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<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/176301">176301</a></dd>
<dt>Author</dt> <dd>cdumez@apple.com</dd>
<dt>Date</dt> <dd>2014-11-18 18:05:34 -0800 (Tue, 18 Nov 2014)</dd>
</dl>
<h3>Log Message</h3>
<pre>Crash when setting 'z-index' / 'flex-shrink' CSS properties to a calculated value
https://bugs.webkit.org/show_bug.cgi?id=138783
Reviewed by Andreas Kling.
Source/WebCore:
Update operators converting CSSPrimitiveValue to integer / floating
point types to properly handle calculated values (e.g. 'calc(2 * 3)').
Previously, this was not working in release builds and we would hit an
ASSERT_NOT_REACHED() in debug builds.
Tests: fast/css/flex-shrink-calculated-value.html
fast/css/z-index-calculated-value.html
* css/CSSPrimitiveValueMappings.h:
(WebCore::CSSPrimitiveValue::operator unsigned short):
(WebCore::CSSPrimitiveValue::operator int):
(WebCore::CSSPrimitiveValue::operator unsigned):
(WebCore::CSSPrimitiveValue::operator float):
LayoutTests:
Add layout tests to check that settings 'z-index' / 'flex-shrink' CSS
properties to a calculated value does not crash and behaves as
expected.
* fast/css/flex-shrink-calculated-value-expected.txt: Added.
* fast/css/flex-shrink-calculated-value.html: Added.
* fast/css/z-index-calculated-value-expected.txt: Added.
* fast/css/z-index-calculated-value.html: Added.</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkLayoutTestsChangeLog">trunk/LayoutTests/ChangeLog</a></li>
<li><a href="#trunkSourceWebCoreChangeLog">trunk/Source/WebCore/ChangeLog</a></li>
<li><a href="#trunkSourceWebCorecssCSSPrimitiveValueMappingsh">trunk/Source/WebCore/css/CSSPrimitiveValueMappings.h</a></li>
</ul>
<h3>Added Paths</h3>
<ul>
<li><a href="#trunkLayoutTestsfastcssflexshrinkcalculatedvalueexpectedtxt">trunk/LayoutTests/fast/css/flex-shrink-calculated-value-expected.txt</a></li>
<li><a href="#trunkLayoutTestsfastcssflexshrinkcalculatedvaluehtml">trunk/LayoutTests/fast/css/flex-shrink-calculated-value.html</a></li>
<li><a href="#trunkLayoutTestsfastcsszindexcalculatedvalueexpectedtxt">trunk/LayoutTests/fast/css/z-index-calculated-value-expected.txt</a></li>
<li><a href="#trunkLayoutTestsfastcsszindexcalculatedvaluehtml">trunk/LayoutTests/fast/css/z-index-calculated-value.html</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkLayoutTestsChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/LayoutTests/ChangeLog (176300 => 176301)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/ChangeLog        2014-11-19 01:57:38 UTC (rev 176300)
+++ trunk/LayoutTests/ChangeLog        2014-11-19 02:05:34 UTC (rev 176301)
</span><span class="lines">@@ -1,3 +1,19 @@
</span><ins>+2014-11-18 Chris Dumez <cdumez@apple.com>
+
+ Crash when setting 'z-index' / 'flex-shrink' CSS properties to a calculated value
+ https://bugs.webkit.org/show_bug.cgi?id=138783
+
+ Reviewed by Andreas Kling.
+
+ Add layout tests to check that settings 'z-index' / 'flex-shrink' CSS
+ properties to a calculated value does not crash and behaves as
+ expected.
+
+ * fast/css/flex-shrink-calculated-value-expected.txt: Added.
+ * fast/css/flex-shrink-calculated-value.html: Added.
+ * fast/css/z-index-calculated-value-expected.txt: Added.
+ * fast/css/z-index-calculated-value.html: Added.
+
</ins><span class="cx"> 2014-11-18 Commit Queue <commit-queue@webkit.org>
</span><span class="cx">
</span><span class="cx"> Unreviewed, rolling out r176263 and r176273.
</span></span></pre></div>
<a id="trunkLayoutTestsfastcssflexshrinkcalculatedvalueexpectedtxt"></a>
<div class="addfile"><h4>Added: trunk/LayoutTests/fast/css/flex-shrink-calculated-value-expected.txt (0 => 176301)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/fast/css/flex-shrink-calculated-value-expected.txt         (rev 0)
+++ trunk/LayoutTests/fast/css/flex-shrink-calculated-value-expected.txt        2014-11-19 02:05:34 UTC (rev 176301)
</span><span class="lines">@@ -0,0 +1,13 @@
</span><ins>+Tests assigning a calculated value to flex-shrink CSS property.
+
+On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
+
+
+PASS testDiv.style['flex-shrink'] is ""
+testDiv.style['flex-shrink'] = 'calc(2 * 3)'
+PASS testDiv.style['flex-shrink'] is "calc(6)"
+PASS window.getComputedStyle(testDiv).getPropertyValue('flex-shrink') is "6"
+PASS successfullyParsed is true
+
+TEST COMPLETE
+
</ins></span></pre></div>
<a id="trunkLayoutTestsfastcssflexshrinkcalculatedvaluehtml"></a>
<div class="addfile"><h4>Added: trunk/LayoutTests/fast/css/flex-shrink-calculated-value.html (0 => 176301)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/fast/css/flex-shrink-calculated-value.html         (rev 0)
+++ trunk/LayoutTests/fast/css/flex-shrink-calculated-value.html        2014-11-19 02:05:34 UTC (rev 176301)
</span><span class="lines">@@ -0,0 +1,17 @@
</span><ins>+<!DOCTYPE html>
+<body>
+<script src="../../resources/js-test-pre.js"></script>
+<div id="testDiv" style="position: absolute;"></div>
+<script>
+description("Tests assigning a calculated value to flex-shrink CSS property.");
+
+var testDiv = document.getElementById("testDiv");
+
+shouldBeEmptyString("testDiv.style['flex-shrink']");
+evalAndLog("testDiv.style['flex-shrink'] = 'calc(2 * 3)'");
+shouldBeEqualToString("testDiv.style['flex-shrink']", "calc(6)");
+shouldBeEqualToString("window.getComputedStyle(testDiv).getPropertyValue('flex-shrink')", "6");
+
+</script>
+<script src="../../resources/js-test-post.js"></script>
+</body>
</ins></span></pre></div>
<a id="trunkLayoutTestsfastcsszindexcalculatedvalueexpectedtxt"></a>
<div class="addfile"><h4>Added: trunk/LayoutTests/fast/css/z-index-calculated-value-expected.txt (0 => 176301)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/fast/css/z-index-calculated-value-expected.txt         (rev 0)
+++ trunk/LayoutTests/fast/css/z-index-calculated-value-expected.txt        2014-11-19 02:05:34 UTC (rev 176301)
</span><span class="lines">@@ -0,0 +1,13 @@
</span><ins>+Tests assigning a calculated value to z-index CSS property.
+
+On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
+
+
+PASS testDiv.style['z-index'] is ""
+testDiv.style['z-index'] = 'calc(-2 * 3)'
+PASS testDiv.style['z-index'] is "calc(-6)"
+PASS window.getComputedStyle(testDiv).getPropertyValue('z-index') is "-6"
+PASS successfullyParsed is true
+
+TEST COMPLETE
+
</ins></span></pre></div>
<a id="trunkLayoutTestsfastcsszindexcalculatedvaluehtml"></a>
<div class="addfile"><h4>Added: trunk/LayoutTests/fast/css/z-index-calculated-value.html (0 => 176301)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/fast/css/z-index-calculated-value.html         (rev 0)
+++ trunk/LayoutTests/fast/css/z-index-calculated-value.html        2014-11-19 02:05:34 UTC (rev 176301)
</span><span class="lines">@@ -0,0 +1,17 @@
</span><ins>+<!DOCTYPE html>
+<body>
+<script src="../../resources/js-test-pre.js"></script>
+<div id="testDiv" style="position: absolute;"></div>
+<script>
+description("Tests assigning a calculated value to z-index CSS property.");
+
+var testDiv = document.getElementById("testDiv");
+
+shouldBeEmptyString("testDiv.style['z-index']");
+evalAndLog("testDiv.style['z-index'] = 'calc(-2 * 3)'");
+shouldBeEqualToString("testDiv.style['z-index']", "calc(-6)");
+shouldBeEqualToString("window.getComputedStyle(testDiv).getPropertyValue('z-index')", "-6");
+
+</script>
+<script src="../../resources/js-test-post.js"></script>
+</body>
</ins></span></pre></div>
<a id="trunkSourceWebCoreChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/ChangeLog (176300 => 176301)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/ChangeLog        2014-11-19 01:57:38 UTC (rev 176300)
+++ trunk/Source/WebCore/ChangeLog        2014-11-19 02:05:34 UTC (rev 176301)
</span><span class="lines">@@ -1,3 +1,24 @@
</span><ins>+2014-11-18 Chris Dumez <cdumez@apple.com>
+
+ Crash when setting 'z-index' / 'flex-shrink' CSS properties to a calculated value
+ https://bugs.webkit.org/show_bug.cgi?id=138783
+
+ Reviewed by Andreas Kling.
+
+ Update operators converting CSSPrimitiveValue to integer / floating
+ point types to properly handle calculated values (e.g. 'calc(2 * 3)').
+ Previously, this was not working in release builds and we would hit an
+ ASSERT_NOT_REACHED() in debug builds.
+
+ Tests: fast/css/flex-shrink-calculated-value.html
+ fast/css/z-index-calculated-value.html
+
+ * css/CSSPrimitiveValueMappings.h:
+ (WebCore::CSSPrimitiveValue::operator unsigned short):
+ (WebCore::CSSPrimitiveValue::operator int):
+ (WebCore::CSSPrimitiveValue::operator unsigned):
+ (WebCore::CSSPrimitiveValue::operator float):
+
</ins><span class="cx"> 2014-11-18 Commit Queue <commit-queue@webkit.org>
</span><span class="cx">
</span><span class="cx"> Unreviewed, rolling out r176263 and r176273.
</span></span></pre></div>
<a id="trunkSourceWebCorecssCSSPrimitiveValueMappingsh"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/css/CSSPrimitiveValueMappings.h (176300 => 176301)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/css/CSSPrimitiveValueMappings.h        2014-11-19 01:57:38 UTC (rev 176300)
+++ trunk/Source/WebCore/css/CSSPrimitiveValueMappings.h        2014-11-19 02:05:34 UTC (rev 176301)
</span><span class="lines">@@ -82,8 +82,8 @@
</span><span class="cx">
</span><span class="cx"> template<> inline CSSPrimitiveValue::operator unsigned short() const
</span><span class="cx"> {
</span><del>- if (m_primitiveUnitType == CSS_NUMBER)
- return clampTo<unsigned short>(m_value.num);
</del><ins>+ if (primitiveType() == CSS_NUMBER)
+ return getValue<unsigned short>();
</ins><span class="cx">
</span><span class="cx"> ASSERT_NOT_REACHED();
</span><span class="cx"> return 0;
</span><span class="lines">@@ -91,8 +91,8 @@
</span><span class="cx">
</span><span class="cx"> template<> inline CSSPrimitiveValue::operator int() const
</span><span class="cx"> {
</span><del>- if (m_primitiveUnitType == CSS_NUMBER)
- return clampTo<int>(m_value.num);
</del><ins>+ if (primitiveType() == CSS_NUMBER)
+ return getValue<int>();
</ins><span class="cx">
</span><span class="cx"> ASSERT_NOT_REACHED();
</span><span class="cx"> return 0;
</span><span class="lines">@@ -100,8 +100,8 @@
</span><span class="cx">
</span><span class="cx"> template<> inline CSSPrimitiveValue::operator unsigned() const
</span><span class="cx"> {
</span><del>- if (m_primitiveUnitType == CSS_NUMBER)
- return clampTo<unsigned>(m_value.num);
</del><ins>+ if (primitiveType() == CSS_NUMBER)
+ return getValue<unsigned>();
</ins><span class="cx">
</span><span class="cx"> ASSERT_NOT_REACHED();
</span><span class="cx"> return 0;
</span><span class="lines">@@ -117,8 +117,8 @@
</span><span class="cx">
</span><span class="cx"> template<> inline CSSPrimitiveValue::operator float() const
</span><span class="cx"> {
</span><del>- if (m_primitiveUnitType == CSS_NUMBER)
- return clampTo<float>(m_value.num);
</del><ins>+ if (primitiveType() == CSS_NUMBER)
+ return getValue<float>();
</ins><span class="cx">
</span><span class="cx"> ASSERT_NOT_REACHED();
</span><span class="cx"> return 0.0f;
</span></span></pre>
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