Bug 207290 - plasma crashes with a 16 bit screen depth, Qt 4.6, and -graphicssystem raster
Summary: plasma crashes with a 16 bit screen depth, Qt 4.6, and -graphicssystem raster
Status: RESOLVED FIXED
Alias: None
Product: plasma4
Classification: Plasma
Component: general (show other bugs)
Version: unspecified
Platform: Fedora RPMs Linux
: NOR crash
Target Milestone: ---
Assignee: Plasma Bugs List
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2009-09-13 22:26 UTC by Benjamin K. Stuhl
Modified: 2009-11-08 12:02 UTC (History)
1 user (show)

See Also:
Latest Commit:
Version Fixed In:

Attachments
untested concept patch (1.36 KB, patch)
2009-09-14 01:27 UTC, Benjamin K. Stuhl 		Details
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Description Benjamin K. Stuhl 2009-09-13 22:26:38 UTC 
Version:            (using KDE 4.3.1)
Compiler:          gcc 4.4.1 
OS:                Linux
Installed from:    Fedora RPMs

In 4.6, Qt now supports 16-bit depth QImages, and uses them for QPixmap::toImage() if you're using the Raster graphics system and a 16-bit screen depth. However, plasma's expblur() assumes a 32 bit depth QImage (without checking for it) and so causes memory corruption when it is used with a 16-bit depth screen.
Comment 1 Benjamin K. Stuhl 2009-09-14 01:27:53 UTC 
Created attachment 36930 [details]
untested concept patch

Here's an (untested) concept patch. (Untested because my Qt 4.6 install is sufficiently broken that I can't get KDE to configure on that system ATM...)
Comment 2 Beat Wolf 2009-09-14 10:05:13 UTC 
could you submit it to reviewboard.kde.org? thank you
Comment 3 Benjamin K. Stuhl 2009-09-14 17:01:30 UTC 
Submitted as http://reviewboard.kde.org/r/1608/ . I hope I filled it out correctly, I've never used reviewboard before.