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<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/190962">190962</a></dd>
<dt>Author</dt> <dd>carlosgc@webkit.org</dd>
<dt>Date</dt> <dd>2015-10-13 03:56:30 -0700 (Tue, 13 Oct 2015)</dd>
</dl>
<h3>Log Message</h3>
<pre>Merge <a href="http://trac.webkit.org/projects/webkit/changeset/190597">r190597</a> - CSSGradientValue should check whether gradientLength is zero or not.
https://bugs.webkit.org/show_bug.cgi?id=149373
<rdar://problem/22771418>
Patch by Jiewen Tan <jiewen_tan@apple.com> on 2015-10-05
Reviewed by Darin Adler.
Source/WebCore:
This is a merge of Blink <a href="http://trac.webkit.org/projects/webkit/changeset/158220">r158220</a>,
https://chromiumcodereview.appspot.com/24350008
Test: fast/gradients/css3-repeating-radial-gradients-crash.html
* css/CSSGradientValue.cpp:
(WebCore::CSSGradientValue::addStops):
Check whether gradientLength > 0 before using it as denominator.
LayoutTests:
* fast/gradients/css3-repeating-radial-gradients-crash-expected.txt: Added.
* fast/gradients/css3-repeating-radial-gradients-crash.html: Added.</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#releasesWebKitGTKwebkit210LayoutTestsChangeLog">releases/WebKitGTK/webkit-2.10/LayoutTests/ChangeLog</a></li>
<li><a href="#releasesWebKitGTKwebkit210SourceWebCoreChangeLog">releases/WebKitGTK/webkit-2.10/Source/WebCore/ChangeLog</a></li>
<li><a href="#releasesWebKitGTKwebkit210SourceWebCorecssCSSGradientValuecpp">releases/WebKitGTK/webkit-2.10/Source/WebCore/css/CSSGradientValue.cpp</a></li>
</ul>
<h3>Added Paths</h3>
<ul>
<li><a href="#releasesWebKitGTKwebkit210LayoutTestsfastgradientscss3repeatingradialgradientscrashexpectedtxt">releases/WebKitGTK/webkit-2.10/LayoutTests/fast/gradients/css3-repeating-radial-gradients-crash-expected.txt</a></li>
<li><a href="#releasesWebKitGTKwebkit210LayoutTestsfastgradientscss3repeatingradialgradientscrashhtml">releases/WebKitGTK/webkit-2.10/LayoutTests/fast/gradients/css3-repeating-radial-gradients-crash.html</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="releasesWebKitGTKwebkit210LayoutTestsChangeLog"></a>
<div class="modfile"><h4>Modified: releases/WebKitGTK/webkit-2.10/LayoutTests/ChangeLog (190961 => 190962)</h4>
<pre class="diff"><span>
<span class="info">--- releases/WebKitGTK/webkit-2.10/LayoutTests/ChangeLog 2015-10-13 10:55:28 UTC (rev 190961)
+++ releases/WebKitGTK/webkit-2.10/LayoutTests/ChangeLog 2015-10-13 10:56:30 UTC (rev 190962)
</span><span class="lines">@@ -1,3 +1,14 @@
</span><ins>+2015-10-05 Jiewen Tan <jiewen_tan@apple.com>
+
+ CSSGradientValue should check whether gradientLength is zero or not.
+ https://bugs.webkit.org/show_bug.cgi?id=149373
+ <rdar://problem/22771418>
+
+ Reviewed by Darin Adler.
+
+ * fast/gradients/css3-repeating-radial-gradients-crash-expected.txt: Added.
+ * fast/gradients/css3-repeating-radial-gradients-crash.html: Added.
+
</ins><span class="cx"> 2015-10-05 Dean Jackson <dino@apple.com>
</span><span class="cx">
</span><span class="cx"> Reference cycles during SVG dependency invalidation
</span></span></pre></div>
<a id="releasesWebKitGTKwebkit210LayoutTestsfastgradientscss3repeatingradialgradientscrashexpectedtxt"></a>
<div class="addfile"><h4>Added: releases/WebKitGTK/webkit-2.10/LayoutTests/fast/gradients/css3-repeating-radial-gradients-crash-expected.txt (0 => 190962)</h4>
<pre class="diff"><span>
<span class="info">--- releases/WebKitGTK/webkit-2.10/LayoutTests/fast/gradients/css3-repeating-radial-gradients-crash-expected.txt (rev 0)
+++ releases/WebKitGTK/webkit-2.10/LayoutTests/fast/gradients/css3-repeating-radial-gradients-crash-expected.txt 2015-10-13 10:56:30 UTC (rev 190962)
</span><span class="lines">@@ -0,0 +1 @@
</span><ins>+If this test passes, no crash occurs.
</ins></span></pre></div>
<a id="releasesWebKitGTKwebkit210LayoutTestsfastgradientscss3repeatingradialgradientscrashhtml"></a>
<div class="addfile"><h4>Added: releases/WebKitGTK/webkit-2.10/LayoutTests/fast/gradients/css3-repeating-radial-gradients-crash.html (0 => 190962)</h4>
<pre class="diff"><span>
<span class="info">--- releases/WebKitGTK/webkit-2.10/LayoutTests/fast/gradients/css3-repeating-radial-gradients-crash.html (rev 0)
+++ releases/WebKitGTK/webkit-2.10/LayoutTests/fast/gradients/css3-repeating-radial-gradients-crash.html 2015-10-13 10:56:30 UTC (rev 190962)
</span><span class="lines">@@ -0,0 +1,10 @@
</span><ins>+<!doctype html>
+<html>
+<script>
+ if (window.testRunner)
+ testRunner.dumpAsText();
+</script>
+<body style="background-image: repeating-radial-gradient(closest-side circle at 0% 0%, #fff, #000);">
+If this test passes, no crash occurs.
+</body>
+</html>
</ins></span></pre></div>
<a id="releasesWebKitGTKwebkit210SourceWebCoreChangeLog"></a>
<div class="modfile"><h4>Modified: releases/WebKitGTK/webkit-2.10/Source/WebCore/ChangeLog (190961 => 190962)</h4>
<pre class="diff"><span>
<span class="info">--- releases/WebKitGTK/webkit-2.10/Source/WebCore/ChangeLog 2015-10-13 10:55:28 UTC (rev 190961)
+++ releases/WebKitGTK/webkit-2.10/Source/WebCore/ChangeLog 2015-10-13 10:56:30 UTC (rev 190962)
</span><span class="lines">@@ -1,3 +1,20 @@
</span><ins>+2015-10-05 Jiewen Tan <jiewen_tan@apple.com>
+
+ CSSGradientValue should check whether gradientLength is zero or not.
+ https://bugs.webkit.org/show_bug.cgi?id=149373
+ <rdar://problem/22771418>
+
+ Reviewed by Darin Adler.
+
+ This is a merge of Blink r158220,
+ https://chromiumcodereview.appspot.com/24350008
+
+ Test: fast/gradients/css3-repeating-radial-gradients-crash.html
+
+ * css/CSSGradientValue.cpp:
+ (WebCore::CSSGradientValue::addStops):
+ Check whether gradientLength > 0 before using it as denominator.
+
</ins><span class="cx"> 2015-10-05 Dean Jackson <dino@apple.com>
</span><span class="cx">
</span><span class="cx"> Reference cycles during SVG dependency invalidation
</span></span></pre></div>
<a id="releasesWebKitGTKwebkit210SourceWebCorecssCSSGradientValuecpp"></a>
<div class="modfile"><h4>Modified: releases/WebKitGTK/webkit-2.10/Source/WebCore/css/CSSGradientValue.cpp (190961 => 190962)</h4>
<pre class="diff"><span>
<span class="info">--- releases/WebKitGTK/webkit-2.10/Source/WebCore/css/CSSGradientValue.cpp 2015-10-13 10:55:28 UTC (rev 190961)
+++ releases/WebKitGTK/webkit-2.10/Source/WebCore/css/CSSGradientValue.cpp 2015-10-13 10:56:30 UTC (rev 190962)
</span><span class="lines">@@ -375,7 +375,7 @@
</span><span class="cx"> }
</span><span class="cx">
</span><span class="cx"> if (maxLengthForRepeat > gradientLength)
</span><del>- maxExtent = maxLengthForRepeat / gradientLength;
</del><ins>+ maxExtent = gradientLength > 0 ? maxLengthForRepeat / gradientLength : 0;
</ins><span class="cx"> }
</span><span class="cx">
</span><span class="cx"> size_t originalNumStops = numStops;
</span></span></pre>
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