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<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/200027">200027</a></dd>
<dt>Author</dt> <dd>carlosgc@webkit.org</dd>
<dt>Date</dt> <dd>2016-04-25 08:55:51 -0700 (Mon, 25 Apr 2016)</dd>
</dl>
<h3>Log Message</h3>
<pre>Merge <a href="http://trac.webkit.org/projects/webkit/changeset/199781">r199781</a> - Potential overflow in RenderLayer::hitTestList()
https://bugs.webkit.org/show_bug.cgi?id=156804
Reviewed by Simon Fraser.
Use size_t type instead of int to iterate over the Vector to make sure
we don't overflow. This is a speculative fix for <rdar://problem/23249479>.
* rendering/RenderLayer.cpp:
(WebCore::RenderLayer::hitTestList):</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#releasesWebKitGTKwebkit212SourceWebCoreChangeLog">releases/WebKitGTK/webkit-2.12/Source/WebCore/ChangeLog</a></li>
<li><a href="#releasesWebKitGTKwebkit212SourceWebCorerenderingRenderLayercpp">releases/WebKitGTK/webkit-2.12/Source/WebCore/rendering/RenderLayer.cpp</a></li>
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<h3>Diff</h3>
<a id="releasesWebKitGTKwebkit212SourceWebCoreChangeLog"></a>
<div class="modfile"><h4>Modified: releases/WebKitGTK/webkit-2.12/Source/WebCore/ChangeLog (200026 => 200027)</h4>
<pre class="diff"><span>
<span class="info">--- releases/WebKitGTK/webkit-2.12/Source/WebCore/ChangeLog 2016-04-25 15:54:34 UTC (rev 200026)
+++ releases/WebKitGTK/webkit-2.12/Source/WebCore/ChangeLog 2016-04-25 15:55:51 UTC (rev 200027)
</span><span class="lines">@@ -1,3 +1,16 @@
</span><ins>+2016-04-20 Chris Dumez <cdumez@apple.com>
+
+ Potential overflow in RenderLayer::hitTestList()
+ https://bugs.webkit.org/show_bug.cgi?id=156804
+
+ Reviewed by Simon Fraser.
+
+ Use size_t type instead of int to iterate over the Vector to make sure
+ we don't overflow. This is a speculative fix for <rdar://problem/23249479>.
+
+ * rendering/RenderLayer.cpp:
+ (WebCore::RenderLayer::hitTestList):
+
</ins><span class="cx"> 2016-04-20 Carlos Garcia Campos <cgarcia@igalia.com>
</span><span class="cx">
</span><span class="cx"> [Cairo] Crash in GraphicsContext::drawFocusRing when painting is disabled
</span></span></pre></div>
<a id="releasesWebKitGTKwebkit212SourceWebCorerenderingRenderLayercpp"></a>
<div class="modfile"><h4>Modified: releases/WebKitGTK/webkit-2.12/Source/WebCore/rendering/RenderLayer.cpp (200026 => 200027)</h4>
<pre class="diff"><span>
<span class="info">--- releases/WebKitGTK/webkit-2.12/Source/WebCore/rendering/RenderLayer.cpp 2016-04-25 15:54:34 UTC (rev 200026)
+++ releases/WebKitGTK/webkit-2.12/Source/WebCore/rendering/RenderLayer.cpp 2016-04-25 15:55:51 UTC (rev 200027)
</span><span class="lines">@@ -5339,8 +5339,8 @@
</span><span class="cx"> return nullptr;
</span><span class="cx">
</span><span class="cx"> RenderLayer* resultLayer = nullptr;
</span><del>- for (int i = list->size() - 1; i >= 0; --i) {
- RenderLayer* childLayer = list->at(i);
</del><ins>+ for (size_t i = list->size(); i > 0; --i) {
+ RenderLayer* childLayer = list->at(i - 1);
</ins><span class="cx"> if (childLayer->isFlowThreadCollectingGraphicsLayersUnderRegions())
</span><span class="cx"> continue;
</span><span class="cx"> RenderLayer* hitLayer = nullptr;
</span></span></pre>
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