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<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/196451">196451</a></dd>
<dt>Author</dt> <dd>bshafiei@apple.com</dd>
<dt>Date</dt> <dd>2016-02-11 15:17:19 -0800 (Thu, 11 Feb 2016)</dd>
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<h3>Log Message</h3>
<pre>Merged <a href="http://trac.webkit.org/projects/webkit/changeset/196445">r196445</a>.  rdar://problem/24511860</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#tagsSafari60211804SourceWebCoreChangeLog">tags/Safari-602.1.18.0.4/Source/WebCore/ChangeLog</a></li>
<li><a href="#tagsSafari60211804SourceWebCoreeditingcocoaDataDetectionmm">tags/Safari-602.1.18.0.4/Source/WebCore/editing/cocoa/DataDetection.mm</a></li>
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<h3>Diff</h3>
<a id="tagsSafari60211804SourceWebCoreChangeLog"></a>
<div class="modfile"><h4>Modified: tags/Safari-602.1.18.0.4/Source/WebCore/ChangeLog (196450 => 196451)</h4>
<pre class="diff"><span>
<span class="info">--- tags/Safari-602.1.18.0.4/Source/WebCore/ChangeLog        2016-02-11 23:13:29 UTC (rev 196450)
+++ tags/Safari-602.1.18.0.4/Source/WebCore/ChangeLog        2016-02-11 23:17:19 UTC (rev 196451)
</span><span class="lines">@@ -1,3 +1,24 @@
</span><ins>+2016-02-11  Babak Shafiei  &lt;bshafiei@apple.com&gt;
+
+        Merge r196445.
+
+    2016-02-11  Enrica Casucci  &lt;enrica@apple.com&gt;
+
+            WebContent process crashes when performing data detection on content with existing data detector links.
+            https://bugs.webkit.org/show_bug.cgi?id=154118
+            rdar://problem/24511860
+
+            Reviewed by Tim Horton.
+
+            The DOM mutation caused by removing the existing links, can shift the range endpoints.
+            We now save the range enpoints as positions so that we can recreate the ranges,
+            if a DOM mutation occurred.
+
+            * editing/cocoa/DataDetection.mm:
+            (WebCore::removeResultLinksFromAnchor):
+            (WebCore::searchForLinkRemovingExistingDDLinks):
+            (WebCore::DataDetection::detectContentInRange):
+
</ins><span class="cx"> 2016-02-09  Babak Shafiei  &lt;bshafiei@apple.com&gt;
</span><span class="cx"> 
</span><span class="cx">         Merge r195975.
</span></span></pre></div>
<a id="tagsSafari60211804SourceWebCoreeditingcocoaDataDetectionmm"></a>
<div class="modfile"><h4>Modified: tags/Safari-602.1.18.0.4/Source/WebCore/editing/cocoa/DataDetection.mm (196450 => 196451)</h4>
<pre class="diff"><span>
<span class="info">--- tags/Safari-602.1.18.0.4/Source/WebCore/editing/cocoa/DataDetection.mm        2016-02-11 23:13:29 UTC (rev 196450)
+++ tags/Safari-602.1.18.0.4/Source/WebCore/editing/cocoa/DataDetection.mm        2016-02-11 23:17:19 UTC (rev 196451)
</span><span class="lines">@@ -240,14 +240,16 @@
</span><span class="cx">     }
</span><span class="cx"> }
</span><span class="cx"> 
</span><del>-static bool searchForLinkRemovingExistingDDLinks(Node* startNode, Node* endNode)
</del><ins>+static bool searchForLinkRemovingExistingDDLinks(Node* startNode, Node* endNode, bool &amp;didModifyDOM)
</ins><span class="cx"> {
</span><ins>+    didModifyDOM = false;
</ins><span class="cx">     Node *node = startNode;
</span><span class="cx">     while (node) {
</span><span class="cx">         if (is&lt;HTMLAnchorElement&gt;(*node)) {
</span><span class="cx">             if (downcast&lt;Element&gt;(*node).getAttribute(dataDetectorsURLScheme) != &quot;true&quot;)
</span><span class="cx">                 return true;
</span><span class="cx">             removeResultLinksFromAnchor(node, node-&gt;parentElement());
</span><ins>+            didModifyDOM = true;
</ins><span class="cx">         }
</span><span class="cx">         
</span><span class="cx">         if (node == endNode) {
</span><span class="lines">@@ -259,6 +261,7 @@
</span><span class="cx">                     if (downcast&lt;Element&gt;(*node).getAttribute(dataDetectorsURLScheme) != &quot;true&quot;)
</span><span class="cx">                         return true;
</span><span class="cx">                     removeResultLinksFromAnchor(node, node-&gt;parentElement());
</span><ins>+                    didModifyDOM = true;
</ins><span class="cx">                 }
</span><span class="cx">                 node = node-&gt;parentNode();
</span><span class="cx">             }
</span><span class="lines">@@ -520,10 +523,25 @@
</span><span class="cx"> 
</span><span class="cx">         NSString *identifier = dataDetectorStringForPath(indexPaths[resultIndex].get());
</span><span class="cx">         NSString *correspondingURL = constructURLStringForResult(coreResult, identifier, referenceDate, (NSTimeZone *)tz, types);
</span><ins>+        bool didModifyDOM = false;
</ins><span class="cx">         
</span><del>-        if (!correspondingURL || searchForLinkRemovingExistingDDLinks(&amp;resultRanges.first()-&gt;startContainer(), &amp;resultRanges.last()-&gt;endContainer()))
</del><ins>+        // Store the range boundaries as Position, because the DOM could change if we find
+        // old data detector link.
+        Vector&lt;std::pair&lt;Position, Position&gt;&gt; rangeBoundaries;
+        for (auto&amp; range : resultRanges)
+            rangeBoundaries.append(std::make_pair(range-&gt;startPosition(), range-&gt;endPosition()));
+
+        if (!correspondingURL || searchForLinkRemovingExistingDDLinks(&amp;resultRanges.first()-&gt;startContainer(), &amp;resultRanges.last()-&gt;endContainer(), didModifyDOM))
</ins><span class="cx">             continue;
</span><span class="cx">         
</span><ins>+        if (didModifyDOM) {
+            // If the DOM was modified because some old links were removed,
+            // we need to recreate the ranges because they could no longer be valid.
+            resultRanges.clear();
+            for (auto&amp; rangeBoundary : rangeBoundaries)
+                resultRanges.append(Range::create(*rangeBoundary.first.document(), rangeBoundary.first, rangeBoundary.second));
+        }
+        
</ins><span class="cx">         lastModifiedQueryOffset = queryRange.end;
</span><span class="cx"> 
</span><span class="cx">         for (auto&amp; range : resultRanges) {
</span></span></pre>
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