Binary compatibility report for the libdmtx library between 0.5.0 and 0.5.1 versions on x86

Test Info

Library Name	libdmtx
Version #1	0.5.0
Version #2	0.5.1
CPU Type	x86
GCC Version	4.6.1

Test Results

Total Header Files	1
Total Shared Libraries	1
Total Symbols / Types	66 / 62
Verdict	Incompatible (4.5%)

Problem Summary

	Severity	Count
Added Symbols	-	4
Removed Symbols	High	0
Problems with Data Types	High	0
	Medium	0
	Low	1
Problems with Symbols	High	2
	Medium	4
	Low	2
Problems with Constants	Low	3
Other Changes in Constants	-	5

Added Symbols (4)

dmtx.h, libdmtx.so.0.0.0
dmtxDecodeMosaicRegion ( DmtxDecode* dec, DmtxRegion* reg, int fix )
dmtxTimeAdd ( DmtxTime t, long msec )
dmtxTimeExceeded ( DmtxTime timeout )
dmtxTimeNow ( )

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Problems with Symbols, High Severity (2)

	Change	Effect
1	Type of return value has been changed from DmtxPixel (3 bytes) to void.	1) Applications will read the wrong memory block instead of the return value. 2) Layout of parameter's stack has been shifted by 4 bytes because the hidden first argument, that is used to pass the return value, has been removed. All the parameters will be incorrectly initialized by applications.
2	Parameter rgb of type unsigned char* has been added to the calling stack at the middle position.	Layout of parameter's stack has been changed and therefore parameters at higher positions in the stack may be incorrectly initialized by applications.

dmtx.h, libdmtx.so.0.0.0
[+] dmtxPixelFromImage ( DmtxImage* img, int x, int y ) (2)

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Problems with Symbols, Medium Severity (4)

	Change	Effect
1	Base type of 2nd parameter pxl has been changed from struct DmtxPixel_struct (3 bytes) to unsigned char (1 byte).	This parameter may be incorrectly initialized by applications.

	Change	Effect
1	Parameter timeout of type DmtxTime* has been added to the calling stack.	This parameter will not be initialized by old clients.

	Change	Effect
1	Parameter symbolFormat of type int has been added to the calling stack.	This parameter will not be initialized by old clients.

	Change	Effect
1	Base type of 1st parameter pxl has been changed from struct DmtxPixel_struct (3 bytes) to unsigned char (1 byte).	This parameter may be incorrectly initialized by applications.

dmtx.h, libdmtx.so.0.0.0
[+] dmtxColor3FromPixel ( DmtxColor3* color, DmtxPixel* pxl ) (1)
[+] dmtxDecodeFindNextRegion ( DmtxDecode* decode ) (1)
[+] dmtxMessageMalloc ( int sizeIdx ) (1)
[+] dmtxPixelFromColor3 ( DmtxPixel* pxl, DmtxColor3* color ) (1)

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Problems with Data Types, Low Severity (1)

	Change	Effect
1	Base type of field pxl has been changed from struct DmtxPixel_struct (3 bytes) to unsigned char (1 byte).	Possible access of applications to incorrect memory through the pointer.

dmtx.h
[+] struct DmtxImage_struct (1)

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Problems with Symbols, Low Severity (2)

	Change	Effect
1	2nd parameter pxl has been renamed to rgb.	Renaming of a parameter may indicate a change in its semantic meaning.

	Change	Effect
1	1st parameter pxl has been renamed to rgb.	Renaming of a parameter may indicate a change in its semantic meaning.

dmtx.h, libdmtx.so.0.0.0
[+] dmtxColor3FromPixel ( DmtxColor3* color, DmtxPixel* pxl ) (1)
[+] dmtxPixelFromColor3 ( DmtxPixel* pxl, DmtxColor3* color ) (1)

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Problems with Constants, Low Severity (3)

	Change	Effect
1	The value of constant DMTX_REGION_EOF has been changed from -1 to 3.	Applications will pass an old value of this constant as the parameter to the new-version library functions, that expect a new one. This may result in crash of incorrect behavior of applications.

	Change	Effect
1	The value of constant DMTX_REGION_FOUND has been changed from 1 to 0.	Applications will pass an old value of this constant as the parameter to the new-version library functions, that expect a new one. This may result in crash of incorrect behavior of applications.

	Change	Effect
1	The value of constant DMTX_REGION_NOT_FOUND has been changed from 0 to 1.	Applications will pass an old value of this constant as the parameter to the new-version library functions, that expect a new one. This may result in crash of incorrect behavior of applications.

dmtx.h
[+] DMTX_REGION_EOF
[+] DMTX_REGION_FOUND
[+] DMTX_REGION_NOT_FOUND

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Other Changes in Constants (5)

	Change	Effect
1	The constant DMTX_FORMAT_MATRIX with value 0 has been added.	No effect.

	Change	Effect
1	The constant DMTX_FORMAT_MOSAIC with value 1 has been added.	No effect.

	Change	Effect
1	The constant DMTX_REGION_TIMEOUT with value 2 has been added.	No effect.

	Change	Effect
1	The constant M_PI with value 3.14159265358979323846 has been added.	No effect.

	Change	Effect
1	The constant M_PI_2 with value 1.57079632679489661923 has been added.	No effect.

dmtx.h
[+] DMTX_FORMAT_MATRIX
[+] DMTX_FORMAT_MOSAIC
[+] DMTX_REGION_TIMEOUT
[+] M_PI
[+] M_PI_2

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Header Files (1)

dmtx.h

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Shared Libraries (1)

libdmtx.so.0.0.0

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