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<div id="msg">
<dl class="meta">
<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/186841">186841</a></dd>
<dt>Author</dt> <dd>matthew_hanson@apple.com</dd>
<dt>Date</dt> <dd>2015-07-15 09:04:12 -0700 (Wed, 15 Jul 2015)</dd>
</dl>
<h3>Log Message</h3>
<pre>Merge <a href="http://trac.webkit.org/projects/webkit/changeset/186746">r186746</a>. rdar://problem/21716391</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#branchessafari6008branchLayoutTestsChangeLog">branches/safari-600.8-branch/LayoutTests/ChangeLog</a></li>
<li><a href="#branchessafari6008branchSourceWebCoreChangeLog">branches/safari-600.8-branch/Source/WebCore/ChangeLog</a></li>
<li><a href="#branchessafari6008branchSourceWebCorerenderingRenderInlinecpp">branches/safari-600.8-branch/Source/WebCore/rendering/RenderInline.cpp</a></li>
<li><a href="#branchessafari6008branchSourceWebCorerenderingRootInlineBoxcpp">branches/safari-600.8-branch/Source/WebCore/rendering/RootInlineBox.cpp</a></li>
</ul>
<h3>Added Paths</h3>
<ul>
<li><a href="#branchessafari6008branchLayoutTestsfastinlinecrashwhenchildrendererisremovedandlinestayscleanexpectedtxt">branches/safari-600.8-branch/LayoutTests/fast/inline/crash-when-child-renderer-is-removed-and-line-stays-clean-expected.txt</a></li>
<li><a href="#branchessafari6008branchLayoutTestsfastinlinecrashwhenchildrendererisremovedandlinestayscleanhtml">branches/safari-600.8-branch/LayoutTests/fast/inline/crash-when-child-renderer-is-removed-and-line-stays-clean.html</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="branchessafari6008branchLayoutTestsChangeLog"></a>
<div class="modfile"><h4>Modified: branches/safari-600.8-branch/LayoutTests/ChangeLog (186840 => 186841)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-600.8-branch/LayoutTests/ChangeLog        2015-07-15 16:02:39 UTC (rev 186840)
+++ branches/safari-600.8-branch/LayoutTests/ChangeLog        2015-07-15 16:04:12 UTC (rev 186841)
</span><span class="lines">@@ -1,3 +1,26 @@
</span><ins>+2015-07-15 Matthew Hanson <matthew_hanson@apple.com>
+
+ Merge r186746. rdar://problem/21716391
+
+ 2015-07-12 David Kilzer <ddkilzer@apple.com>
+
+ Merge r185572. rdar://problem/21716531
+
+ 2015-06-15 Zalan Bujtas <zalan@apple.com>
+
+ RootInlineBox::m_lineBreakObj becomes invalid when a child renderer is removed and the line does not get marked dirty.
+ https://bugs.webkit.org/show_bug.cgi?id=145988
+ rdar://problem/20959137
+
+ Reviewed by David Hyatt.
+
+ This patch ensures that we find the right first inline box so that we can dirty the
+ the appropriate line boxes.
+ With marking the right line boxes dirty, now we can update RootInlineBox::m_lineBreakObj at the next layout.
+
+ * fast/inline/crash-when-child-renderer-is-removed-and-line-stays-clean-expected.txt: Added.
+ * fast/inline/crash-when-child-renderer-is-removed-and-line-stays-clean.html: Added.
+
</ins><span class="cx"> 2015-07-09 Matthew Hanson <matthew_hanson@apple.com>
</span><span class="cx">
</span><span class="cx"> Merge r186577. rdar://problem/21533109
</span></span></pre></div>
<a id="branchessafari6008branchLayoutTestsfastinlinecrashwhenchildrendererisremovedandlinestayscleanexpectedtxt"></a>
<div class="addfile"><h4>Added: branches/safari-600.8-branch/LayoutTests/fast/inline/crash-when-child-renderer-is-removed-and-line-stays-clean-expected.txt (0 => 186841)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-600.8-branch/LayoutTests/fast/inline/crash-when-child-renderer-is-removed-and-line-stays-clean-expected.txt         (rev 0)
+++ branches/safari-600.8-branch/LayoutTests/fast/inline/crash-when-child-renderer-is-removed-and-line-stays-clean-expected.txt        2015-07-15 16:04:12 UTC (rev 186841)
</span><span class="lines">@@ -0,0 +1,4 @@
</span><ins>+Pass if no crash or assert in Debug. bar
+
+
+
</ins></span></pre></div>
<a id="branchessafari6008branchLayoutTestsfastinlinecrashwhenchildrendererisremovedandlinestayscleanhtml"></a>
<div class="addfile"><h4>Added: branches/safari-600.8-branch/LayoutTests/fast/inline/crash-when-child-renderer-is-removed-and-line-stays-clean.html (0 => 186841)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-600.8-branch/LayoutTests/fast/inline/crash-when-child-renderer-is-removed-and-line-stays-clean.html         (rev 0)
+++ branches/safari-600.8-branch/LayoutTests/fast/inline/crash-when-child-renderer-is-removed-and-line-stays-clean.html        2015-07-15 16:04:12 UTC (rev 186841)
</span><span class="lines">@@ -0,0 +1,22 @@
</span><ins>+<script>
+if (window.testRunner)
+ testRunner.dumpAsText();
+window.onload = function()
+{
+ document.body.offsetTop;
+ b.lastChild.parentNode.removeChild(b.lastChild);
+ document.body.offsetTop;
+ a.firstChild.parentNode.removeChild(a.firstChild);
+}
+</script>
+<body>
+<div id="a">foo</div><div></div>
+<div>Pass if no crash or assert in Debug.
+<output>
+<o&#x0195;tput>bar</output>
+<span id="b">
+<span>
+<div style="display:inline-block"></div>
+<br><br><br>
+</span>
+</body>
</ins></span></pre></div>
<a id="branchessafari6008branchSourceWebCoreChangeLog"></a>
<div class="modfile"><h4>Modified: branches/safari-600.8-branch/Source/WebCore/ChangeLog (186840 => 186841)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-600.8-branch/Source/WebCore/ChangeLog        2015-07-15 16:02:39 UTC (rev 186840)
+++ branches/safari-600.8-branch/Source/WebCore/ChangeLog        2015-07-15 16:04:12 UTC (rev 186841)
</span><span class="lines">@@ -1,3 +1,31 @@
</span><ins>+2015-07-15 Matthew Hanson <matthew_hanson@apple.com>
+
+ Merge r186746. rdar://problem/21716391
+
+ 2015-07-12 David Kilzer <ddkilzer@apple.com>
+
+ Merge r185572. rdar://problem/21716531
+
+ 2015-06-15 Zalan Bujtas <zalan@apple.com>
+
+ RootInlineBox::m_lineBreakObj becomes invalid when a child renderer is removed and the line does not get marked dirty.
+ https://bugs.webkit.org/show_bug.cgi?id=145988
+ rdar://problem/20959137
+
+ Reviewed by David Hyatt.
+
+ This patch ensures that we find the right first inline box so that we can dirty the
+ the appropriate line boxes.
+ With marking the right line boxes dirty, now we can update RootInlineBox::m_lineBreakObj at the next layout.
+
+ Test: fast/inline/crash-when-child-renderer-is-removed-and-line-stays-clean.html
+
+ * rendering/RenderInline.cpp:
+ (WebCore::RenderInline::culledInlineFirstLineBox):
+ (WebCore::RenderInline::culledInlineLastLineBox):
+ * rendering/RootInlineBox.cpp:
+ (WebCore::RootInlineBox::setLineBreakInfo): Deleted. Remove misleading assert and comment.
+
</ins><span class="cx"> 2015-07-09 Matthew Hanson <matthew_hanson@apple.com>
</span><span class="cx">
</span><span class="cx"> Merge r186508. rdar://problem/21707887
</span></span></pre></div>
<a id="branchessafari6008branchSourceWebCorerenderingRenderInlinecpp"></a>
<div class="modfile"><h4>Modified: branches/safari-600.8-branch/Source/WebCore/rendering/RenderInline.cpp (186840 => 186841)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-600.8-branch/Source/WebCore/rendering/RenderInline.cpp        2015-07-15 16:02:39 UTC (rev 186840)
+++ branches/safari-600.8-branch/Source/WebCore/rendering/RenderInline.cpp        2015-07-15 16:04:12 UTC (rev 186841)
</span><span class="lines">@@ -925,9 +925,11 @@
</span><span class="cx">
</span><span class="cx"> // We want to get the margin box in the inline direction, and then use our font ascent/descent in the block
</span><span class="cx"> // direction (aligned to the root box's baseline).
</span><del>- if (curr->isBox())
- return toRenderBox(curr)->inlineBoxWrapper();
- if (curr->isLineBreak()) {
</del><ins>+ if (curr->isBox()) {
+ const RenderBox* renderBox = toRenderBox(curr);
+ if (renderBox->inlineBoxWrapper())
+ return renderBox->inlineBoxWrapper();
+ } else if (curr->isLineBreak()) {
</ins><span class="cx"> RenderLineBreak* renderBR = toRenderLineBreak(curr);
</span><span class="cx"> if (renderBR->inlineBoxWrapper())
</span><span class="cx"> return renderBR->inlineBoxWrapper();
</span><span class="lines">@@ -953,9 +955,11 @@
</span><span class="cx">
</span><span class="cx"> // We want to get the margin box in the inline direction, and then use our font ascent/descent in the block
</span><span class="cx"> // direction (aligned to the root box's baseline).
</span><del>- if (curr->isBox())
- return toRenderBox(curr)->inlineBoxWrapper();
- if (curr->isLineBreak()) {
</del><ins>+ if (curr->isBox()) {
+ const RenderBox* renderBox = toRenderBox(curr);
+ if (renderBox->inlineBoxWrapper())
+ return renderBox->inlineBoxWrapper();
+ } else if (curr->isLineBreak()) {
</ins><span class="cx"> RenderLineBreak* renderBR = toRenderLineBreak(curr);
</span><span class="cx"> if (renderBR->inlineBoxWrapper())
</span><span class="cx"> return renderBR->inlineBoxWrapper();
</span></span></pre></div>
<a id="branchessafari6008branchSourceWebCorerenderingRootInlineBoxcpp"></a>
<div class="modfile"><h4>Modified: branches/safari-600.8-branch/Source/WebCore/rendering/RootInlineBox.cpp (186840 => 186841)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-600.8-branch/Source/WebCore/rendering/RootInlineBox.cpp        2015-07-15 16:02:39 UTC (rev 186840)
+++ branches/safari-600.8-branch/Source/WebCore/rendering/RootInlineBox.cpp        2015-07-15 16:04:12 UTC (rev 186841)
</span><span class="lines">@@ -790,13 +790,6 @@
</span><span class="cx">
</span><span class="cx"> void RootInlineBox::setLineBreakInfo(RenderObject* obj, unsigned breakPos, const BidiStatus& status)
</span><span class="cx"> {
</span><del>- // When setting lineBreakObj, the RenderObject must not be a RenderInline
- // with no line boxes, otherwise all sorts of invariants are broken later.
- // This has security implications because if the RenderObject does not
- // point to at least one line box, then that RenderInline can be deleted
- // later without resetting the lineBreakObj, leading to use-after-free.
- ASSERT_WITH_SECURITY_IMPLICATION(!obj || obj->isText() || !(obj->isRenderInline() && obj->isBox() && !toRenderBox(obj)->inlineBoxWrapper()));
-
</del><span class="cx"> m_lineBreakObj = obj;
</span><span class="cx"> m_lineBreakPos = breakPos;
</span><span class="cx"> m_lineBreakBidiStatusEor = status.eor;
</span></span></pre>
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