
Verdict	Incompatible (18.8%)

Problem Summary

	Severity	Count
Added Symbols	-	6
Removed Symbols	High	16
Problems with Data Types	High	4
	Medium	10
	Low	6
Problems with Symbols	High	3
	Medium	0
	Low	0
Problems with Constants	Low	0
Other Changes in Data Types	-	9

Added Symbols (6)

background.h, libbackground_job.so
namespace mongo
BackgroundJob::cancel ( )
PeriodicTask::startRunningPeriodicTasks ( ) [static]
PeriodicTask::stopRunningPeriodicTasks ( int gracePeriodMillis ) [static]

dbclientinterface.h, libclientdriver.so
namespace mongo
DBClientWithCommands::_authMongoCR ( std::string const& dbname, std::string const& username, std::string const& pwd, BSONObj* info, bool digestPassword )
DBClientWithCommands::_authX509 ( std::string const& dbname, std::string const& username, BSONObj* info )

sasl_client_authenticate.h, libclientdriver.so
namespace mongo
saslCommandUserDBFieldName [data]

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Removed Symbols (16)

background.h, libmongocommon.so
namespace mongo
PeriodicTask::Runner::add ( PeriodicTask* task )
PeriodicTask::Runner::name ( ) const
PeriodicTask::Runner::remove ( PeriodicTask* task )
PeriodicTask::Runner::run ( )
PeriodicTask::Runner::~Runner [in-charge-deleting] ( )
PeriodicTask::Runner::~Runner [in-charge] ( )
PeriodicTask::theRunner [data]
vtable for PeriodicTask::Runner [data]

dbclientinterface.h, libmongocommon.so
namespace mongo
DBClientWithCommands::_authMongoCR ( std::string const& dbname, std::string const& username, std::string const& pwd, std::string& errmsg, bool digestPassword )
DBClientWithCommands::_authX509 ( std::string const& dbname, std::string const& username, std::string& errmsg )

option_section.h, liboptions_parser.so
namespace mongo::optionenvironment
OptionSection::addOption ( OptionDescription const& option )
OptionSection::addPositionalOption ( PositionalOptionDescription const& positionalOption )
OptionSection::getBoostOptions ( boost::program_options::options_description* boostOptions, bool visibleOnly, bool includeDefaults ) const

sasl_client_authenticate.h, libmongocommon.so
namespace mongo
saslCommandUserSourceFieldName [data]

time_support.h, libfoundation.so
namespace mongo
extractMillisPortion ( long long millisSinceEpoch )
millisToTimeT ( long long millis )

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Problems with Data Types, High Severity (4)

	Change	Effect
1	Size of this class has been increased from 148 bytes to 156 bytes.	1) An object of this class can be allocated by the applications and old size will be hardcoded at the compile time. Call of any exported constructor will break the memory of neighboring objects on the stack or heap. 2) The memory layout and size of subclasses will be changed.

	Change	Effect
1	Size of this class has been changed from 56 bytes to 64 bytes.	1) The class has only inline or auto-generated constructors which will be copied to applications at compile time and will allocate an older memory layout. Call of any exported method of this class may access a memory outside the allocated objects or inside the older memory structure and result in crash or incorrect behavior of applications. 2) The memory layout and size of subclasses will be changed.

	Change	Effect
1	Size of this class has been changed from 136 bytes to 144 bytes.	1) The class has only inline or auto-generated constructors which will be copied to applications at compile time and will allocate an older memory layout. Call of any exported method of this class may access a memory outside the allocated objects or inside the older memory structure and result in crash or incorrect behavior of applications. 2) The memory layout and size of subclasses will be changed.

	Change	Effect
1	Size of this class has been increased from 136 bytes to 144 bytes.	1) An object of this class can be allocated by the applications and old size will be hardcoded at the compile time. Call of any exported constructor will break the memory of neighboring objects on the stack or heap. 2) The memory layout and size of subclasses will be changed.

dbclient_rs.h
namespace mongo
[+] class DBClientReplicaSet (1)

dbclientinterface.h
namespace mongo
[+] class DBClientBase (1)
[+] class DBClientConnection (1)

syncclusterconnection.h
namespace mongo
[+] class SyncClusterConnection (1)

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Problems with Symbols, High Severity (3)

	Change	Effect
1	Type of return value has been changed from BackgroundJob& (12 bytes) to void.	1) Applications will read the wrong memory block instead of the return value. 2) Layout of parameter's stack has been shifted by 4 bytes because the hidden first argument, that is used to pass the return value, has been removed. All the parameters will be incorrectly initialized by applications.

	Change	Effect
1	Parameters list has been changed.	The name of the appropriate symbol for this function on binary level has been changed from _ZN5mongo20DBClientWithCommands12_authMongoCRERKSsS2_S2_RSsb to _ZN5mongo20DBClientWithCommands12_authMongoCRERKSsS2_S2_PNS_7BSONObjEb. This may cause "undefined reference" linker error in old client applications.

	Change	Effect
1	Parameters list has been changed.	The name of the appropriate symbol for this function on binary level has been changed from _ZN5mongo20DBClientWithCommands9_authX509ERKSsS2_RSs to _ZN5mongo20DBClientWithCommands9_authX509ERKSsS2_PNS_7BSONObjE. This may cause "undefined reference" linker error in old client applications.

background.h, libmongocommon.so
namespace mongo
[+] BackgroundJob::go ( ) (1)

dbclientinterface.h, libmongocommon.so
namespace mongo
[+] DBClientWithCommands::_authMongoCR ( std::string const& dbname, std::string const& username, std::string const& pwd, std::string& errmsg, bool digestPassword ) (1)
[+] DBClientWithCommands::_authX509 ( std::string const& dbname, std::string const& username, std::string& errmsg ) (1)

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Problems with Data Types, Medium Severity (10)

	Change	Effect
1	Value of member DuplicateKey has been changed from 3 to 11000.	Applications may execute a wrong branch of code in the library and therefore change the behavior.

	Change	Effect
1	Type of field clusterAuthMode has been changed from std::string to AtomicInt32 of different format.	This field may be incorrectly initialized or accessed by applications.
2	The relative position of field argvArray has been changed from 31 to 30.	Applications will access incorrect memory when attempting to access this field.
3	The relative position of field clusterAuthMode has been changed from 25 to 32.	Applications will access incorrect memory when attempting to access this field.
4	The relative position of field experimental has been changed from 29 to 28.	Applications will access incorrect memory when attempting to access this field.
5	The relative position of field isHttpInterfaceEnabled has been changed from 26 to 25.	Applications will access incorrect memory when attempting to access this field.
6	The relative position of field leaderProc has been changed from 28 to 27.	Applications will access incorrect memory when attempting to access this field.
7	The relative position of field parentProc has been changed from 27 to 26.	Applications will access incorrect memory when attempting to access this field.
8	The relative position of field parsedOpts has been changed from 32 to 31.	Applications will access incorrect memory when attempting to access this field.
9	The relative position of field started has been changed from 30 to 29.	Applications will access incorrect memory when attempting to access this field.

error_codes.h
namespace mongo
[+] enum ErrorCodes::Error (1)

server_options.h
namespace mongo
[+] class ServerGlobalParams (9)

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Problems with Data Types, Low Severity (6)

	Change	Effect
1	Field _maxWireVersion 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 _minWireVersion 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.

	Change	Effect
1	Value of member MaxError has been changed from 67 to 11001.	Applications may execute a wrong branch of code in the library and therefore change the behavior.
2	Name of member with value 54 has been changed from ImmutableIdField to NotSingleValueField.	Applications may execute a wrong branch of code in the library and therefore change the behavior.
3	Name of member with value 66 has been changed from ImmutableShardKeyField to ImmutableField.	Applications may execute a wrong branch of code in the library and therefore change the behavior.

	Change	Effect
1	Field sslAllowInvalidCertificates 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.

dbclientinterface.h
namespace mongo
[+] class DBClientBase (2)

error_codes.h
namespace mongo
[+] enum ErrorCodes::Error (3)

ssl_options.h
namespace mongo
[+] class SSLGlobalParams (1)

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Other Changes in Data Types (9)

	Change	Effect
1	Type of field _status has been changed from boost::shared_ptr<struct BackgroundJob::JobStatus> (8 bytes) to boost::scoped_ptr<struct BackgroundJob::JobStatus>const (4 bytes).	No effect.

	Change	Effect
1	The member AuthSchemaIncompatible with value 69 has been added.	No effect.
2	The member CannotCreateIndex with value 67 has been added.	No effect.
3	The member IndexAlreadyExists with value 68 has been added.	No effect.
4	The member InvalidOptions with value 72 has been added.	No effect.
5	The member OBSOLETE_DuplicateKey with value 3 has been added.	No effect.
6	The member ReplicaSetNotFound with value 71 has been added.	No effect.
7	The member ShardNotFound with value 70 has been added.	No effect.

	Change	Effect
1	Size of field _client has been changed from 56 bytes to 64 bytes.	No effect.

background.h
namespace mongo
[+] class BackgroundJob (1)

error_codes.h
namespace mongo
[+] enum ErrorCodes::Error (7)

gridfs.h
namespace mongo
[+] class GridFS (1)

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Header Files (1)

dbclient.h

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Shared Libraries (86)

liballtools.so
libauth_helpers.so
libauthcore.so
libauthmocks.so
libauthmongod.so
libauthmongos.so
libauthservercommon.so
libbase.so
libbatched_write_ops.so
libboost_filesystem.so
libboost_program_options.so
libboost_system.so
libboost_thread.so
libbson.so
libbson_template_evaluator.so
libclientandshell.so
libcmdline_utils.so
libcoding.so
libcommon.so
libcoredb.so
libcoreserver.so
libcoreshard.so
libdefaultversion.so
libexec.so
libexpressions.so
libexpressions_geo.so
libexpressions_text.so
libexpressions_where.so
libfail_point.so
libfoundation.so
libftsmongod.so
libftsmongos.so
libgeometry.so
libgeoparser.so
libgeoquery.so
libgridfs.so
libindex_bounds.so
libindex_set.so
liblogger.so
libmath.so
libmd5.so
libmessage_server_port.so
libmetadata.so
libmongocommon.so
libmongodandmongos.so
libmongodwebserver.so
libmongohasher.so
libmongoscore.so
libmurmurhash3.so
libntservice.so
liboptions_parser.so
libpath.so
libpcrecpp.so
libplatform.so
libprocessinfo.so
libquery.so
libquery_planner.so
librange_deleter.so
libs2.so
libscripting.so
libserver_common.so
libserver_options.so
libserver_parameters.so
libserverauth.so
libserveronly.so
libshim_allocator.so
libshim_boost.so
libshim_pcrecpp.so
libshim_snappy.so
libshim_stemmer.so
libshim_v8.so
libsnappy.so
libstacktrace.so
libstemmer.so
libstrings.so
libstringutils.so
libsynchronization.so
libthread_name.so
libupdate.so
libupdate_common.so
libupdate_driver.so
libupgrade.so
libv8.so
libworking_set.so
libwrite_op_impl.so
libwrite_ops.so

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