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<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/207790">207790</a></dd>
<dt>Author</dt> <dd>ryanhaddad@apple.com</dd>
<dt>Date</dt> <dd>2016-10-24 17:11:38 -0700 (Mon, 24 Oct 2016)</dd>
</dl>

<h3>Log Message</h3>
<pre>Unreviewed, rolling out <a href="http://trac.webkit.org/projects/webkit/changeset/207783">r207783</a>.

This change appears to have caused fast/selectors/invalid-
functional-pseudo-class.html to crash on iOS and macOS

Reverted changeset:

&quot;[CSS Parser] Fix :lang argument parsing&quot;
https://bugs.webkit.org/show_bug.cgi?id=163913
http://trac.webkit.org/changeset/207783</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkSourceWebCoreChangeLog">trunk/Source/WebCore/ChangeLog</a></li>
<li><a href="#trunkSourceWebCorecssSelectorPseudoClassAndCompatibilityElementMapin">trunk/Source/WebCore/css/SelectorPseudoClassAndCompatibilityElementMap.in</a></li>
<li><a href="#trunkSourceWebCorecssparserCSSParserValuescpp">trunk/Source/WebCore/css/parser/CSSParserValues.cpp</a></li>
<li><a href="#trunkSourceWebCorecssparserCSSParserValuesh">trunk/Source/WebCore/css/parser/CSSParserValues.h</a></li>
<li><a href="#trunkSourceWebCorecssparserCSSSelectorParsercpp">trunk/Source/WebCore/css/parser/CSSSelectorParser.cpp</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkSourceWebCoreChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/ChangeLog (207789 => 207790)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/ChangeLog        2016-10-25 00:07:15 UTC (rev 207789)
+++ trunk/Source/WebCore/ChangeLog        2016-10-25 00:11:38 UTC (rev 207790)
</span><span class="lines">@@ -1,3 +1,16 @@
</span><ins>+2016-10-24  Ryan Haddad  &lt;ryanhaddad@apple.com&gt;
+
+        Unreviewed, rolling out r207783.
+
+        This change appears to have caused fast/selectors/invalid-
+        functional-pseudo-class.html to crash on iOS and macOS
+
+        Reverted changeset:
+
+        &quot;[CSS Parser] Fix :lang argument parsing&quot;
+        https://bugs.webkit.org/show_bug.cgi?id=163913
+        http://trac.webkit.org/changeset/207783
+
</ins><span class="cx"> 2016-10-24  Brady Eidson  &lt;beidson@apple.com&gt;
</span><span class="cx"> 
</span><span class="cx">         IndexedDB 2.0: Support new IDBKeyRange interfaces.
</span></span></pre></div>
<a id="trunkSourceWebCorecssSelectorPseudoClassAndCompatibilityElementMapin"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/css/SelectorPseudoClassAndCompatibilityElementMap.in (207789 => 207790)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/css/SelectorPseudoClassAndCompatibilityElementMap.in        2016-10-25 00:07:15 UTC (rev 207789)
+++ trunk/Source/WebCore/css/SelectorPseudoClassAndCompatibilityElementMap.in        2016-10-25 00:11:38 UTC (rev 207790)
</span><span class="lines">@@ -1,5 +1,4 @@
</span><span class="cx"> -khtml-drag
</span><del>--webkit-any
</del><span class="cx"> -webkit-any(
</span><span class="cx"> -webkit-any-link, PseudoClassAnyLinkDeprecated, PseudoElementUnknown
</span><span class="cx"> -webkit-autofill
</span><span class="lines">@@ -14,7 +13,6 @@
</span><span class="cx"> decrement
</span><span class="cx"> default
</span><span class="cx"> #if ENABLE(CSS_SELECTORS_LEVEL4)
</span><del>-dir
</del><span class="cx"> dir(
</span><span class="cx"> #endif
</span><span class="cx"> disabled
</span><span class="lines">@@ -35,23 +33,16 @@
</span><span class="cx"> increment
</span><span class="cx"> indeterminate
</span><span class="cx"> invalid
</span><del>-lang
</del><span class="cx"> lang(
</span><span class="cx"> last-child
</span><span class="cx"> last-of-type
</span><span class="cx"> link
</span><del>-matches
</del><span class="cx"> matches(
</span><span class="cx"> no-button
</span><del>-not
</del><span class="cx"> not(
</span><del>-nth-child
</del><span class="cx"> nth-child(
</span><del>-nth-last-child
</del><span class="cx"> nth-last-child(
</span><del>-nth-last-of-type
</del><span class="cx"> nth-last-of-type(
</span><del>-nth-of-type
</del><span class="cx"> nth-of-type(
</span><span class="cx"> only-child
</span><span class="cx"> only-of-type
</span><span class="lines">@@ -62,7 +53,6 @@
</span><span class="cx"> read-write
</span><span class="cx"> required
</span><span class="cx"> #if ENABLE(CSS_SELECTORS_LEVEL4)
</span><del>-role
</del><span class="cx"> role(
</span><span class="cx"> #endif
</span><span class="cx"> root
</span></span></pre></div>
<a id="trunkSourceWebCorecssparserCSSParserValuescpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/css/parser/CSSParserValues.cpp (207789 => 207790)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/css/parser/CSSParserValues.cpp        2016-10-25 00:07:15 UTC (rev 207789)
+++ trunk/Source/WebCore/css/parser/CSSParserValues.cpp        2016-10-25 00:11:38 UTC (rev 207790)
</span><span class="lines">@@ -410,13 +410,7 @@
</span><span class="cx">         argumentList-&gt;append(languageArgument);
</span><span class="cx">     m_selector-&gt;setLangArgumentList(WTFMove(argumentList));
</span><span class="cx"> }
</span><del>-
-void CSSParserSelector::setLangArgumentList(std::unique_ptr&lt;Vector&lt;AtomicString&gt;&gt; argumentList)
-{
-    ASSERT_WITH_MESSAGE(!argumentList-&gt;isEmpty(), &quot;No CSS Selector takes an empty argument list.&quot;);
-    m_selector-&gt;setLangArgumentList(WTFMove(argumentList));
-}
-
</del><ins>+    
</ins><span class="cx"> void CSSParserSelector::setSelectorList(std::unique_ptr&lt;CSSSelectorList&gt; selectorList)
</span><span class="cx"> {
</span><span class="cx">     m_selector-&gt;setSelectorList(WTFMove(selectorList));
</span></span></pre></div>
<a id="trunkSourceWebCorecssparserCSSParserValuesh"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/css/parser/CSSParserValues.h (207789 => 207790)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/css/parser/CSSParserValues.h        2016-10-25 00:07:15 UTC (rev 207789)
+++ trunk/Source/WebCore/css/parser/CSSParserValues.h        2016-10-25 00:11:38 UTC (rev 207790)
</span><span class="lines">@@ -235,7 +235,6 @@
</span><span class="cx"> 
</span><span class="cx">     void adoptSelectorVector(Vector&lt;std::unique_ptr&lt;CSSParserSelector&gt;&gt;&amp; selectorVector);
</span><span class="cx">     void setLangArgumentList(const Vector&lt;CSSParserString&gt;&amp; stringVector);
</span><del>-    void setLangArgumentList(std::unique_ptr&lt;Vector&lt;AtomicString&gt;&gt;);
</del><span class="cx">     void setSelectorList(std::unique_ptr&lt;CSSSelectorList&gt;);
</span><span class="cx"> 
</span><span class="cx">     void setPseudoClassValue(const CSSParserString&amp; pseudoClassString);
</span></span></pre></div>
<a id="trunkSourceWebCorecssparserCSSSelectorParsercpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/css/parser/CSSSelectorParser.cpp (207789 => 207790)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/css/parser/CSSSelectorParser.cpp        2016-10-25 00:07:15 UTC (rev 207789)
+++ trunk/Source/WebCore/css/parser/CSSSelectorParser.cpp        2016-10-25 00:11:38 UTC (rev 207790)
</span><span class="lines">@@ -100,23 +100,6 @@
</span><span class="cx">     return list;
</span><span class="cx"> }
</span><span class="cx"> 
</span><del>-static void consumeLangArgumentList(std::unique_ptr&lt;Vector&lt;AtomicString&gt;&gt;&amp; argumentList, CSSParserTokenRange&amp; range)
-{
-    const CSSParserToken&amp; ident = range.consumeIncludingWhitespace();
-    if (ident.type() != IdentToken)
-        return;
-    argumentList-&gt;append(ident.value().toAtomicString());
-    while (!range.atEnd() &amp;&amp; range.peek().type() == CommaToken) {
-        range.consumeIncludingWhitespace();
-        const CSSParserToken&amp; ident = range.consumeIncludingWhitespace();
-        if (ident.type() != IdentToken) {
-            argumentList-&gt;clear();
-            return;
-        }
-        argumentList-&gt;append(ident.value().toAtomicString());
-    }
-}
-    
</del><span class="cx"> namespace {
</span><span class="cx"> 
</span><span class="cx"> enum CompoundSelectorFlags {
</span><span class="lines">@@ -486,84 +469,79 @@
</span><span class="cx">     if (token.type() != FunctionToken)
</span><span class="cx">         return nullptr;
</span><span class="cx"> 
</span><del>-    if (selector-&gt;match() == CSSSelector::PseudoClass) {
-        switch (selector-&gt;pseudoClassType()) {
-        case CSSSelector::PseudoClassNot: {
-            std::unique_ptr&lt;CSSParserSelector&gt; innerSelector = consumeCompoundSelector(block);
-            block.consumeWhitespace();
-            if (!innerSelector || !block.atEnd())
-                return nullptr;
-            Vector&lt;std::unique_ptr&lt;CSSParserSelector&gt;&gt; selectorVector;
-            selectorVector.append(WTFMove(innerSelector));
-            selector-&gt;adoptSelectorVector(selectorVector);
-            return selector;
-        }
-        case CSSSelector::PseudoClassNthChild:
-        case CSSSelector::PseudoClassNthLastChild:
-        case CSSSelector::PseudoClassNthOfType:
-        case CSSSelector::PseudoClassNthLastOfType: {
-            std::pair&lt;int, int&gt; ab;
-            if (!consumeANPlusB(block, ab))
-                return nullptr;
-            block.consumeWhitespace();
-            if (!block.atEnd())
-                return nullptr;
-            selector-&gt;setArgument(AtomicString::number(ab.first * ab.second));
-            return selector;
-        }
-        case CSSSelector::PseudoClassLang: {
-            // FIXME: CSS Selectors Level 4 allows :lang(*-foo)
-            auto argumentList = std::make_unique&lt;Vector&lt;AtomicString&gt;&gt;();
-            consumeLangArgumentList(argumentList, block);
-            if (argumentList-&gt;isEmpty())
-                return nullptr;
-            selector-&gt;setLangArgumentList(WTFMove(argumentList));
-            return selector;
-        }
-        // FIXME-NEWPARSER: Support :host-context
-        case CSSSelector::PseudoClassAny:
-        case CSSSelector::PseudoClassHost: {
-            DisallowPseudoElementsScope scope(this);
-            std::unique_ptr&lt;CSSSelectorList&gt; selectorList = std::unique_ptr&lt;CSSSelectorList&gt;(new CSSSelectorList());
-            *selectorList = consumeCompoundSelectorList(block);
-            if (!selectorList-&gt;isValid() || !block.atEnd())
-                return nullptr;
-            selector-&gt;setSelectorList(WTFMove(selectorList));
-            return selector;
-        }
-        default:
-            break;
-        }
</del><ins>+    switch (selector-&gt;pseudoClassType()) {
+    case CSSSelector::PseudoClassNot: {
+        std::unique_ptr&lt;CSSParserSelector&gt; innerSelector = consumeCompoundSelector(block);
+        block.consumeWhitespace();
+        if (!innerSelector || !block.atEnd())
+            return nullptr;
+        Vector&lt;std::unique_ptr&lt;CSSParserSelector&gt;&gt; selectorVector;
+        selectorVector.append(WTFMove(innerSelector));
+        selector-&gt;adoptSelectorVector(selectorVector);
+        return selector;
</ins><span class="cx">     }
</span><del>-    
-    if (selector-&gt;match() == CSSSelector::PseudoElement) {
-        switch (selector-&gt;pseudoElementType()) {
-        case CSSSelector::PseudoElementCue: {
-            DisallowPseudoElementsScope scope(this);
-            std::unique_ptr&lt;CSSSelectorList&gt; selectorList = std::unique_ptr&lt;CSSSelectorList&gt;(new CSSSelectorList());
-            *selectorList = consumeCompoundSelectorList(block);
-            if (!selectorList-&gt;isValid() || !block.atEnd())
-                return nullptr;
-            selector-&gt;setSelectorList(WTFMove(selectorList));
-            return selector;
-        }
-        case CSSSelector::PseudoElementSlotted: {
-            DisallowPseudoElementsScope scope(this);
</del><ins>+    case CSSSelector::PseudoClassNthChild:
+    case CSSSelector::PseudoClassNthLastChild:
+    case CSSSelector::PseudoClassNthOfType:
+    case CSSSelector::PseudoClassNthLastOfType: {
+        std::pair&lt;int, int&gt; ab;
+        if (!consumeANPlusB(block, ab))
+            return nullptr;
+        block.consumeWhitespace();
+        if (!block.atEnd())
+            return nullptr;
+        selector-&gt;setArgument(AtomicString::number(ab.first * ab.second));
+        return selector;
+    }
+    case CSSSelector::PseudoClassLang: {
+        // FIXME: CSS Selectors Level 4 allows :lang(*-foo)
+        const CSSParserToken&amp; ident = block.consumeIncludingWhitespace();
+        if (ident.type() != IdentToken || !block.atEnd())
+            return nullptr;
+        selector-&gt;setArgument(ident.value().toAtomicString());
+        return selector;
+    }
+    // FIXME-NEWPARSER: Support :host-context
+    case CSSSelector::PseudoClassAny:
+    case CSSSelector::PseudoClassHost: {
+        DisallowPseudoElementsScope scope(this);
+        std::unique_ptr&lt;CSSSelectorList&gt; selectorList = std::unique_ptr&lt;CSSSelectorList&gt;(new CSSSelectorList());
+        *selectorList = consumeCompoundSelectorList(block);
+        if (!selectorList-&gt;isValid() || !block.atEnd())
+            return nullptr;
+        selector-&gt;setSelectorList(WTFMove(selectorList));
+        return selector;
+    }
+    default:
+        break;
+    }
</ins><span class="cx"> 
</span><del>-            std::unique_ptr&lt;CSSParserSelector&gt; innerSelector = consumeCompoundSelector(block);
-            block.consumeWhitespace();
-            if (!innerSelector || !block.atEnd())
-                return nullptr;
-            Vector&lt;std::unique_ptr&lt;CSSParserSelector&gt;&gt; selectorVector;
-            selectorVector.append(WTFMove(innerSelector));
-            selector-&gt;adoptSelectorVector(selectorVector);
-            return selector;
-        }
-        default:
-            break;
-        }
</del><ins>+    switch (selector-&gt;pseudoElementType()) {
+    case CSSSelector::PseudoElementCue: {
+        DisallowPseudoElementsScope scope(this);
+        std::unique_ptr&lt;CSSSelectorList&gt; selectorList = std::unique_ptr&lt;CSSSelectorList&gt;(new CSSSelectorList());
+        *selectorList = consumeCompoundSelectorList(block);
+        if (!selectorList-&gt;isValid() || !block.atEnd())
+            return nullptr;
+        selector-&gt;setSelectorList(WTFMove(selectorList));
+        return selector;
</ins><span class="cx">     }
</span><ins>+    case CSSSelector::PseudoElementSlotted: {
+        DisallowPseudoElementsScope scope(this);
</ins><span class="cx"> 
</span><ins>+        std::unique_ptr&lt;CSSParserSelector&gt; innerSelector = consumeCompoundSelector(block);
+        block.consumeWhitespace();
+        if (!innerSelector || !block.atEnd())
+            return nullptr;
+        Vector&lt;std::unique_ptr&lt;CSSParserSelector&gt;&gt; selectorVector;
+        selectorVector.append(WTFMove(innerSelector));
+        selector-&gt;adoptSelectorVector(selectorVector);
+        return selector;
+    }
+    default:
+        break;
+    }
+
</ins><span class="cx">     return nullptr;
</span><span class="cx"> }
</span><span class="cx"> 
</span></span></pre>
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