Binary compatibility report for the libtorrent (Rasterbar) library between 0.15.4 and 0.15.5 versions on x86

Test Info

Library Name	libtorrent (Rasterbar)
Version #1	0.15.4
Version #2	0.15.5
CPU Architecture	x86
GCC Version	4.5

Test Results

Total Header Files	1
Total Shared Libraries	1
Total Symbols / Types	892 / 596
Verdict	Incompatible (3.03%)

Problem Summary

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

Added Symbols (3)

session.hpp, libtorrent-rasterbar.so.6.0.0
namespace libtorrent
session::proxy ( ) const

[ symbol: _ZNK10libtorrent7session5proxyEv ]

session::set_proxy ( proxy_settings const& s )

[ symbol: _ZN10libtorrent7session9set_proxyERKNS_14proxy_settingsE ]

session_impl.hpp, libtorrent-rasterbar.so.6.0.0
namespace libtorrent::aux
session_impl::set_proxy ( libtorrent::proxy_settings const& s )

[ symbol: _ZN10libtorrent3aux12session_impl9set_proxyERKNS_14proxy_settingsE ]

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Problems with Data Types, High Severity (2)

tracker_manager.hpp
namespace libtorrent
[+] class tracker_connection (1)

	Change	Effect
1	Size of this class has been increased from 244 bytes to 252 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 neighbouring objects on the stack or heap. 2) The memory layout and size of subclasses will be changed..

[+] affected symbols (9)

tracker_connection::close ( )

This method is from 'tracker_connection' class.

tracker_connection::fail ( int code, char const* msg, int interval, int min_interval )

This method is from 'tracker_connection' class.

tracker_connection::fail_timeout ( )

This method is from 'tracker_connection' class.

tracker_connection::received_bytes ( int bytes )

This method is from 'tracker_connection' class.

tracker_connection::requester ( )

This method is from 'tracker_connection' class.

tracker_connection::sent_bytes ( int bytes )

This method is from 'tracker_connection' class.

tracker_connection::tracker_connection [in-charge] ( tracker_manager& man, tracker_request const& req, io_service& ios, boost::weak_ptr<request_callback> r )

This constructor is from 'tracker_connection' class.

tracker_connection::~tracker_connection [in-charge] ( )

This method is from 'tracker_connection' class.

tracker_manager::remove_request ( tracker_connection const* p1 )

1st parameter 'p1' (pointer) has base type 'tracker_connection'.

[+] class tracker_request (1)

	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.

[+] affected symbols (9)

request_callback::tracker_scrape_response ( tracker_request const& p1, int p2, int p3, int p4 )

1st parameter 'p1' (reference) has base type 'tracker_request'.

torrent::find_tracker ( tracker_request const& r )

1st parameter 'r' (reference) has base type 'tracker_request'.

torrent::tracker_request_error ( tracker_request const& r, int response_code, std::string const& str, int retry_interval )

1st parameter 'r' (reference) has base type 'tracker_request'.

torrent::tracker_request_timed_out ( tracker_request const& r )

1st parameter 'r' (reference) has base type 'tracker_request'.

torrent::tracker_response ( tracker_request const& r, address const& tracker_ip, std::list<boost::asio::ip::address>const& ip_list, std::vector<peer_entry>& e, int interval, int min_interval, int complete, int incomplete, address const& external_ip )

1st parameter 'r' (reference) has base type 'tracker_request'.

torrent::tracker_scrape_response ( tracker_request const& req, int complete, int incomplete, int downloaded )

1st parameter 'req' (reference) has base type 'tracker_request'.

torrent::tracker_warning ( tracker_request const& req, std::string const& msg )

1st parameter 'req' (reference) has base type 'tracker_request'.

tracker_connection::tracker_connection [in-charge] ( tracker_manager& man, tracker_request const& req, io_service& ios, boost::weak_ptr<request_callback> r )

2nd parameter 'req' (reference) has base type 'tracker_request'.

tracker_manager::queue_request ( io_service& ios, connection_queue& cc, tracker_request r, std::string const& auth, boost::weak_ptr<request_callback> c )

3rd parameter 'r' has type 'tracker_request'.

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Problems with Data Types, Medium Severity (2)

tracker_manager.hpp
namespace libtorrent
[+] class timeout_handler (1)

	Change	Effect
1	Pure virtual method timeout_handler::on_timeout ( boost::system::error_code const& ec ) has been added to this class instead of timeout_handler::on_timeout ( ).	Applications will provide an older method to the library instead of expected newely added virtual method. It may result in crash or incorrect behavior of applications.

[+] show v-table (old and new)

Offset	Virtual Table (Old) - 5 entries	Virtual Table (New) - 5 entries
0	(int (*)(...))0	(int (*)(...))0
4	(int (*)(...))(& typeinfo)	(int (*)(...))(& typeinfo)
8	__cxa_pure_virtual	__cxa_pure_virtual
12	timeout_handler::~timeout_handler	timeout_handler::~timeout_handler
16	timeout_handler::~timeout_handler	timeout_handler::~timeout_handler

[+] affected symbols (5)

timeout_handler::cancel ( )

Call of this method may result in crash or incorrect behavior of applications because some pure virtual method in v-table has been replaced by other.

timeout_handler::restart_read_timeout ( )

Call of this method may result in crash or incorrect behavior of applications because some pure virtual method in v-table has been replaced by other.

timeout_handler::set_timeout ( int completion_timeout, int read_timeout )

Call of this method may result in crash or incorrect behavior of applications because some pure virtual method in v-table has been replaced by other.

timeout_handler::timeout_handler [in-charge] ( io_service& str )

Call of this method may result in crash or incorrect behavior of applications because some pure virtual method in v-table has been replaced by other.

timeout_handler::~timeout_handler [in-charge] ( )

Call of this method may result in crash or incorrect behavior of applications because some pure virtual method in v-table has been replaced by other.

[+] class tracker_request (1)

	Change	Effect
1	Field redundant 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.