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diff -up webkitgtk-2.20.3/Source/WebCore/accessibility/AccessibilityObject.cpp.atk_crash webkitgtk-2.20.3/Source/WebCore/accessibility/AccessibilityObject.cpp
--- webkitgtk-2.20.3/Source/WebCore/accessibility/AccessibilityObject.cpp.atk_crash 2018-04-09 14:00:57.000000000 +0200
+++ webkitgtk-2.20.3/Source/WebCore/accessibility/AccessibilityObject.cpp 2018-07-24 13:40:41.183634369 +0200
@@ -67,6 +67,7 @@
#include "RenderView.h"
#include "RenderWidget.h"
#include "RenderedPosition.h"
+#include "ScriptDisallowedScope.h"
#include "Settings.h"
#include "TextCheckerClient.h"
#include "TextCheckingHelper.h"
@@ -1771,7 +1772,11 @@ void AccessibilityObject::updateBackingS
// Updating the layout may delete this object.
RefPtr<AccessibilityObject> protectedThis(this);
if (auto* document = this->document()) {
- if (!document->view()->layoutContext().isInRenderTreeLayout() && !document->inRenderTreeUpdate() && !document->inStyleRecalc())
+ if (!document->view()->layoutContext().isInRenderTreeLayout()
+ && !document->inRenderTreeUpdate()
+ && !document->inStyleRecalc()
+ && ScriptDisallowedScope::InMainThread::isScriptAllowed())
+
document->updateLayoutIgnorePendingStylesheets();
}
updateChildrenIfNecessary();