Binary compatibility report for the libtorrent (Rasterbar) library between 0.16.8 and 0.16.9 versions on x86

Test Info

Library Name	libtorrent (Rasterbar)
Version #1	0.16.8
Version #2	0.16.9
CPU Type	x86
GCC Version	4.6.1

Test Results

Total Header Files	1
Total Shared Libraries	1
Total Symbols / Types	1049 / 669
Verdict	Incompatible (17.3%)

Problem Summary

	Severity	Count
Added Symbols	-	6
Removed Symbols	High	8
Problems with Data Types	High	1
	Medium	2
	Low	1
Problems with Symbols	High	6
	Medium	0
	Low	2
Problems with Constants	Low	0

Added Symbols (6)

storage.hpp, libtorrent-rasterbar.so.7.0.0
namespace libtorrent
default_storage::readv ( file::iovec_t const* bufs, int slot, int offset, int num_bufs, int flags )
default_storage::writev ( file::iovec_t const* buf, int slot, int offset, int num_bufs, int flags )
disabled_storage::readv ( file::iovec_t const* bufs, int slot, int offset, int num_bufs, int flags )
disabled_storage::writev ( file::iovec_t const* bufs, int slot, int offset, int num_bufs, int flags )
storage_interface::readv ( file::iovec_t const* bufs, int slot, int offset, int num_bufs, int flags )
storage_interface::writev ( file::iovec_t const* bufs, int slot, int offset, int num_bufs, int flags )

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Removed Symbols (8)

file.hpp, libtorrent-rasterbar.so.7.0.0
namespace libtorrent
file::finalize ( )

storage.hpp, libtorrent-rasterbar.so.7.0.0
namespace libtorrent
default_storage::readv ( file::iovec_t const* bufs, int slot, int offset, int num_bufs )
default_storage::writev ( file::iovec_t const* buf, int slot, int offset, int num_bufs )
disabled_storage::readv ( file::iovec_t const* bufs, int slot, int offset, int num_bufs )
disabled_storage::writev ( file::iovec_t const* bufs, int slot, int offset, int num_bufs )
piece_manager::async_finalize_file ( int file )
storage_interface::readv ( file::iovec_t const* bufs, int slot, int offset, int num_bufs )
storage_interface::writev ( file::iovec_t const* bufs, int slot, int offset, int num_bufs )

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Problems with Data Types, High Severity (1)

	Change	Effect
1	Size of this class has been increased from 784 bytes to 816 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.

torrent.hpp
namespace libtorrent
[+] class torrent (1)

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Problems with Symbols, High Severity (6)

	Change	Effect
1	Parameters list has been changed.	The name of the appropriate symbol for this function on binary level has been changed from _ZN10libtorrent15default_storage5readvEPK5ioveciii to _ZN10libtorrent15default_storage5readvEPK5ioveciiii. 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 _ZN10libtorrent15default_storage6writevEPK5ioveciii to _ZN10libtorrent15default_storage6writevEPK5ioveciiii. 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 _ZN10libtorrent16disabled_storage5readvEPK5ioveciii to _ZN10libtorrent16disabled_storage5readvEPK5ioveciiii. 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 _ZN10libtorrent16disabled_storage6writevEPK5ioveciii to _ZN10libtorrent16disabled_storage6writevEPK5ioveciiii. 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 _ZN10libtorrent17storage_interface5readvEPK5ioveciii to _ZN10libtorrent17storage_interface5readvEPK5ioveciiii. 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 _ZN10libtorrent17storage_interface6writevEPK5ioveciii to _ZN10libtorrent17storage_interface6writevEPK5ioveciiii. This may cause "undefined reference" linker error in old client applications.

storage.hpp, libtorrent-rasterbar.so.7.0.0
namespace libtorrent
[+] default_storage::readv ( file::iovec_t const* bufs, int slot, int offset, int num_bufs ) (1)
[+] default_storage::writev ( file::iovec_t const* buf, int slot, int offset, int num_bufs ) (1)
[+] disabled_storage::readv ( file::iovec_t const* bufs, int slot, int offset, int num_bufs ) (1)
[+] disabled_storage::writev ( file::iovec_t const* bufs, int slot, int offset, int num_bufs ) (1)
[+] storage_interface::readv ( file::iovec_t const* bufs, int slot, int offset, int num_bufs ) (1)
[+] storage_interface::writev ( file::iovec_t const* bufs, int slot, int offset, int num_bufs ) (1)

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Problems with Data Types, Medium Severity (2)

	Change	Effect
1	Virtual method storage_interface::readv ( file::iovec_t const, int, int, int, int ) has been added to this class instead of storage_interface::readv ( file::iovec_t const, int, int, int ).	Applications will pass parameters of older replaced method to newly added virtual method. This may result in crash or incorrect behavior of applications.
2	Virtual method storage_interface::writev ( file::iovec_t const, int, int, int, int ) has been added to this class instead of storage_interface::writev ( file::iovec_t const, int, int, int ).	Applications will pass parameters of older replaced method to newly added virtual method. This may result in crash or incorrect behavior of applications.

Offset	Virtual Table (Old) - 24 entries	Virtual Table (New) - 24 entries
0	(int (*)(...))0	(int (*)(...))0
4	(int (*)(...))(& typeinfo)	(int (*)(...))(& typeinfo)
8	__cxa_pure_virtual	__cxa_pure_virtual
12	__cxa_pure_virtual	__cxa_pure_virtual
16	storage_interface::readv	storage_interface::readv
20	storage_interface::writev	storage_interface::writev
24	storage_interface::hint_read	storage_interface::hint_read
28	__cxa_pure_virtual	__cxa_pure_virtual
32	__cxa_pure_virtual	__cxa_pure_virtual
36	__cxa_pure_virtual	__cxa_pure_virtual
40	storage_interface::sparse_end	storage_interface::sparse_end
44	__cxa_pure_virtual	__cxa_pure_virtual
48	__cxa_pure_virtual	__cxa_pure_virtual
52	__cxa_pure_virtual	__cxa_pure_virtual
56	__cxa_pure_virtual	__cxa_pure_virtual
60	__cxa_pure_virtual	__cxa_pure_virtual
64	__cxa_pure_virtual	__cxa_pure_virtual
68	__cxa_pure_virtual	__cxa_pure_virtual
72	__cxa_pure_virtual	__cxa_pure_virtual
76	__cxa_pure_virtual	__cxa_pure_virtual
80	storage_interface::finalize_file	storage_interface::finalize_file
84	storage_interface::clear_error	storage_interface::clear_error
88	~storage_interface	~storage_interface
92	~storage_interface	~storage_interface

storage.hpp
namespace libtorrent
[+] class storage_interface (2)

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Problems with Data Types, Low Severity (1)

	Change	Effect
1	Type of field m_time_critical_pieces has been changed from std::list<torrent::time_critical_piece> (8 bytes) to std::deque<torrent::time_critical_piece> (40 bytes).	Size of the inclusive type has been changed.

torrent.hpp
namespace libtorrent
[+] class torrent (1)

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Problems with Symbols, Low Severity (2)

	Change	Effect
1	The default argument of 1st parameter user_agent_ has been changed from "libtorrent/0.16.8.0" to "libtorrent/0.16.9.0".	Applications will pass an old default (compile-time) argument that may not be properly handled anymore. This may result in crash or incorrect behavior of applications.

	Change	Effect
1	The default argument of 1st parameter user_agent_ has been changed from "libtorrent/0.16.8.0" to "libtorrent/0.16.9.0".	Applications will pass an old default (compile-time) argument that may not be properly handled anymore. This may result in crash or incorrect behavior of applications.

session_settings.hpp, libtorrent-rasterbar.so.7.0.0
namespace libtorrent
[+] session_settings::session_settings [in-charge] ( std::string const& user_agent_ ) (1)
[+] session_settings::session_settings [not-in-charge] ( std::string const& user_agent_ ) (1)

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Header Files (1)

torrent.hpp

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Shared Libraries (1)

libtorrent-rasterbar.so.7.0.0

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