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This is an automatically generated e-mail. To reply, visit:
<a href="https://git.reviewboard.kde.org/r/120420/">https://git.reviewboard.kde.org/r/120420/</a>
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<a href="https://git.reviewboard.kde.org/r/120420/diff/4/?file=333843#file333843line309" style="color: black; font-weight: bold; text-decoration: underline;">plugins/patchreview/patchreview.cpp</a>
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(Diff revision 4)
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">private:</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">if</span> <span class="p">(</span> <span class="n">qobject_cast</span><span class="o"><</span><span class="n">LocalPatchSource</span><span class="o">*></span><span class="p">(</span> <span class="n">m_patch</span> <span class="p">)</span> <span class="p">)</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;">I don't get this check, why only delete this one? what happens to the other patches? leaking is not an option</p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">also, couldn't this just be a <code style="text-rendering: inherit;color: #4444cc;padding: 0;white-space: normal;margin: 0;line-height: inherit;">setPatch(nullptr)</code> here instead of copying the code again?</p></pre>
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<a href="https://git.reviewboard.kde.org/r/120420/diff/4/?file=333843#file333843line342" style="color: black; font-weight: bold; text-decoration: underline;">plugins/patchreview/patchreview.cpp</a>
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(Diff revision 4)
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">void PatchReviewPlugin::closeReview()</pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">if</span><span class="p">(</span> <span class="n">setUniqueEmptyWorkingSet</span><span class="p">()</span> <span class="p">)</span></pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">if</span><span class="p">(</span> <span class="n">setUniqueEmptyWorkingSet</span><span class="p">()</span> <span class="p">)<span class="hl">{</span></span></pre></td>
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<a href="https://git.reviewboard.kde.org/r/120420/diff/4/?file=333844#file333844line323" style="color: black; font-weight: bold; text-decoration: underline;">shell/sessioncontroller.cpp</a>
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">public:</pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">if</span><span class="p">(</span><span class="n">currentRecoveryFiles</span><span class="p">.</span><span class="n">contains</span><span class="p">(</span><span class="n">document</span><span class="o">-></span><span class="n">url</span><span class="p">()))</span></pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">if</span><span class="p">(</span><span class="hl"> </span><span class="n"><span class="hl">document</span></span><span class="hl"> </span><span class="o"><span class="hl">&&</span></span><span class="hl"> </span><span class="n">currentRecoveryFiles</span><span class="p">.</span><span class="n">contains</span><span class="p">(</span><span class="n">document</span><span class="o">-></span><span class="n">url</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;">under what circumstances would you get here without a valid document? since the arg is not a smart pointer, a queued connection would still see a "non-zero" document pointer, even when the document got destroyed. was this what you try to prevent here? won't work though.</p></pre>
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<a href="https://git.reviewboard.kde.org/r/120420/diff/4/?file=333845#file333845line206" style="color: black; font-weight: bold; text-decoration: underline;">vcs/vcspluginhelper.cpp</a>
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">void VcsPluginHelper::disposeEventually(KTextEditor::Document *)</pre></td>
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<td bgcolor="#c5ffc4" 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">context</span><span class="p">)</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;">again, can this really happen? when? why now, and not before?</p></pre>
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<a href="https://git.reviewboard.kde.org/r/120420/diff/4/?file=333845#file333845line214" style="color: black; font-weight: bold; text-decoration: underline;">vcs/vcspluginhelper.cpp</a>
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(Diff revision 4)
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">void VcsPluginHelper::disposeEventually(KTextEditor::Document *)</pre></td>
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<td bgcolor="#fdfebc" 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">item</span><span class="o">-></span><span class="n">target</span><span class="p">())</span></pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">if</span><span class="p">(</span><span class="n"><span class="hl">item</span></span><span class="hl"> </span><span class="o"><span class="hl">&&</span></span><span class="hl"> </span><span class="o">!</span><span class="n">item</span><span class="o">-></span><span class="n">target</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;">also looks wrong. the list should never contain zero items. if it does, something else is wrong</p></pre>
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<a href="https://git.reviewboard.kde.org/r/120420/diff/4/?file=333846#file333846line203" style="color: black; font-weight: bold; text-decoration: underline;">vcs/widgets/vcsdiffpatchsources.cpp</a>
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">void VCSDiffPatchSource::update() {</pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">delete</span> <span class="n">m_commitMessageWidget</span><span class="p">.</span><span class="n">data</span><span class="p">();</span></pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="c1"><span class="hl">// </span> delete m_commitMessageWidget.data();</span></pre></td>
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<a href="https://git.reviewboard.kde.org/r/120420/diff/4/?file=333846#file333846line204" style="color: black; font-weight: bold; text-decoration: underline;">vcs/widgets/vcsdiffpatchsources.cpp</a>
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">void VCSDiffPatchSource::update() {</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">if</span> <span class="p">(</span><span class="n">m_commitMessageEdit</span><span class="p">.</span><span class="n">data</span><span class="p">())</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;">can you remove the <code style="text-rendering: inherit;color: #4444cc;padding: 0;white-space: normal;margin: 0;line-height: inherit;">.data()</code> here?</p></pre>
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<a href="https://git.reviewboard.kde.org/r/120420/diff/4/?file=333846#file333846line207" style="color: black; font-weight: bold; text-decoration: underline;">vcs/widgets/vcsdiffpatchsources.cpp</a>
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(Diff revision 4)
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">void VCSDiffPatchSource::update() {</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">qDebug</span><span class="p">()</span> <span class="o"><<</span> <span class="s">"~VCSCommitDiffPatchSource()"</span> <span class="o"><<</span> <span class="k">this</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;">remove or use <code style="text-rendering: inherit;color: #4444cc;padding: 0;white-space: normal;margin: 0;line-height: inherit;">kDebug() << this;</code></p></pre>
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<a href="https://git.reviewboard.kde.org/r/120420/diff/4/?file=333846#file333846line283" style="color: black; font-weight: bold; text-decoration: underline;">vcs/widgets/vcsdiffpatchsources.cpp</a>
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static KDevelop::IPatchSource::Ptr currentShownDiff;</pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">delete</span> <span class="n">currentShownDiff</span><span class="p">;</span></pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="c1"><span class="hl">// </span> delete currentShownDiff;</span></pre></td>
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<a href="https://git.reviewboard.kde.org/r/120420/diff/4/?file=333847#file333847line65" style="color: black; font-weight: bold; text-decoration: underline;">vcs/widgets/vcsdiffwidget.cpp</a>
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">public:</pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">delete</span> <span class="n">patch</span><span class="p">;</span></pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="c1"><span class="hl">// </span> delete patch;</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;">remove and merge the if with the else above:</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">else</span> <span style="color: #008000; font-weight: bold">if</span> (patch) {
patch<span style="color: #666666">-></span>deleteLater();
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<p>- Milian Wolff</p>
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<p>On December 19th, 2014, 5:52 p.m. UTC, René J.V. Bertin wrote:</p>
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<div>Review request for KDE Software on Mac OS X and KDevelop.</div>
<div>By René J.V. Bertin.</div>
<p style="color: grey;"><i>Updated Dec. 19, 2014, 5:52 p.m.</i></p>
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<b style="color: #575012; font-size: 10pt;">Repository: </b>
kdevplatform
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Description </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;">This RR replaces https://git.reviewboard.kde.org/r/120150/, itself a follow-up to RR https://reviewboard.kde.org/r/120081/ . In that RR I proposed an (accepted & submitted ) approach to prevent kdevelop from crashing after closing the patch review ("git/show differences") toolview.</p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">This turned out to be insufficient, the most likely culprit being a nested event loop. In my most recent bug hunting I noticed that <code style="text-rendering: inherit;color: #4444cc;padding: 0;white-space: normal;margin: 0;line-height: inherit;">closeReview</code> is called through Qt's mouse-eventh handling function when the "Finish Review" button (or "Commit", when doing a git->commit) is pressed. The crash I have been experiencing occurs in that function (or at least not far down the call stack from that function).
I had already noticed that the crash never occurred when I closed all document views first (the patch file and all modified files), e.g. by using the "Close All" menu action.</p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">So:
- <code style="text-rendering: inherit;color: #4444cc;padding: 0;white-space: normal;margin: 0;line-height: inherit;">closeReview</code> closes all open documents (minus the patchfile) via <code style="text-rendering: inherit;color: #4444cc;padding: 0;white-space: normal;margin: 0;line-height: inherit;">qDeleteAll(m_highlighters)</code> or by calling <code style="text-rendering: inherit;color: #4444cc;padding: 0;white-space: normal;margin: 0;line-height: inherit;">m_highlighters.erase(iterator)</code> repeatedly. Documents are thus closed by deleting the "content object" that represents them, letting that fact filter back to the UI
- closing documents via the UI takes the opposite route, and is more in line with a modern GUI framework (at least OS X/Cocoa) where everything happens because of an event in the user interface. You receive an event (message) when the user closes a document, the framework handles most UI-related stuff for you, and if you have to dispose of document-related non-gui data you can do that for example just before the widget actually closes (<code style="text-rendering: inherit;color: #4444cc;padding: 0;white-space: normal;margin: 0;line-height: inherit;">windowWillClose</code>, <code style="text-rendering: inherit;color: #4444cc;padding: 0;white-space: normal;margin: 0;line-height: inherit;">menuWillClose</code>, <code style="text-rendering: inherit;color: #4444cc;padding: 0;white-space: normal;margin: 0;line-height: inherit;">applicationWillClose</code> etc. messages in Cocoa).</p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">This led to the current patch, which cycles through and closes the <code style="text-rendering: inherit;color: #4444cc;padding: 0;white-space: normal;margin: 0;line-height: inherit;">Sublime::View</code>s associated with the window area, and then lets Qt send and process all events that are pending and/or result from closing those windows. Only then does it proceed the regular course of action (calling <code style="text-rendering: inherit;color: #4444cc;padding: 0;white-space: normal;margin: 0;line-height: inherit;">removeHighLighting()</code> which ought to be no longer necessary).</p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">The only change for the user is that the pinkish patch review plugin background (with the "back to code" button) is visible briefly before the toolview is closed.</p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">I understand that this crash (or a closely related one) does not only occur on OS X but also on Linux, so I did not put the new code in a conditional block.</p></pre>
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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;">kdevplatform git/kde4-legacy on KDE/MacPorts OS X 10.6.8 with kdelibs 4.14.1</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>plugins/grepview/grepviewplugin.cpp <span style="color: grey">(7e3d933)</span></li>
<li>plugins/patchreview/patchreview.cpp <span style="color: grey">(18b63db)</span></li>
<li>shell/sessioncontroller.cpp <span style="color: grey">(ae4e355)</span></li>
<li>vcs/vcspluginhelper.cpp <span style="color: grey">(26ab57c)</span></li>
<li>vcs/widgets/vcsdiffpatchsources.cpp <span style="color: grey">(c3e2dae)</span></li>
<li>vcs/widgets/vcsdiffwidget.cpp <span style="color: grey">(54787b9)</span></li>
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<p><a href="https://git.reviewboard.kde.org/r/120420/diff/" style="margin-left: 3em;">View Diff</a></p>
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