Title: [117282] releases/WebKitGTK/webkit-1.8
Revision
117282
Author
[email protected]
Date
2012-05-16 06:57:05 -0700 (Wed, 16 May 2012)

Log Message

Merge 113597 - Crash due to floats not cleared before starting SVG <text> layout.
https://bugs.webkit.org/show_bug.cgi?id=83021

Reviewed by Dirk Schulze.

.:

* ManualTests/svg-text-float-not-removed-crash.html: Added.

Source/WebCore:

Manual Test - ManualTests/svg-text-float-not-removed-crash.html.
Can't reproduce the failure in DRT.

forceLayoutInlineChildren is used in SVG <text> layout and overrides
RenderBlock::layoutBlock. However, it missed the 'clearFloats' step,
which will cause a crash when trying to access removed renderers.

* rendering/RenderBlock.h:
(WebCore::RenderBlock::forceLayoutInlineChildren):

Modified Paths

Added Paths

Diff

Modified: releases/WebKitGTK/webkit-1.8/ChangeLog (117281 => 117282)


--- releases/WebKitGTK/webkit-1.8/ChangeLog	2012-05-16 13:56:48 UTC (rev 117281)
+++ releases/WebKitGTK/webkit-1.8/ChangeLog	2012-05-16 13:57:05 UTC (rev 117282)
@@ -1,3 +1,12 @@
+2012-04-09  Abhishek Arya  <[email protected]>
+
+        Crash due to floats not cleared before starting SVG <text> layout.
+        https://bugs.webkit.org/show_bug.cgi?id=83021
+
+        Reviewed by Dirk Schulze.
+
+        * ManualTests/svg-text-float-not-removed-crash.html: Added.
+
 2012-04-16  Gustavo Noronha Silva  <[email protected]>
 
         [GTK] Bump dependency on GTK+ 3.x to match reality

Added: releases/WebKitGTK/webkit-1.8/ManualTests/svg-text-float-not-removed-crash.html (0 => 117282)


--- releases/WebKitGTK/webkit-1.8/ManualTests/svg-text-float-not-removed-crash.html	                        (rev 0)
+++ releases/WebKitGTK/webkit-1.8/ManualTests/svg-text-float-not-removed-crash.html	2012-05-16 13:57:05 UTC (rev 117282)
@@ -0,0 +1,34 @@
+<!DOCTYPE html>
+<html>
+<script>
+setInterval(function(){
+    var elements = document.getElementsByTagName("*");
+    var didRemoveElement = false;
+    for (var i = 0; i < elements.length; i++) {
+        var element = elements.item(i);
+        if (!element.firstElementChild && element != document.documentElement) {
+            didRemoveElement = true;
+            try { 
+                element.parentNode.removeChild(element)
+            } catch(e) { }
+        }
+    }
+
+    if (!didRemoveElement)
+        document.documentElement.innerHTML = "PASS. WebKit didn't crash.";
+}, 100);
+</script>
+<style>
+#test1:after {
+    float: left; 
+    content: 'A';
+}
+</style>
+<svg>
+<text>
+<a id="test1">
+A
+</a>
+</text>
+</svg>
+</html>
Property changes on: releases/WebKitGTK/webkit-1.8/ManualTests/svg-text-float-not-removed-crash.html
___________________________________________________________________

Added: svn:executable

Modified: releases/WebKitGTK/webkit-1.8/Source/WebCore/ChangeLog (117281 => 117282)


--- releases/WebKitGTK/webkit-1.8/Source/WebCore/ChangeLog	2012-05-16 13:56:48 UTC (rev 117281)
+++ releases/WebKitGTK/webkit-1.8/Source/WebCore/ChangeLog	2012-05-16 13:57:05 UTC (rev 117282)
@@ -1,3 +1,20 @@
+2012-04-09  Abhishek Arya  <[email protected]>
+
+        Crash due to floats not cleared before starting SVG <text> layout.
+        https://bugs.webkit.org/show_bug.cgi?id=83021
+
+        Reviewed by Dirk Schulze.
+
+        Manual Test - ManualTests/svg-text-float-not-removed-crash.html.
+        Can't reproduce the failure in DRT.
+
+        forceLayoutInlineChildren is used in SVG <text> layout and overrides
+        RenderBlock::layoutBlock. However, it missed the 'clearFloats' step,
+        which will cause a crash when trying to access removed renderers.
+
+        * rendering/RenderBlock.h:
+        (WebCore::RenderBlock::forceLayoutInlineChildren):
+
 2012-04-02  Abhishek Arya  <[email protected]>
 
         <select> shouldn't intrude as a run-in.

Modified: releases/WebKitGTK/webkit-1.8/Source/WebCore/rendering/RenderBlock.h (117281 => 117282)


--- releases/WebKitGTK/webkit-1.8/Source/WebCore/rendering/RenderBlock.h	2012-05-16 13:56:48 UTC (rev 117281)
+++ releases/WebKitGTK/webkit-1.8/Source/WebCore/rendering/RenderBlock.h	2012-05-16 13:57:05 UTC (rev 117282)
@@ -455,6 +455,7 @@
     {
         LayoutUnit repaintLogicalTop = 0;
         LayoutUnit repaintLogicalBottom = 0;
+        clearFloats(NormalLayoutPass);
         layoutInlineChildren(true, repaintLogicalTop, repaintLogicalBottom);
     }
 #endif
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