Binary compatibility report for the JBIG-KIT library between 1.6 and 2.0 versions on x86

Test Info

Library Name	JBIG-KIT
Version #1	1.6
Version #2	2.0
CPU Type	x86
GCC Version	4.6.1

Test Results

Total Header Files	1
Total Shared Libraries	1
Total Symbols / Types	23 / 47
Verdict	Incompatible (23.9%)

Problem Summary

	Severity	Count
Added Symbols	-	14
Removed Symbols	High	0
Problems with Data Types	High	0
	Medium	4
	Low	3
Problems with Symbols	High	0
	Medium	1
	Low	4
Problems with Constants	Low	12
Other Changes in Constants	-	4

Added Symbols (14)

jbig85.h, libjbig85.so
jbg85_dec_end ( struct jbg85_dec_state* s )
jbg85_dec_in ( struct jbg85_dec_state* s, unsigned char* data, size_t len, size_t* cnt )
jbg85_dec_init ( struct jbg85_dec_state* s, unsigned char* buf, size_t buflen, int(*line_out)(struct jbg85_dec_state const*, unsigned char*, size_t, unsigned long, void*), void* file )
jbg85_enc_abort ( struct jbg85_enc_state* s )
jbg85_enc_init ( struct jbg85_enc_state* s, unsigned long x0, unsigned long y0, void(*data_out)(unsigned char*, size_t, void*), void* file )
jbg85_enc_lineout ( struct jbg85_enc_state* s, unsigned char* line, unsigned char* prevline, unsigned char* prevprevline )
jbg85_enc_newlen ( struct jbg85_enc_state* s, unsigned long y0 )
jbg85_enc_options ( struct jbg85_enc_state* s, int options, unsigned long l0, int mx )
jbg85_strerror ( int errnum )

jbig_ar.h, libjbig85.so
arith_decode ( struct jbg_ardec_state* s, int cx )
arith_decode_init ( struct jbg_ardec_state* s, int reuse_st )
arith_encode ( struct jbg_arenc_state* s, int cx, int pix )
arith_encode_flush ( struct jbg_arenc_state* s )
arith_encode_init ( struct jbg_arenc_state* s, int reuse_st )

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Problems with Data Types, Medium Severity (4)

	Change	Effect
1	The relative position of field ct has been changed from 3 to 5.	Applications will access incorrect memory when attempting to access this field.
2	The relative position of field pscd_end has been changed from 5 to 4.	Applications will access incorrect memory when attempting to access this field.
3	The relative position of field pscd_ptr has been changed from 4 to 3.	Applications will access incorrect memory when attempting to access this field.
4	Field result has been removed from the middle position of this structural type.	1) Applications will access incorrect memory when attempting to access this field. 2) Layout of structure fields has been changed and therefore fields at higher positions of the structure definition may be incorrectly accessed by applications.

jbig.h
[+] struct jbg_ardec_state (4)

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Problems with Symbols, Medium Severity (1)

	Change	Effect
1	2nd parameter language has been removed from the calling stack.	This parameter will be ignored by the function.

jbig.h, libjbig.so
[+] jbg_strerror ( int errnum, int language ) (1)

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Problems with Data Types, Low Severity (3)

	Change	Effect
1	Field comment has been added to this type.	1) This field will not be initialized by old clients. 2) 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	Field comment_len has been added to this type.	1) This field will not be initialized by old clients. 2) 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.
3	Size of this type has been changed from 100 bytes to 108 bytes.	The fields or parameters of such data type may be incorrectly initialized or accessed by old client applications.

jbig.h
[+] struct jbg_enc_state (3)

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Problems with Symbols, Low Severity (4)

	Change	Effect
1	Type of return value has been changed from long to unsigned long.	Replacement of return type may indicate a change in its semantic meaning.

	Change	Effect
1	Type of return value has been changed from long to unsigned long.	Replacement of return type may indicate a change in its semantic meaning.

	Change	Effect
1	Type of return value has been changed from long to unsigned long.	Replacement of return type may indicate a change in its semantic meaning.

	Change	Effect
1	Type of return value has been changed from long to unsigned long.	Replacement of return type may indicate a change in its semantic meaning.

jbig.h, libjbig.so
[+] jbg_dec_getheight ( struct jbg_dec_state const* s ) (1)
[+] jbg_dec_getsize ( struct jbg_dec_state const* s ) (1)
[+] jbg_dec_getsize_merged ( struct jbg_dec_state const* s ) (1)
[+] jbg_dec_getwidth ( struct jbg_dec_state const* s ) (1)

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Problems with Constants, Low Severity (12)

	Change	Effect
1	The constant JBG_DE_8859_1 with value 1 has been removed.	The value of this constant may no longer be properly handled by new-version library functions.

	Change	Effect
1	The constant JBG_DE_UTF_8 with value 2 has been removed.	The value of this constant may no longer be properly handled by new-version library functions.

	Change	Effect
1	The value of constant JBG_EABORT has been changed from 4 to (4 << 4).	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 JBG_EAGAIN has been changed from 2 to (2 << 4).	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 JBG_EIMPL has been changed from 8 to (7 << 4).	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 JBG_EINVAL has been changed from 7 to (6 << 4).	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 JBG_EMARKER has been changed from 5 to (5 << 4).	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 constant JBG_EN with value 0 has been removed.	The value of this constant may no longer be properly handled by new-version library functions.

	Change	Effect
1	The value of constant JBG_ENOCONT has been changed from 6 to (8 << 4).	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 JBG_ENOMEM has been changed from 3 to (3 << 4).	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 JBG_EOK has been changed from 0 to (0 << 4).	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 JBG_EOK_INTR has been changed from 1 to (1 << 4).	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.

jbig.h
[+] JBG_DE_8859_1
[+] JBG_DE_UTF_8
[+] JBG_EABORT
[+] JBG_EAGAIN
[+] JBG_EIMPL
[+] JBG_EINVAL
[+] JBG_EMARKER
[+] JBG_EN
[+] JBG_ENOCONT
[+] JBG_ENOMEM
[+] JBG_EOK
[+] JBG_EOK_INTR

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Other Changes in Constants (4)

	Change	Effect
1	The constant JBG_LICENCE with value "GPL" has been added.	No effect.

	Change	Effect
1	The constant JBG_SDRST with value 0x200 has been added.	No effect.

	Change	Effect
1	The constant JBG85_ATMOVES_MAX with value 1 has been added.	No effect.

	Change	Effect
1	The constant JBG85_LICENCE with value "GPL" has been added.	No effect.

jbig.h
[+] JBG_LICENCE
[+] JBG_SDRST

jbig85.h
[+] JBG85_ATMOVES_MAX
[+] JBG85_LICENCE

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Header Files (1)

jbig.h

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Shared Libraries (1)

libjbig.so

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