<table><tr><td style="">mart created this revision.<br />mart added a reviewer: Plasma.<br />Restricted Application added projects: Plasma, Frameworks.<br />Restricted Application added subscribers: Frameworks, plasma-devel.<br />mart requested review of this revision.
</td><a style="text-decoration: none; padding: 4px 8px; margin: 0 8px 8px; float: right; color: #464C5C; font-weight: bold; border-radius: 3px; background-color: #F7F7F9; background-image: linear-gradient(to bottom,#fff,#f1f0f1); display: inline-block; border: 1px solid rgba(71,87,120,.2);" href="https://phabricator.kde.org/D10250" rel="noreferrer">View Revision</a></tr></table><br /><div><strong>REVISION SUMMARY</strong><div><p>the texture of ManagedTextureNode gets deleted by the<br />
refcountung of the internal QSharedPointer,<br />
but in some rare cases, it can be deleted too by some<br />
external cause, usually when a widget changes its parent<br />
window (either changing containment or switching between<br />
full/collapsed view)<br />
dragging a system monitor applet that uses the plotter<br />
component between the desktop and panel quite reliably<br />
crashes plasma, as it was trying to access the texture that may<br />
have become invalid at the moment.<br />
track it also with a qpointer which is used only to provide<br />
an hasValidTexture boolean which should be checked before<br />
accessing the texture of the node.</p>
<p>BUG:388508<br />
BUG:374280<br />
BUG:365052<br />
BUG:343576</p></div></div><br /><div><strong>TEST PLAN</strong><div><p>The bug is easily reproducible without the patch, wasn't<br />
able to reproduce it anymore with it</p></div></div><br /><div><strong>REPOSITORY</strong><div><div>R296 KDeclarative</div></div></div><br /><div><strong>BRANCH</strong><div><div>phab/guardTexture</div></div></div><br /><div><strong>REVISION DETAIL</strong><div><a href="https://phabricator.kde.org/D10250" rel="noreferrer">https://phabricator.kde.org/D10250</a></div></div><br /><div><strong>AFFECTED FILES</strong><div><div>src/qmlcontrols/kquickcontrolsaddons/plotter.cpp<br />
src/qmlcontrols/kquickcontrolsaddons/plotter.h<br />
src/quickaddons/managedtexturenode.cpp<br />
src/quickaddons/managedtexturenode.h</div></div></div><br /><div><strong>To: </strong>mart, Plasma<br /><strong>Cc: </strong>plasma-devel, Frameworks, michaelh, ZrenBot, ngraham, progwolff, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol, mart<br /></div>