Binary compatibility report for the userspace-rcu library between 0.6.4 and 0.6.5 versions on x86

Test Info

Library Name	userspace-rcu
Version #1	0.6.4
Version #2	0.6.5
CPU Type	x86
GCC Version	4.6.1

Test Results

Total Header Files	32
Total Shared Libraries	6
Total Symbols / Types	49 / 55
Verdict	Incompatible (4.1%)

Problem Summary

	Severity	Count
Added Symbols	-	1
Removed Symbols	High	0
Problems with Data Types	High	0
	Medium	4
	Low	4
Problems with Symbols	High	0
	Medium	0
	Low	4
Problems with Constants	Low	3

Added Symbols (1)

rculfqueue.h, liburcu-cds.so.1.0.0
cds_lfq_destroy_rcu ( struct cds_lfq_queue_rcu* q )

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Problems with Data Types, Medium Severity (4)

	Change	Effect
1	Field queue has been removed from this type.	1) Applications will access incorrect memory when attempting to access this field. 2) Size of the inclusive type has been changed.
2	Field rcu_head has been removed from this type.	1) Applications will access incorrect memory when attempting to access this field. 2) Size of the inclusive type has been changed.

	Change	Effect
1	Field init has been removed from this type.	1) Applications will access incorrect memory when attempting to access this field. 2) Size of the inclusive type has been changed.
2	Field release has been removed from this type.	1) Applications will access incorrect memory when attempting to access this field. 2) Size of the inclusive type has been changed.

rculfqueue.h
[+] struct cds_lfq_node_rcu (2)
[+] struct cds_lfq_queue_rcu (2)

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Problems with Data Types, Low Severity (4)

	Change	Effect
1	Size of this type has been changed from 20 bytes to 8 bytes.	The fields or parameters of such data type may be incorrectly initialized or accessed by old client applications.
2	Field ref has been renamed to dummy.	Renaming of a field in data type may indicate a change in the semantic meaning of the field.

	Change	Effect
1	Field queue_call_rcu 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	Size of this type has been changed from 32 bytes to 12 bytes.	The fields or parameters of such data type may be incorrectly initialized or accessed by old client applications.

rculfqueue.h
[+] struct cds_lfq_node_rcu (2)
[+] struct cds_lfq_queue_rcu (2)

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Problems with Symbols, Low Severity (4)

	Change	Effect
1	2nd parameter release has been renamed to queue_call_rcu.	Renaming of a parameter may indicate a change in its semantic meaning.
2	Base type of 2nd parameter release has been changed from void()(struct urcu_ref) to void()(struct rcu_head,void()(struct rcu_head)).	Replacement of parameter base type may indicate a change in its semantic meaning.

	Change	Effect
1	Type of return value has been changed from void to int (4 bytes).	Replacement of return type may indicate a change in its semantic meaning.

	Change	Effect
1	Type of return value has been changed from void to int (4 bytes).	Replacement of return type may indicate a change in its semantic meaning.

rculfqueue.h, liburcu-cds.so.1.0.0
[+] cds_lfq_init_rcu ( struct cds_lfq_queue_rcu* q, void(*release)(struct urcu_ref*) ) (2)

rculfstack.h, liburcu-cds.so.1.0.0
[+] cds_lfs_push_rcu ( struct cds_lfs_stack_rcu* s, struct cds_lfs_node_rcu* node ) (1)

wfstack.h, liburcu-cds.so.1.0.0
[+] cds_wfs_push ( struct cds_wfs_stack* s, struct cds_wfs_node* node ) (1)

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Problems with Constants, Low Severity (3)

	Change	Effect
1	The constant URCU_LFQ_PERMANENT_REF with value 128 has been removed.	The value of this constant may no longer be properly handled by new-version library functions.

	Change	Effect
1	The constant KICK_READER_LOOPS with value 10000 has been removed.	The value of this constant may no longer be properly handled by new-version library functions.

	Change	Effect
1	The constant RCU_QS_ACTIVE_ATTEMPTS with value 100 has been removed.	The value of this constant may no longer be properly handled by new-version library functions.

rculfqueue.h
[+] URCU_LFQ_PERMANENT_REF

urcu.h
[+] KICK_READER_LOOPS
[+] RCU_QS_ACTIVE_ATTEMPTS

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Header Files (32)

arch.h
generic.h (arch/generic.h)
cds.h
compiler.h
config.h
futex.h
hlist.h
list.h
rcuhlist.h
rculfqueue.h
rculfstack.h
rculist.h
ref.h
rculfqueue.h (static/rculfqueue.h)
rculfstack.h (static/rculfstack.h)
wfqueue.h (static/wfqueue.h)
wfstack.h (static/wfstack.h)
system.h
uatomic.h
generic.h (uatomic/generic.h)
uatomic_arch.h
urcu-call-rcu.h
urcu-defer.h
urcu-futex.h
urcu-pointer.h
urcu.h
urcu.h (urcu/map/urcu.h)
urcu-pointer.h (urcu/static/urcu-pointer.h)
urcu.h (urcu/static/urcu.h)
urcu_ref.h
wfqueue.h
wfstack.h

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Shared Libraries (6)

liburcu-bp.so.1.0.0
liburcu-cds.so.1.0.0
liburcu-mb.so.1.0.0
liburcu-qsbr.so.1.0.0
liburcu-signal.so.1.0.0
liburcu.so.1.0.0

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