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This is an automatically generated e-mail. To reply, visit:
<a href="https://git.reviewboard.kde.org/r/122393/">https://git.reviewboard.kde.org/r/122393/</a>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;"><p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">Thanks for looking into this!</p></pre>
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<a href="https://git.reviewboard.kde.org/r/122393/diff/2/?file=346479#file346479line372" style="color: black; font-weight: bold; text-decoration: underline;">src/notifybypopup.cpp</a>
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(Diff revision 2)
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">void NotifyByPopup::close(KNotification *notification)</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">auto</span><span class="o">&</span> <span class="n">item</span> <span class="o">=</span> <span class="n">iter</span><span class="p">.</span><span class="n">next</span><span class="p">();</span></pre></td>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;"><p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;"><code style="text-rendering: inherit;color: #4444cc;padding: 0;white-space: normal;margin: 0;line-height: inherit;">auto& item</code> --> <code style="text-rendering: inherit;color: #4444cc;padding: 0;white-space: normal;margin: 0;line-height: inherit;">auto &item</code> (as per the frameworks coding style)</p></pre>
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<a href="https://git.reviewboard.kde.org/r/122393/diff/2/?file=346479#file346479line469" style="color: black; font-weight: bold; text-decoration: underline;">src/notifybypopup.cpp</a>
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(Diff revision 2)
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">void NotifyByPopup::onGalagoNotificationActionInvoked(uint notificationId, const QString &actionKey)</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">KNotification</span><span class="o">*</span> <span class="n">n</span> <span class="o">=</span> <span class="o">*</span><span class="n">iter</span><span class="p">;</span></pre></td>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;"><p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;"><code style="text-rendering: inherit;color: #4444cc;padding: 0;white-space: normal;margin: 0;line-height: inherit;">KNotification* n</code> --> <code style="text-rendering: inherit;color: #4444cc;padding: 0;white-space: normal;margin: 0;line-height: inherit;">KNotification *n</code> (as per the frameworks coding style)</p></pre>
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<a href="https://git.reviewboard.kde.org/r/122393/diff/2/?file=346479#file346479line485" style="color: black; font-weight: bold; text-decoration: underline;">src/notifybypopup.cpp</a>
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(Diff revision 2)
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">void NotifyByPopup::onGalagoNotificationActionInvoked(uint notificationId, const QString &actionKey)</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">watcher</span><span class="o">-></span><span class="n">deleteLater</span><span class="p">();</span></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">KNotification</span> <span class="o">*</span><span class="n">notification</span> <span class="o">=</span> <span class="n">watcher</span><span class="o">-></span><span class="n">property</span><span class="p">(</span><span class="s">"notificationObject"</span><span class="p">).</span><span class="n">value</span><span class="o"><</span><span class="n">KNotification</span><span class="o">*></span><span class="p">();</span></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">KNotification</span> <span class="o">*</span><span class="n">notification</span> <span class="o">=</span> <span class="n">watcher</span><span class="o">-></span><span class="n">property</span><span class="p">(</span><span class="s">"notificationObject"</span><span class="p">).</span><span class="n">value</span><span class="o"><</span><span class="n">KNotification</span><span class="o">*></span><span class="p">();</span></pre></td>
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<th bgcolor="#f0f0f0" style="border-right: 1px solid #C0C0C0;" align="right"><font size="2">468</font></th>
<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">notification</span><span class="p">)</span> <span class="p">{</span></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">notification</span><span class="p">)</span> <span class="p">{</span></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">qWarning</span><span class="p">()</span> <span class="o"><<</span> <span class="s">"Invalid notification object passed in DBus reply watcher; notification will probably break"</span><span class="p">;</span></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">qWarning</span><span class="p">()</span> <span class="o"><<</span> <span class="s">"Invalid notification object passed in DBus reply watcher; notification will probably break"</span><span class="p">;</span></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">return</span><span class="p">;</span></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">return</span><span class="p">;</span></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="p">}</span></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="p">}</span></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">QDBusPendingReply</span><span class="o"><</span><span class="n">uint</span><span class="o">></span> <span class="n">reply</span> <span class="o">=</span> <span class="o">*</span><span class="n">watcher</span><span class="p">;</span></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">QDBusPendingReply</span><span class="o"><</span><span class="n">uint</span><span class="o">></span> <span class="n">reply</span> <span class="o">=</span> <span class="o">*</span><span class="n">watcher</span><span class="p">;</span></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">d</span><span class="o">-></span><span class="n">galagoNotifications</span><span class="p">.</span><span class="n">insert</span><span class="p">(</span><span class="n">reply</span><span class="p">.</span><span class="n">argumentAt</span><span class="o"><</span><span class="mi">0</span><span class="o">></span><span class="p">(),</span> <span class="n">notification</span><span class="p">);</span></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">d</span><span class="o">-></span><span class="n">galagoNotifications</span><span class="p">.</span><span class="n">insert</span><span class="p">(</span><span class="n">reply</span><span class="p">.</span><span class="n">argumentAt</span><span class="o"><</span><span class="mi">0</span><span class="o">></span><span class="p">(),</span> <span class="n">notification</span><span class="p">);</span></pre></td>
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<td bgcolor="#ffc5ce" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">watcher</span><span class="o">-></span><span class="n">deleteLater</span><span class="p">();</span></pre></td>
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<td bgcolor="#ffc5ce" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;"><p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">Can you explain this change in a bit more detail?</p></pre>
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<p>- Martin Klapetek</p>
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<p>On February 2nd, 2015, 9:59 p.m. CET, Xuetian Weng wrote:</p>
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<div>Review request for KDE Frameworks and Martin Klapetek.</div>
<div>By Xuetian Weng.</div>
<p style="color: grey;"><i>Updated Feb. 2, 2015, 9:59 p.m.</i></p>
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<b style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Bugs: </b>
<a href="https://bugs.kde.org/show_bug.cgi?id=342752">342752</a>
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<b style="color: #575012; font-size: 10pt;">Repository: </b>
knotifications
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Description </h1>
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<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">Follow code would crash with current code, because notificationQueue may contain dangling pointer to KNotification.</p>
<h1 style="font-size: 100%;text-rendering: inherit;padding: 0;white-space: normal;margin: 0;line-height: inherit;">include <QApplication></h1>
<h1 style="font-size: 100%;text-rendering: inherit;padding: 0;white-space: normal;margin: 0;line-height: inherit;">include <KNotification></h1>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">int main(int argc, char* argv[]) {
QApplication app(argc,argv);</p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;"><div class="codehilite" style="background: #f8f8f8"><pre style="line-height: 125%"><span style="color: #008000; font-weight: bold">do</span> {
KNotification a(<span style="color: #BA2121">"NewMessage"</span>);
a.setComponentName(<span style="color: #BA2121">"kwrited"</span>); <span style="color: #408080; font-style: italic">// just a random component for test</span>
a.sendEvent();
} <span style="color: #008000; font-weight: bold">while</span>(<span style="color: #666666">0</span>);
app.exec();
<span style="color: #008000; font-weight: bold">return</span> <span style="color: #666666">0</span>;
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<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">}</p>
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<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">This is fixed by remove item from queue in ::close.</p>
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<li style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: normal;">342752 might happen because galagoNotifications may contain dangling pointer.
This is fixed by using QPointer in galagoNotifications (instead of in ::close, because it will initiate a dbus call and others may be still willing to wait for finished signal).</li>
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<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">If KNotification is already deleted, don't call other related functions on this KNotification.</p>
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<li style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: normal;">watcher is safer to call deleteLater on watcher first.</li>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Testing </h1>
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<pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;"><p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">Above code doesn't crash anymore.</p></pre>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
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<li>src/notifybypopup.cpp <span style="color: grey">(95937fc)</span></li>
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<p><a href="https://git.reviewboard.kde.org/r/122393/diff/" style="margin-left: 3em;">View Diff</a></p>
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