Bug 6798

Summary:	Doesn't currently handle 32-bit wrap in sequence numbers
Product:	XCB	Reporter:	Josh Triplett <josh>
Component:	Library	Assignee:	Jamey Sharp <jamey>
Status:	RESOLVED FIXED	QA Contact:
Severity:	normal
Priority:	high
Version:	unspecified
Hardware:	All
OS:	All
Whiteboard:
i915 platform:		i915 features:
Bug Depends on:
Bug Blocks:	6797

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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