<table><tr><td style="">fvogt requested changes to this revision.<br />fvogt added inline comments.<br />This revision now requires changes to proceed.
</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/D28889">View Revision</a></tr></table><br /><div><strong>INLINE COMMENTS</strong><div><div style="margin: 6px 0 12px 0;"><div style="border: 1px solid #C7CCD9; border-radius: 3px;"><div style="padding: 0; background: #F7F7F7; border-color: #e3e4e8; border-style: solid; border-width: 0 0 1px 0; margin: 0;"><div style="color: #74777d; background: #eff2f4; padding: 6px 8px; overflow: hidden;"><a style="float: right; text-decoration: none;" href="https://phabricator.kde.org/D28889#inline-164885">View Inline</a><span style="color: #4b4d51; font-weight: bold;">meven</span> wrote in <span style="color: #4b4d51; font-weight: bold;">drm_output.cpp:90</span></div>
<div style="margin: 8px 0; padding: 0 12px; color: #74777D;"><p style="padding: 0; margin: 8px;">I replace those deletes, as they did not delete the m_cursor array and allowed m_cursor[i] to keep dangling pointers causing down the line crash in QImage rather than a proper segfault where m_cursor[i] was used.</p></div></div>
<div style="margin: 8px 0; padding: 0 12px;"><p style="padding: 0; margin: 8px;">To avoid dangling pointers it would have to use</p>
<div class="remarkup-code-block" style="margin: 12px 0;" data-code-lang="text" data-sigil="remarkup-code-block"><pre class="remarkup-code" style="font: 11px/15px "Menlo", "Consolas", "Monaco", monospace; padding: 12px; margin: 0; background: rgba(71, 87, 120, 0.08);">delete m_cursor[0];
m_cursor[0] = nullptr;</pre></div>
<p style="padding: 0; margin: 8px;"><tt style="background: #ebebeb; font-size: 13px;">delete[] m_cursor</tt> is like <tt style="background: #ebebeb; font-size: 13px;">free(m_cursor)</tt>. It'll most likely crash.</p></div></div></div></div></div><br /><div><strong>REPOSITORY</strong><div><div>R108 KWin</div></div></div><br /><div><strong>REVISION DETAIL</strong><div><a href="https://phabricator.kde.org/D28889">https://phabricator.kde.org/D28889</a></div></div><br /><div><strong>To: </strong>meven, KWin, zzag, davidedmundson, fvogt<br /><strong>Cc: </strong>fvogt, ngraham, apol, kwin, Orage, cacarry, LeGast00n, The-Feren-OS-Dev, cblack, jraleigh, zachus, fbampaloukas, mkulinski, ragreen, jackyalcine, iodelay, crozbo, bwowk, ZrenBot, alexeymin, himcesjf, lesliezhai, ali-mohamed, hardening, romangg, jensreuterberg, abetts, sebas, ahiemstra, mart<br /></div>