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<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/277310">277310</a></dd>
<dt>Author</dt> <dd>repstein@apple.com</dd>
<dt>Date</dt> <dd>2021-05-10 17:35:40 -0700 (Mon, 10 May 2021)</dd>
</dl>
<h3>Log Message</h3>
<pre>Cherry-pick <a href="http://trac.webkit.org/projects/webkit/changeset/277297">r277297</a>. rdar://problem/77797456
Unreviewed, reverting <a href="http://trac.webkit.org/projects/webkit/changeset/277222">r277222</a>.
https://bugs.webkit.org/show_bug.cgi?id=225618
WebContent process crashes while visiting
<http://ign.com|ign.com> (RenderFlexibleBox::layoutFlexItems)
Reverted changeset:
"[css-flexbox] Flex item construction may affect sibling flex
item height computation"
https://bugs.webkit.org/show_bug.cgi?id=225489
https://trac.webkit.org/changeset/277222
git-svn-id: https://svn.webkit.org/repository/webkit/trunk@277297 268f45cc-cd09-0410-ab3c-d52691b4dbfc</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#branchessafari612114branchLayoutTestsChangeLog">branches/safari-612.1.14-branch/LayoutTests/ChangeLog</a></li>
<li><a href="#branchessafari612114branchSourceWebCoreChangeLog">branches/safari-612.1.14-branch/Source/WebCore/ChangeLog</a></li>
<li><a href="#branchessafari612114branchSourceWebCorerenderingRenderFlexibleBoxcpp">branches/safari-612.1.14-branch/Source/WebCore/rendering/RenderFlexibleBox.cpp</a></li>
<li><a href="#branchessafari612114branchSourceWebCorerenderingRenderFlexibleBoxh">branches/safari-612.1.14-branch/Source/WebCore/rendering/RenderFlexibleBox.h</a></li>
</ul>
<h3>Removed Paths</h3>
<ul>
<li><a href="#branchessafari612114branchLayoutTestsfastflexboxflexcolumnwithpercentheightdescendantsexpectedhtml">branches/safari-612.1.14-branch/LayoutTests/fast/flexbox/flex-column-with-percent-height-descendants-expected.html</a></li>
<li><a href="#branchessafari612114branchLayoutTestsfastflexboxflexcolumnwithpercentheightdescendantshtml">branches/safari-612.1.14-branch/LayoutTests/fast/flexbox/flex-column-with-percent-height-descendants.html</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="branchessafari612114branchLayoutTestsChangeLog"></a>
<div class="modfile"><h4>Modified: branches/safari-612.1.14-branch/LayoutTests/ChangeLog (277309 => 277310)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-612.1.14-branch/LayoutTests/ChangeLog 2021-05-11 00:25:26 UTC (rev 277309)
+++ branches/safari-612.1.14-branch/LayoutTests/ChangeLog 2021-05-11 00:35:40 UTC (rev 277310)
</span><span class="lines">@@ -1,3 +1,37 @@
</span><ins>+2021-05-10 Russell Epstein <repstein@apple.com>
+
+ Cherry-pick r277297. rdar://problem/77797456
+
+ Unreviewed, reverting r277222.
+ https://bugs.webkit.org/show_bug.cgi?id=225618
+
+ WebContent process crashes while visiting
+ <http://ign.com|ign.com> (RenderFlexibleBox::layoutFlexItems)
+
+ Reverted changeset:
+
+ "[css-flexbox] Flex item construction may affect sibling flex
+ item height computation"
+ https://bugs.webkit.org/show_bug.cgi?id=225489
+ https://trac.webkit.org/changeset/277222
+
+ git-svn-id: https://svn.webkit.org/repository/webkit/trunk@277297 268f45cc-cd09-0410-ab3c-d52691b4dbfc
+
+ 2021-05-10 Commit Queue <commit-queue@webkit.org>
+
+ Unreviewed, reverting r277222.
+ https://bugs.webkit.org/show_bug.cgi?id=225618
+
+ WebContent process crashes while visiting
+ <http://ign.com|ign.com> (RenderFlexibleBox::layoutFlexItems)
+
+ Reverted changeset:
+
+ "[css-flexbox] Flex item construction may affect sibling flex
+ item height computation"
+ https://bugs.webkit.org/show_bug.cgi?id=225489
+ https://trac.webkit.org/changeset/277222
+
</ins><span class="cx"> 2021-05-08 Ricky Mondello <rmondello@apple.com>
</span><span class="cx">
</span><span class="cx"> Fix a typo
</span></span></pre></div>
<a id="branchessafari612114branchLayoutTestsfastflexboxflexcolumnwithpercentheightdescendantsexpectedhtml"></a>
<div class="delfile"><h4>Deleted: branches/safari-612.1.14-branch/LayoutTests/fast/flexbox/flex-column-with-percent-height-descendants-expected.html (277309 => 277310)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-612.1.14-branch/LayoutTests/fast/flexbox/flex-column-with-percent-height-descendants-expected.html 2021-05-11 00:25:26 UTC (rev 277309)
+++ branches/safari-612.1.14-branch/LayoutTests/fast/flexbox/flex-column-with-percent-height-descendants-expected.html 2021-05-11 00:35:40 UTC (rev 277310)
</span><span class="lines">@@ -1,8 +0,0 @@
</span><del>-<!DOCTYPE html>
-<style>
-div {
- height: 100px;
- background-color: green;
-}
-</style>
-<div></div>
</del></span></pre></div>
<a id="branchessafari612114branchLayoutTestsfastflexboxflexcolumnwithpercentheightdescendantshtml"></a>
<div class="delfile"><h4>Deleted: branches/safari-612.1.14-branch/LayoutTests/fast/flexbox/flex-column-with-percent-height-descendants.html (277309 => 277310)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-612.1.14-branch/LayoutTests/fast/flexbox/flex-column-with-percent-height-descendants.html 2021-05-11 00:25:26 UTC (rev 277309)
+++ branches/safari-612.1.14-branch/LayoutTests/fast/flexbox/flex-column-with-percent-height-descendants.html 2021-05-11 00:35:40 UTC (rev 277310)
</span><span class="lines">@@ -1,25 +0,0 @@
</span><del>-<!DOCTYPE html>
-<style>
-.flexContainer {
- display: flex;
- flex-direction: column;
- position: relative;
- height: 100px;
-}
-.firstChild {
- background-color: yellow;
- height: 50px;
-}
-.secondChild {
- height: 50%;
- background-color: green;
-}
-.percentHeightDescendant {
- height: 100%;
- background-color: green
-}
-</style>
-<div class=flexContainer>
- <div class=firstChild><div class=percentHeightDescendant></div></div>
- <div class=secondChild></div>
-</div>
</del></span></pre></div>
<a id="branchessafari612114branchSourceWebCoreChangeLog"></a>
<div class="modfile"><h4>Modified: branches/safari-612.1.14-branch/Source/WebCore/ChangeLog (277309 => 277310)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-612.1.14-branch/Source/WebCore/ChangeLog 2021-05-11 00:25:26 UTC (rev 277309)
+++ branches/safari-612.1.14-branch/Source/WebCore/ChangeLog 2021-05-11 00:35:40 UTC (rev 277310)
</span><span class="lines">@@ -1,3 +1,37 @@
</span><ins>+2021-05-10 Russell Epstein <repstein@apple.com>
+
+ Cherry-pick r277297. rdar://problem/77797456
+
+ Unreviewed, reverting r277222.
+ https://bugs.webkit.org/show_bug.cgi?id=225618
+
+ WebContent process crashes while visiting
+ <http://ign.com|ign.com> (RenderFlexibleBox::layoutFlexItems)
+
+ Reverted changeset:
+
+ "[css-flexbox] Flex item construction may affect sibling flex
+ item height computation"
+ https://bugs.webkit.org/show_bug.cgi?id=225489
+ https://trac.webkit.org/changeset/277222
+
+ git-svn-id: https://svn.webkit.org/repository/webkit/trunk@277297 268f45cc-cd09-0410-ab3c-d52691b4dbfc
+
+ 2021-05-10 Commit Queue <commit-queue@webkit.org>
+
+ Unreviewed, reverting r277222.
+ https://bugs.webkit.org/show_bug.cgi?id=225618
+
+ WebContent process crashes while visiting
+ <http://ign.com|ign.com> (RenderFlexibleBox::layoutFlexItems)
+
+ Reverted changeset:
+
+ "[css-flexbox] Flex item construction may affect sibling flex
+ item height computation"
+ https://bugs.webkit.org/show_bug.cgi?id=225489
+ https://trac.webkit.org/changeset/277222
+
</ins><span class="cx"> 2021-05-09 Lauro Moura <lmoura@igalia.com>
</span><span class="cx">
</span><span class="cx"> [WebXR] Remove reference cycle in WebXRSession
</span></span></pre></div>
<a id="branchessafari612114branchSourceWebCorerenderingRenderFlexibleBoxcpp"></a>
<div class="modfile"><h4>Modified: branches/safari-612.1.14-branch/Source/WebCore/rendering/RenderFlexibleBox.cpp (277309 => 277310)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-612.1.14-branch/Source/WebCore/rendering/RenderFlexibleBox.cpp 2021-05-11 00:25:26 UTC (rev 277309)
+++ branches/safari-612.1.14-branch/Source/WebCore/rendering/RenderFlexibleBox.cpp 2021-05-11 00:35:40 UTC (rev 277310)
</span><span class="lines">@@ -268,6 +268,9 @@
</span><span class="cx"> resetLogicalHeightBeforeLayoutIfNeeded();
</span><span class="cx"> m_relaidOutChildren.clear();
</span><span class="cx">
</span><ins>+ bool oldInLayout = m_inLayout;
+ m_inLayout = true;
+
</ins><span class="cx"> if (recomputeLogicalWidth())
</span><span class="cx"> relayoutChildren = true;
</span><span class="cx">
</span><span class="lines">@@ -318,6 +321,8 @@
</span><span class="cx"> repainter.repaintAfterLayout();
</span><span class="cx">
</span><span class="cx"> clearNeedsLayout();
</span><ins>+
+ m_inLayout = oldInLayout;
</ins><span class="cx"> }
</span><span class="cx">
</span><span class="cx"> void RenderFlexibleBox::appendChildFrameRects(ChildFrameRects& childFrameRects)
</span><span class="lines">@@ -840,7 +845,7 @@
</span><span class="cx"> if (m_hasDefiniteHeight == SizeDefiniteness::Indefinite)
</span><span class="cx"> return false;
</span><span class="cx"> bool definite = child.computePercentageLogicalHeight(flexBasis, updateDescendants).hasValue();
</span><del>- if (!m_inFlexItemConstruction && (isHorizontalWritingMode() == child.isHorizontalWritingMode())) {
</del><ins>+ if (m_inLayout && (isHorizontalWritingMode() == child.isHorizontalWritingMode())) {
</ins><span class="cx"> // We can reach this code even while we're not laying ourselves out, such
</span><span class="cx"> // as from mainSizeForPercentageResolution.
</span><span class="cx"> m_hasDefiniteHeight = definite ? SizeDefiniteness::Definite : SizeDefiniteness::Indefinite;
</span><span class="lines">@@ -960,7 +965,21 @@
</span><span class="cx"> // Set up our master list of flex items. All of the rest of the algorithm
</span><span class="cx"> // should work off this list of a subset.
</span><span class="cx"> // TODO(cbiesinger): That second part is not yet true.
</span><del>- auto allItems = constructFlexItems(relayoutChildren);
</del><ins>+ Vector<FlexItem> allItems;
+ m_orderIterator.first();
+ for (RenderBox* child = m_orderIterator.currentChild(); child; child = m_orderIterator.next()) {
+ if (m_orderIterator.shouldSkipChild(*child)) {
+ // Out-of-flow children are not flex items, so we skip them here.
+ if (child->isOutOfFlowPositioned())
+ prepareChildForPositionedLayout(*child);
+ continue;
+ }
+ allItems.append(constructFlexItem(*child, relayoutChildren));
+ }
+
+ // constructFlexItem() might set the override containing block height so any value cached for definiteness might be incorrect.
+ m_hasDefiniteHeight = SizeDefiniteness::Unknown;
+
</ins><span class="cx"> const LayoutUnit lineBreakLength = mainAxisContentExtent(LayoutUnit::max());
</span><span class="cx"> LayoutUnit gapBetweenItems = computeGap(GapType::BetweenItems);
</span><span class="cx"> LayoutUnit gapBetweenLines = computeGap(GapType::BetweenLines);
</span><span class="lines">@@ -1275,52 +1294,36 @@
</span><span class="cx"> return childSize;
</span><span class="cx"> }
</span><span class="cx">
</span><del>-Vector<FlexItem> RenderFlexibleBox::constructFlexItems(bool relayoutChildren)
</del><ins>+FlexItem RenderFlexibleBox::constructFlexItem(RenderBox& child, bool relayoutChildren)
</ins><span class="cx"> {
</span><del>- SetForScope<bool> inFlexItemConstruction(m_inFlexItemConstruction, true);
-
- Vector<FlexItem> flexItems;
- for (auto* child = m_orderIterator.first(); child; child = m_orderIterator.next()) {
- if (m_orderIterator.shouldSkipChild(*child)) {
- // Out-of-flow children are not flex items, so we skip them here.
- if (child->isOutOfFlowPositioned())
- prepareChildForPositionedLayout(*child);
- continue;
</del><ins>+ child.clearOverridingContentSize();
+ if (childHasIntrinsicMainAxisSize(child)) {
+ // If this condition is true, then computeMainAxisExtentForChild will call
+ // child.intrinsicContentLogicalHeight() and child.scrollbarLogicalHeight(),
+ // so if the child has intrinsic min/max/preferred size, run layout on it now to make sure
+ // its logical height and scroll bars are up to date.
+ updateBlockChildDirtyBitsBeforeLayout(relayoutChildren, child);
+ // Don't resolve percentages in children. This is especially important for the min-height calculation,
+ // where we want percentages to be treated as auto. For flex-basis itself, this is not a problem because
+ // by definition we have an indefinite flex basis here and thus percentages should not resolve.
+ if (child.needsLayout() || !m_intrinsicSizeAlongMainAxis.contains(&child)) {
+ if (isHorizontalWritingMode() == child.isHorizontalWritingMode())
+ child.setOverridingContainingBlockContentLogicalHeight(WTF::nullopt);
+ else
+ child.setOverridingContainingBlockContentLogicalWidth(WTF::nullopt);
+ child.clearOverridingContentSize();
+ child.setChildNeedsLayout(MarkOnlyThis);
+ child.layoutIfNeeded();
+ cacheChildMainSize(child);
+ child.clearOverridingContainingBlockContentSize();
</ins><span class="cx"> }
</span><del>-
- auto constructFlexItemForChildBox = [&](auto& childBox) {
- childBox.clearOverridingContentSize();
- if (childHasIntrinsicMainAxisSize(childBox)) {
- // If this condition is true, then computeMainAxisExtentForChild will call
- // child.intrinsicContentLogicalHeight() and child.scrollbarLogicalHeight(),
- // so if the child has intrinsic min/max/preferred size, run layout on it now to make sure
- // its logical height and scroll bars are up to date.
- updateBlockChildDirtyBitsBeforeLayout(relayoutChildren, childBox);
- // Don't resolve percentages in children. This is especially important for the min-height calculation,
- // where we want percentages to be treated as auto. For flex-basis itself, this is not a problem because
- // by definition we have an indefinite flex basis here and thus percentages should not resolve.
- if (childBox.needsLayout() || !m_intrinsicSizeAlongMainAxis.contains(&childBox)) {
- if (isHorizontalWritingMode() == childBox.isHorizontalWritingMode())
- childBox.setOverridingContainingBlockContentLogicalHeight(WTF::nullopt);
- else
- childBox.setOverridingContainingBlockContentLogicalWidth(WTF::nullopt);
- childBox.clearOverridingContentSize();
- childBox.setChildNeedsLayout(MarkOnlyThis);
- childBox.layoutIfNeeded();
- cacheChildMainSize(childBox);
- childBox.clearOverridingContainingBlockContentSize();
- }
- }
-
- auto borderAndPadding = isHorizontalFlow() ? childBox.horizontalBorderAndPaddingExtent() : childBox.verticalBorderAndPaddingExtent();
- auto childInnerFlexBaseSize = computeInnerFlexBaseSizeForChild(childBox, borderAndPadding);
- auto childMinMaxAppliedMainAxisExtent = adjustChildSizeForMinAndMax(childBox, childInnerFlexBaseSize);
- auto margin = isHorizontalFlow() ? childBox.horizontalMarginExtent() : childBox.verticalMarginExtent();
- return FlexItem(childBox, childInnerFlexBaseSize, childMinMaxAppliedMainAxisExtent, borderAndPadding, margin);
- };
- flexItems.append(constructFlexItemForChildBox(*child));
</del><span class="cx"> }
</span><del>- return flexItems;
</del><ins>+
+ LayoutUnit borderAndPadding = isHorizontalFlow() ? child.horizontalBorderAndPaddingExtent() : child.verticalBorderAndPaddingExtent();
+ LayoutUnit childInnerFlexBaseSize = computeInnerFlexBaseSizeForChild(child, borderAndPadding);
+ LayoutUnit childMinMaxAppliedMainAxisExtent = adjustChildSizeForMinAndMax(child, childInnerFlexBaseSize);
+ LayoutUnit margin = isHorizontalFlow() ? child.horizontalMarginExtent() : child.verticalMarginExtent();
+ return FlexItem(child, childInnerFlexBaseSize, childMinMaxAppliedMainAxisExtent, borderAndPadding, margin);
</ins><span class="cx"> }
</span><span class="cx">
</span><span class="cx"> void RenderFlexibleBox::freezeViolations(Vector<FlexItem*>& violations, LayoutUnit& availableFreeSpace, double& totalFlexGrow, double& totalFlexShrink, double& totalWeightedFlexShrink)
</span></span></pre></div>
<a id="branchessafari612114branchSourceWebCorerenderingRenderFlexibleBoxh"></a>
<div class="modfile"><h4>Modified: branches/safari-612.1.14-branch/Source/WebCore/rendering/RenderFlexibleBox.h (277309 => 277310)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-612.1.14-branch/Source/WebCore/rendering/RenderFlexibleBox.h 2021-05-11 00:25:26 UTC (rev 277309)
+++ branches/safari-612.1.14-branch/Source/WebCore/rendering/RenderFlexibleBox.h 2021-05-11 00:35:40 UTC (rev 277310)
</span><span class="lines">@@ -175,7 +175,7 @@
</span><span class="cx"> void prepareOrderIteratorAndMargins();
</span><span class="cx"> LayoutUnit adjustChildSizeForMinAndMax(RenderBox& child, LayoutUnit childSize);
</span><span class="cx"> LayoutUnit adjustChildSizeForAspectRatioCrossAxisMinAndMax(const RenderBox& child, LayoutUnit childSize);
</span><del>- Vector<FlexItem> constructFlexItems(bool relayoutChildren);
</del><ins>+ FlexItem constructFlexItem(RenderBox&, bool relayoutChildren);
</ins><span class="cx">
</span><span class="cx"> void freezeInflexibleItems(FlexSign, Vector<FlexItem>& children, LayoutUnit& remainingFreeSpace, double& totalFlexGrow, double& totalFlexShrink, double& totalWeightedFlexShrink);
</span><span class="cx"> bool resolveFlexibleLengths(FlexSign, Vector<FlexItem>&, LayoutUnit initialFreeSpace, LayoutUnit& remainingFreeSpace, double& totalFlexGrow, double& totalFlexShrink, double& totalWeightedFlexShrink);
</span><span class="lines">@@ -220,7 +220,7 @@
</span><span class="cx">
</span><span class="cx"> // This is SizeIsUnknown outside of layoutBlock()
</span><span class="cx"> SizeDefiniteness m_hasDefiniteHeight { SizeDefiniteness::Unknown };
</span><del>- bool m_inFlexItemConstruction { false };
</del><ins>+ bool m_inLayout { false };
</ins><span class="cx"> bool m_shouldResetChildLogicalHeightBeforeLayout { false };
</span><span class="cx"> };
</span><span class="cx">
</span></span></pre>
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