Binary compatibility report for the libzipper library between 1.0.0 and 1.0.1 versions on x86

Test Info

Library Name	libzipper
Version #1	1.0.0
Version #2	1.0.1
CPU Architecture	x86
GCC Version	4.5

Test Results

Total Header Files	1
Total Shared Libraries	1
Total Symbols / Types	60 / 60
Verdict	Incompatible (30.00%)

Problem Summary

	Severity	Count
Added Symbols	-	4
Removed Symbols	High	2
Problems with Data Types	High	2
	Medium	0
	Low	0
Problems with Symbols	High	2
	Medium	0
	Low	0
Problems with Constants	Low	0

Added Symbols (4)

zipper.hh, libzipper.so.1.0.0
namespace zipper
FileReader::getModTime ( ) const
FileWriter::FileWriter [in-charge] ( std::string const& filename, mode_t createPermissions, timeval const& modTime )
FileWriter::FileWriter [not-in-charge] ( std::string const& filename, mode_t createPermissions, timeval const& modTime )
s_now [data]

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Removed Symbols (2)

zipper.hh, libzipper.so.1.0.0
namespace zipper
FileWriter::FileWriter [in-charge] ( std::string const& filename, mode_t createPermissions )
FileWriter::FileWriter [not-in-charge] ( std::string const& filename, mode_t createPermissions )

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Problems with Data Types, High Severity (2)

	Change	Effect
1	Pure virtual method CompressedFile::getModificationTime ( ) const has been added to this class.	1) Applications will not provide the implementation for this pure virtual method and therefore cause a crash in the library trying to call this method. 2) The layout of virtual 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) - 9 entries	Virtual Table (New) - 10 entries
0	(int (*)(...))0	(int (*)(...))0
4	(int (*)(...))(& typeinfo)	(int (*)(...))(& typeinfo)
8	CompressedFile::~CompressedFile	CompressedFile::~CompressedFile
12	CompressedFile::~CompressedFile	CompressedFile::~CompressedFile
16	__cxa_pure_virtual	__cxa_pure_virtual
20	__cxa_pure_virtual	__cxa_pure_virtual
24	__cxa_pure_virtual	__cxa_pure_virtual
28	__cxa_pure_virtual	__cxa_pure_virtual
32	__cxa_pure_virtual	__cxa_pure_virtual
36		__cxa_pure_virtual

	Change	Effect
1	Pure virtual method Reader::getModTime ( ) const has been added to this class.	1) Applications will not provide the implementation for this pure virtual method and therefore cause a crash in the library trying to call this method. 2) The layout of virtual 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) - 7 entries	Virtual Table (New) - 8 entries
0	(int (*)(...))0	(int (*)(...))0
4	(int (*)(...))(& typeinfo)	(int (*)(...))(& typeinfo)
8	Reader::~Reader	Reader::~Reader
12	Reader::~Reader	Reader::~Reader
16	__cxa_pure_virtual	__cxa_pure_virtual
20	__cxa_pure_virtual	__cxa_pure_virtual
24	__cxa_pure_virtual	__cxa_pure_virtual
28		__cxa_pure_virtual

zipper.hh
namespace zipper
[+] class CompressedFile (1)
[+] class Reader (1)

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Problems with Symbols, High Severity (2)

	Change	Effect
1	Parameters list has been changed.	The name of the appropriate symbol for this function on binary level has been changed from _ZN6zipper10FileWriterC1ERKSsj to _ZN6zipper10FileWriterC1ERKSsjRK7timeval. 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 _ZN6zipper10FileWriterC2ERKSsj to _ZN6zipper10FileWriterC2ERKSsjRK7timeval. This may cause "undefined reference" linker error in old client applications.

zipper.hh, libzipper.so.1.0.0
namespace zipper
[+] FileWriter::FileWriter [in-charge] ( std::string const& filename, mode_t createPermissions ) (1)
[+] FileWriter::FileWriter [not-in-charge] ( std::string const& filename, mode_t createPermissions ) (1)

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Header Files (1)

zipper.hh

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Shared Libraries (1)

libzipper.so.1.0.0

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