Binary compatibility report for the mongoDB library between 2.5.5 and 2.6.0 versions on x86

Test Info

Library Name	mongoDB
Version #1	2.5.5
Version #2	2.6.0
CPU Type	x86
GCC Version	4.6.1

Test Results

Total Header Files	1
Total Shared Libraries	115
Total Symbols / Types	809 / 584
Verdict	Incompatible (4.3%)

Problem Summary

	Severity	Count
Added Symbols	-	3
Removed Symbols	High	3
Problems with Data Types	High	2
	Medium	0
	Low	3
Problems with Symbols	High	1
	Medium	2
	Low	1
Problems with Constants	Low	0
Other Changes in Data Types	-	3

Added Symbols (3)

connpool.h, libclientdriver.so
namespace mongo
PoolForHost::kPoolSizeUnlimited [data]

error_codes.h, libbase.so
namespace mongo
ErrorCodes::isInterruption ( enum ErrorCodes::Error err ) [static]

ssl_options.h, libnetwork.so
namespace mongo
canonicalizeSSLServerOptions ( struct optionenvironment::Environment* params )

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Removed Symbols (3)

log.h, libfoundation.so
namespace mongo
rawOut ( StringData const& s )
setRawOutToStderr ( )

signal_handlers.h, libfoundation.so
namespace mongo
printStackAndExit ( int signalNum )

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Problems with Data Types, High Severity (2)

	Change	Effect
1	Size of this class has been increased from 44 bytes to 48 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 64 bytes to 68 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.

connpool.h
namespace mongo
[+] class DBConnectionPool (1)
[+] class PoolForHost (1)

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Problems with Symbols, High Severity (1)

	Change	Effect
1	Type of return value has been changed from char const* (4 bytes) to std::string (4 bytes).	1) The return value became passed in memory as the hidden first argument (address of the space on the stack provided by the caller) instead of the register and therefore the layout of parameter's stack has been shifted by 4 bytes. All the parameters will be incorrectly initialized by applications. 2) Applications will read the wrong memory block instead of the return value.

error_codes.h, libbase.so
namespace mongo
[+] ErrorCodes::errorString ( enum ErrorCodes::Error err ) [static] (1)

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Problems with Symbols, Medium Severity (2)

	Change	Effect
1	Size of this global data has been changed from 44 bytes to 48 bytes.	Applications will obtain a different value and execution may change.

	Change	Effect
1	The pointer level of return value has been decreased from 1 to 0.	Applications may try to access unallocated memory by the dereferencing of new return value and therefore cause a crash.

connpool.h, libclientdriver.so
namespace mongo
[+] pool [data] (1)

error_codes.h, libbase.so
namespace mongo
[+] ErrorCodes::errorString ( enum ErrorCodes::Error err ) [static] (1)

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Problems with Data Types, Low Severity (3)

	Change	Effect
1	Field _maxPoolSize has been added to this type.	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	Field _maxPoolSize has been added to this type.	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 11602 to 14032.	Applications may execute a wrong branch of code in the library and therefore change the behavior.

connpool.h
namespace mongo
[+] class DBConnectionPool (1)
[+] class PoolForHost (1)

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

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Problems with Symbols, Low Severity (1)

	Change	Effect
1	The initial value of this global data has been changed from 20000 to 1000000.	Applications will use an old value of this data instead of the new one. This may cause incorrect behavior of applications.

listen.h
namespace mongo
[+] DEFAULT_MAX_CONN [data] (1)

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Other Changes in Data Types (3)

	Change	Effect
1	The member InterruptedAtShutdown with value 11600 has been added.	No effect.
2	The member OutOfDiskSpace with value 14031 has been added.	No effect.
3	The member RemoteResultsUnavailable with value 83 has been added.	No effect.

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

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Header Files (1)

dbclient.h

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Shared Libraries (115)

liballtools.so
libauth_helpers.so
libauthcore.so
libauthmocks.so
libauthmongod.so
libauthmongos.so
libauthservercommon.so
libbackground_job.so
libbase.so
libbatch_write_types.so
libboost_filesystem.so
libboost_program_options.so
libboost_system.so
libboost_thread.so
libbson.so
libbson_template_evaluator.so
libbsondump_options.so
libclientandshell.so
libclientdriver.so
libcluster_op_impl.so
libcluster_write_op_conversion.so
libcluster_write_ops.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
libkey_generator.so
liblasterror.so
liblite_parsed_query.so
liblogger.so
libmath.so
libmd5.so
libmessage_server_port.so
libmetadata.so
libmongoadmin_options.so
libmongocommon.so
libmongod_options.so
libmongodandmongos.so
libmongodump_options.so
libmongodwebserver.so
libmongoexport_options.so
libmongofiles_options.so
libmongohasher.so
libmongoimport_options.so
libmongooplog_options.so
libmongorestore_options.so
libmongos_options.so
libmongoscore.so
libmongostat_options.so
libmongotop_options.so
libmurmurhash3.so
libnetwork.so
libntservice.so
liboptions_parser.so
liboptions_parser_init.so
libpath.so
libpcrecpp.so
libplatform.so
libprocessinfo.so
libquery.so
libquery_logger.so
libquery_planner.so
librange_deleter.so
libs2.so
libscripting.so
libserver_common.so
libserver_options.so
libserver_options_core.so
libserver_parameters.so
libserverauth.so
libserveronly.so
libshell_core.so
libshell_options.so
libshim_allocator.so
libshim_boost.so
libshim_pcrecpp.so
libshim_snappy.so
libshim_stemmer.so
libshim_v8.so
libshim_yaml.so
libsnappy.so
libspin_lock.so
libstacktrace.so
libstemmer.so
libstrings.so
libstringutils.so
libsynchronization.so
libthread_name.so
libtool_options.so
libupdate.so
libupdate_common.so
libupdate_driver.so
libupgrade.so
libv8.so
libversion.so
libworking_set.so
libyaml.so

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