<table><tr><td style="">graesslin created this revision.<br />Restricted Application added a project: KWin.<br />Restricted Application added subscribers: kwin, plasma-devel.
</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/D6533" rel="noreferrer">View Revision</a></tr></table><br /><div><strong>REVISION SUMMARY</strong><div><p>This is a regression due to changes in Breeze to support Qt 5.8+ behavior<br />
change. KWin's own QPA operates like < Qt 5.7 and breeze was programmed<br />
against that. Due to that it can happen now that Breeze hits code paths<br />
in which KWin does not have a surface.</p>
<p>To trigger one only needed to open the user actions menu twice.</p>
<p>This change adds a test case which simulates the problem and fixes all<br />
crashes happening in the code path.</p>
<p>Most likely shadows are now broken for KWin's own windows, this change is<br />
only to prevent the crash and thus is for 5.10 branch, while shadow<br />
fixing will go to master branch.</p>
<p>BUG: 382063<br />
FIXED-IN: 5.10.4</p></div></div><br /><div><strong>TEST PLAN</strong><div><p>New test case</p></div></div><br /><div><strong>REPOSITORY</strong><div><div>R108 KWin</div></div></div><br /><div><strong>BRANCH</strong><div><div>qpa-verify-surface-5.10</div></div></div><br /><div><strong>REVISION DETAIL</strong><div><a href="https://phabricator.kde.org/D6533" rel="noreferrer">https://phabricator.kde.org/D6533</a></div></div><br /><div><strong>AFFECTED FILES</strong><div><div>autotests/integration/CMakeLists.txt<br />
autotests/integration/dont_crash_useractions_menu.cpp<br />
plugins/qpa/backingstore.cpp<br />
plugins/qpa/nativeinterface.cpp</div></div></div><br /><div><strong>To: </strong>graesslin, KWin, Plasma<br /><strong>Cc: </strong>plasma-devel, kwin, ZrenBot, progwolff, lesliezhai, ali-mohamed, hardening, jensreuterberg, abetts, sebas, apol, mart, lukas<br /></div>