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<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/284806">284806</a></dd>
<dt>Author</dt> <dd>alancoon@apple.com</dd>
<dt>Date</dt> <dd>2021-10-25 12:09:53 -0700 (Mon, 25 Oct 2021)</dd>
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<h3>Log Message</h3>
<pre>Cherry-pick <a href="http://trac.webkit.org/projects/webkit/changeset/284506">r284506</a>. rdar://problem/84340372

    canDoFastSpread should also check that the Structure is from the global object we're watching
    https://bugs.webkit.org/show_bug.cgi?id=231976
    <rdar://84340372>

    Reviewed by Keith Miller.

    * dfg/DFGGraph.cpp:
    (JSC::DFG::Graph::canDoFastSpread):

    git-svn-id: https://svn.webkit.org/repository/webkit/trunk@284506 268f45cc-cd09-0410-ab3c-d52691b4dbfc</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#branchessafari612branchSourceJavaScriptCoreChangeLog">branches/safari-612-branch/Source/JavaScriptCore/ChangeLog</a></li>
<li><a href="#branchessafari612branchSourceJavaScriptCoredfgDFGGraphcpp">branches/safari-612-branch/Source/JavaScriptCore/dfg/DFGGraph.cpp</a></li>
</ul>

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<h3>Diff</h3>
<a id="branchessafari612branchSourceJavaScriptCoreChangeLog"></a>
<div class="modfile"><h4>Modified: branches/safari-612-branch/Source/JavaScriptCore/ChangeLog (284805 => 284806)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-612-branch/Source/JavaScriptCore/ChangeLog       2021-10-25 19:09:50 UTC (rev 284805)
+++ branches/safari-612-branch/Source/JavaScriptCore/ChangeLog  2021-10-25 19:09:53 UTC (rev 284806)
</span><span class="lines">@@ -1,5 +1,32 @@
</span><span class="cx"> 2021-10-25  Null  <null@apple.com>
</span><span class="cx"> 
</span><ins>+        Cherry-pick r284506. rdar://problem/84340372
+
+    canDoFastSpread should also check that the Structure is from the global object we're watching
+    https://bugs.webkit.org/show_bug.cgi?id=231976
+    <rdar://84340372>
+    
+    Reviewed by Keith Miller.
+    
+    * dfg/DFGGraph.cpp:
+    (JSC::DFG::Graph::canDoFastSpread):
+    
+    
+    git-svn-id: https://svn.webkit.org/repository/webkit/trunk@284506 268f45cc-cd09-0410-ab3c-d52691b4dbfc
+
+    2021-10-19  Saam Barati  <sbarati@apple.com>
+
+            canDoFastSpread should also check that the Structure is from the global object we're watching
+            https://bugs.webkit.org/show_bug.cgi?id=231976
+            <rdar://84340372>
+
+            Reviewed by Keith Miller.
+
+            * dfg/DFGGraph.cpp:
+            (JSC::DFG::Graph::canDoFastSpread):
+
+2021-10-25  Null  <null@apple.com>
+
</ins><span class="cx">         Cherry-pick r284467. rdar://problem/84327812
</span><span class="cx"> 
</span><span class="cx">     Wasm Table can take arbitrary default value
</span></span></pre></div>
<a id="branchessafari612branchSourceJavaScriptCoredfgDFGGraphcpp"></a>
<div class="modfile"><h4>Modified: branches/safari-612-branch/Source/JavaScriptCore/dfg/DFGGraph.cpp (284805 => 284806)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-612-branch/Source/JavaScriptCore/dfg/DFGGraph.cpp        2021-10-25 19:09:50 UTC (rev 284805)
+++ branches/safari-612-branch/Source/JavaScriptCore/dfg/DFGGraph.cpp   2021-10-25 19:09:53 UTC (rev 284806)
</span><span class="lines">@@ -1843,10 +1843,12 @@
</span><span class="cx">     if (!value.m_structure.isFinite())
</span><span class="cx">         return false;
</span><span class="cx"> 
</span><del>-    ArrayPrototype* arrayPrototype = globalObjectFor(node->child1()->origin.semantic)->arrayPrototype();
</del><ins>+    JSGlobalObject* globalObject = globalObjectFor(node->child1()->origin.semantic);
+    ArrayPrototype* arrayPrototype = globalObject->arrayPrototype();
</ins><span class="cx">     bool allGood = true;
</span><span class="cx">     value.m_structure.forEach([&] (RegisteredStructure structure) {
</span><span class="cx">         allGood &= structure->hasMonoProto()
</span><ins>+            && structure->globalObject() == globalObject
</ins><span class="cx">             && structure->storedPrototype() == arrayPrototype
</span><span class="cx">             && !structure->isDictionary()
</span><span class="cx">             && structure->getConcurrently(m_vm.propertyNames->iteratorSymbol.impl()) == invalidOffset
</span></span></pre>
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