Binary compatibility report for the mongoDB library between 1.5.1 and 1.5.2 versions on x86

Test Info

Library Name	mongoDB
Version #1	1.5.1
Version #2	1.5.2
CPU Architecture	x86
GCC Version	4.5

Test Results

Total Header Files	1
Total Shared Libraries	1
Total Symbols / Types	373 / 295
Verdict	Incompatible (12.73%)

Problem Summary

	Severity	Count
Added Symbols	-	11
Removed Symbols	High	0
Problems with Data Types	High	3
	Medium	3
	Low	4
Problems with Symbols	High	0
	Medium	0
	Low	0
Problems with Constants	Low	0
Other Changes	-	0

Added Symbols (11)

dbclientcursor.h, libmongoclient.so
namespace mongo
DBClientCursor::attach ( ShardConnection* conn )

goodies.h, libmongoclient.so
namespace mongo
setThreadName ( char const* name )

lasterror.h, libmongoclient.so
namespace mongo
LastErrorHolder::initThread ( )

log.h, libmongoclient.so
namespace mongo
tlogLevel [data]

message.h, libmongoclient.so
namespace mongo
MessagingPort::send ( std::vector<std::pair<char*, int> >const& data, char const* context )

mutex.h, libmongoclient.so
namespace mongo
mutexDebugger [data]
MutexDebugger::programEnding ( )

sp_counted_impl.hpp, libmongoclient.so
namespace boost::detail
sp_counted_impl_pd<boost::thread_specific_ptr<std::set<char const*> >::delete_data*,do_heap_delete<boost::thread_specific_ptr<std::set<char const*> >::delete_data> >::dispose ( )
sp_counted_impl_pd<boost::thread_specific_ptr<std::set<char const*> >::delete_data*,do_heap_delete<boost::thread_specific_ptr<std::set<char const*> >::delete_data> >::get_deleter ( sp_typeinfo const& ti )
sp_counted_impl_pd<boost::thread_specific_ptr<std::set<char const*> >::delete_data*,do_heap_delete<boost::thread_specific_ptr<std::set<char const*> >::delete_data> >::~sp_counted_impl_pd [in-charge-deleting] ( )
sp_counted_impl_pd<boost::thread_specific_ptr<std::set<char const*> >::delete_data*,do_heap_delete<boost::thread_specific_ptr<std::set<char const*> >::delete_data> >::~sp_counted_impl_pd [in-charge] ( )

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Problems with Data Types, High Severity (3)

	Change	Effect
1	Virtual method Nullstream::flush ( Tee* t ) has been added to this class.	The layout of v-table has been changed. Call of any virtual method at higher position in this class or its subclasses may result in crash or incorrect behavior of applications.
2	Virtual method Nullstream::operator<< ( Tee* tee ) has been added to this class.	The layout of v-table has been changed. Call of any virtual method at higher position in this class or its subclasses may result in crash or incorrect behavior of applications.

Offset	Virtual Table (Old) - 22 entries	Virtual Table (New) - 23 entries
0	(int (*)(...))0	(int (*)(...))0
4	(int (*)(...))(& typeinfo)	(int (*)(...))(& typeinfo)
8	~Nullstream	Nullstream::operator<<
12	~Nullstream	~Nullstream
16	Nullstream::operator<<	~Nullstream
20	Nullstream::operator<<	Nullstream::operator<<
24	Nullstream::operator<<	Nullstream::operator<<
28	Nullstream::operator<<	Nullstream::operator<<
32	Nullstream::operator<<	Nullstream::operator<<
36	Nullstream::operator<<	Nullstream::operator<<
40	Nullstream::operator<<	Nullstream::operator<<
44	Nullstream::operator<<	Nullstream::operator<<
48	Nullstream::operator<<	Nullstream::operator<<
52	Nullstream::operator<<	Nullstream::operator<<
56	Nullstream::operator<<	Nullstream::operator<<
60	Nullstream::operator<<	Nullstream::operator<<
64	Nullstream::operator<<	Nullstream::operator<<
68	Nullstream::operator<<	Nullstream::operator<<
72	Nullstream::operator<<	Nullstream::operator<<
76	Nullstream::operator<<	Nullstream::operator<<
80	Nullstream::operator<<	Nullstream::operator<<
84	Nullstream::flush	Nullstream::operator<<
88		Nullstream::flush

	Change	Effect
1	Size of this class has been changed from 140 bytes to 152 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.

log.h
namespace mongo
[+] class Nullstream (2)

message.h
namespace mongo
[+] class Message (1)

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Problems with Data Types, Medium Severity (3)

	Change	Effect
1	Pure virtual method DBException::getCode ( ) const has been added to this class instead of DBException::getCode ( ).	Applications will provide an older method to the library instead of expected newely added virtual method. This may result in crash or incorrect behavior of applications.

Offset	Virtual Table (Old) - 7 entries	Virtual Table (New) - 7 entries
0	(int (*)(...))0	(int (*)(...))0
4	(int (*)(...))(& typeinfo)	(int (*)(...))(& typeinfo)
8	~DBException	~DBException
12	~DBException	~DBException
16	__cxa_pure_virtual	__cxa_pure_virtual
20	DBException::toString	DBException::toString
24	__cxa_pure_virtual	__cxa_pure_virtual

	Change	Effect
1	The layout of v-table has been changed for unknown reason.	Call of any method in this class may result in crash or incorrect behavior of applications.

Offset	Virtual Table (Old) - 22 entries	Virtual Table (New) - 23 entries
0	(int (*)(...))0	(int (*)(...))0
4	(int (*)(...))(& typeinfo)	(int (*)(...))(& typeinfo)
8	~Logstream	Logstream::operator<<
12	~Logstream	~Logstream
16	Logstream::operator<<	~Logstream
20	Logstream::operator<<	Logstream::operator<<
24	Logstream::operator<<	Logstream::operator<<
28	Logstream::operator<<	Logstream::operator<<
32	Logstream::operator<<	Logstream::operator<<
36	Logstream::operator<<	Logstream::operator<<
40	Logstream::operator<<	Logstream::operator<<
44	Logstream::operator<<	Logstream::operator<<
48	Logstream::operator<<	Logstream::operator<<
52	Logstream::operator<<	Logstream::operator<<
56	Logstream::operator<<	Logstream::operator<<
60	Logstream::operator<<	Logstream::operator<<
64	Logstream::operator<<	Logstream::operator<<
68	Logstream::operator<<	Logstream::operator<<
72	Logstream::operator<<	Logstream::operator<<
76	Logstream::operator<<	Logstream::operator<<
80	Logstream::operator<<	Logstream::operator<<
84	Logstream::flush	Logstream::operator<<
88		Logstream::flush

	Change	Effect
1	Type of field data has been changed from MsgData* (4 bytes) to std::vector<std::pair<char*,int> > (12 bytes).	1) This field may be incorrectly initialized or accessed by applications. 2) Size of the inclusive type has changed.

assert_util.h
namespace mongo
[+] class DBException (1)

log.h
namespace mongo
[+] class Logstream (1)

message.h
namespace mongo
[+] class Message (1)

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Problems with Data Types, Low Severity (4)

	Change	Effect
1	Size of this type has been changed from 84 bytes to 228 bytes.	The fields or parameters of such data type may be incorrectly initialized or accessed by old client applications.
2	Size of field _m has been changed from 32 bytes to 176 bytes.	Size of the inclusive type has changed.

	Change	Effect
1	Field _buf 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.
2	The pointer level of field data has been decreased from 1 to 0.	The library functions will treat the value of this field as the lower-dimension array and will not read all elements. This may change the behavior of applications.

concurrency.h
namespace mongo
[+] class MongoMutex (2)

message.h
namespace mongo
[+] class Message (2)

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Header Files (1)

dbclient.h

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Shared Libraries (1)

libmongoclient.so

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