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DescriptionOlivier Fourdan
2010-11-04 15:46:17 UTC
Created attachment 457831[details]
Reproducer program
Description of problem:
Lines of length greater than 46340 can be drawn with one of the coordinates being negative. However for dashed lines, miPolyBuildPoly() overflows the "int" type when setting up edges for a section of the dashed line. This results in the dashed segments not being drawn at all.
Version-Release number of selected component (if applicable):
xorg-x11-server-1.7.7-26.el6
How reproducible:
Always
Steps to Reproduce:
1. Save attached reproducer program as line.c
2. Build the rproducer program with
$ gcc -DBREAK -o line line.c -lX11
3. Run the test program in X11
$ ./line
4. Right-click within the window created by the test application
Actual results:
No dotted line is displayed
Expected results:
A dotted line is shown
Additional info:
Remove the "-DBREAK" from step #2 to get the expected result. The difference is that defining BREAK sets y2 to 31341 causing the overflow.
This has been reported upstream as bug 31093:
https://bugs.freedesktop.org/show_bug.cgi?id=31093
The patch proposed by Siddhesh Poyarekar has been reviewed by Keith Packard:
http://lists.x.org/archives/xorg-devel/2010-October/014559.html
Comment 3RHEL Program Management
2011-01-07 04:34:53 UTC
This request was evaluated by Red Hat Product Management for
inclusion in the current release of Red Hat Enterprise Linux.
Because the affected component is not scheduled to be updated
in the current release, Red Hat is unfortunately unable to
address this request at this time. Red Hat invites you to
ask your support representative to propose this request, if
appropriate and relevant, in the next release of Red Hat
Enterprise Linux. If you would like it considered as an
exception in the current release, please ask your support
representative.
This request was erroneously denied for the current release of Red Hat
Enterprise Linux. The error has been fixed and this request has been
re-proposed for the current release.
Comment 5RHEL Program Management
2011-02-01 06:05:36 UTC
This request was evaluated by Red Hat Product Management for
inclusion in the current release of Red Hat Enterprise Linux.
Because the affected component is not scheduled to be updated
in the current release, Red Hat is unfortunately unable to
address this request at this time. Red Hat invites you to
ask your support representative to propose this request, if
appropriate and relevant, in the next release of Red Hat
Enterprise Linux. If you would like it considered as an
exception in the current release, please ask your support
representative.
Comment 6RHEL Program Management
2011-02-01 18:50:55 UTC
This request was erroneously denied for the current release of
Red Hat Enterprise Linux. The error has been fixed and this
request has been re-proposed for the current release.
Comment 7RHEL Program Management
2011-04-04 02:33:37 UTC
Since RHEL 6.1 External Beta has begun, and this bug remains
unresolved, it has been rejected as it is not proposed as
exception or blocker.
Red Hat invites you to ask your support representative to
propose this request, if appropriate and relevant, in the
next release of Red Hat Enterprise Linux.