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<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/237580">237580</a></dd>
<dt>Author</dt> <dd>zalan@apple.com</dd>
<dt>Date</dt> <dd>2018-10-29 21:00:17 -0700 (Mon, 29 Oct 2018)</dd>
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<h3>Log Message</h3>
<pre>Missing from <a href="http://trac.webkit.org/projects/webkit/changeset/237549">r237549</a>

* layout/blockformatting/BlockFormattingContext.cpp:
(WebCore::Layout::BlockFormattingContext::precomputeVerticalPositionForFormattingRootIfNeeded const):
(WebCore::Layout::hasPrecomputedMarginTop):</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkSourceWebCoreChangeLog">trunk/Source/WebCore/ChangeLog</a></li>
<li><a href="#trunkSourceWebCorelayoutblockformattingBlockFormattingContextcpp">trunk/Source/WebCore/layout/blockformatting/BlockFormattingContext.cpp</a></li>
</ul>

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<h3>Diff</h3>
<a id="trunkSourceWebCoreChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/ChangeLog (237579 => 237580)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/ChangeLog   2018-10-30 03:35:07 UTC (rev 237579)
+++ trunk/Source/WebCore/ChangeLog      2018-10-30 04:00:17 UTC (rev 237580)
</span><span class="lines">@@ -1,3 +1,11 @@
</span><ins>+2018-10-29  Zalan Bujtas  <zalan@apple.com>
+
+        Missing from r237549
+
+        * layout/blockformatting/BlockFormattingContext.cpp:
+        (WebCore::Layout::BlockFormattingContext::precomputeVerticalPositionForFormattingRootIfNeeded const):
+        (WebCore::Layout::hasPrecomputedMarginTop):
+
</ins><span class="cx"> 2018-10-29  Ross Kirsling  <ross.kirsling@sony.com>
</span><span class="cx"> 
</span><span class="cx">         Unreviewed speculative build fix for AppleWin after r237559.
</span></span></pre></div>
<a id="trunkSourceWebCorelayoutblockformattingBlockFormattingContextcpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/layout/blockformatting/BlockFormattingContext.cpp (237579 => 237580)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/layout/blockformatting/BlockFormattingContext.cpp   2018-10-30 03:35:07 UTC (rev 237579)
+++ trunk/Source/WebCore/layout/blockformatting/BlockFormattingContext.cpp      2018-10-30 04:00:17 UTC (rev 237580)
</span><span class="lines">@@ -198,8 +198,8 @@
</span><span class="cx"> {
</span><span class="cx">     ASSERT(layoutBox.establishesFormattingContext());
</span><span class="cx"> 
</span><del>-    auto avoidsFloats = (layoutBox.establishesBlockFormattingContext() && !layoutBox.establishesInlineFormattingContext()) || layoutBox.hasFloatClear();
-    if (layoutBox.isFloatingPositioned() || avoidsFloats)
</del><ins>+    auto avoidsFloats = layoutBox.isFloatingPositioned() || layoutBox.establishesBlockFormattingContext() || layoutBox.hasFloatClear();
+    if (avoidsFloats)
</ins><span class="cx">         computeEstimatedMarginTopForAncestors(layoutContext, layoutBox);
</span><span class="cx"> 
</span><span class="cx">     // If the inline formatting root is also the root for the floats (happens when the root box also establishes a block formatting context)
</span><span class="lines">@@ -214,8 +214,12 @@
</span><span class="cx"> #ifndef NDEBUG
</span><span class="cx"> static bool hasPrecomputedMarginTop(const LayoutContext& layoutContext, const Box& layoutBox)
</span><span class="cx"> {
</span><del>-    for (auto* ancestor = layoutBox.containingBlock(); ancestor && !ancestor->establishesBlockFormattingContext(); ancestor = ancestor->containingBlock())
-        ASSERT(displayBox.layoutContext.displayBoxForLayoutBox(*ancestor).estimatedMarginTop());
</del><ins>+    for (auto* ancestor = layoutBox.containingBlock(); ancestor && !ancestor->establishesBlockFormattingContext(); ancestor = ancestor->containingBlock()) {
+        if (layoutContext.displayBoxForLayoutBox(*ancestor).estimatedMarginTop())
+            continue;
+        return false;
+    }
+    return true;
</ins><span class="cx"> }
</span><span class="cx"> #endif
</span><span class="cx"> 
</span></span></pre>
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