Bug 6798 - Doesn't currently handle 32-bit wrap in sequence numbers
Summary: Doesn't currently handle 32-bit wrap in sequence numbers
Status: RESOLVED FIXED
Alias: None
Product: XCB
Classification: Unclassified
Component: Library (show other bugs)
Version: unspecified
Hardware: All All
: high normal
Assignee: Jamey Sharp
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Depends on:
Blocks: 6797
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Reported: 2006-05-01 04:57 UTC by Josh Triplett
Modified: 2006-07-01 11:02 UTC (History)
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Attachments

Description Josh Triplett 2006-05-01 04:57:44 UTC 
XCB doesn't currently handle 32-bit wrap in sequence numbers.
Comment 1 Ian Osgood 2006-06-06 18:23:06 UTC 
Is this problem related to the use of the deprecated XCBGetQueuedRequestRead() in _XGetXCBBuffer() in 
xlib/src/xcl/xcblock.c?  Is this an XCB problem or Xlib/XCB problem?
Comment 2 Ian Osgood 2006-07-01 11:02:31 UTC 
(Answer to previous comment: no, not related.)

Fixed by keithp, both for XCB and for Xlib/XCB

This required both comparing sequence numbers correctly ((int) (s1 - s2) > 0, for example), and ignoring 
the reply from the sync XCB sends when the sequence number wraps to zero.

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