Bug 83139

I'm bisecting manually which revision caused it. Here is the gdb backtrace in debug mode: Program received signal SIGSEGV, Segmentation fault. 0xf4cc415a in JSC::JSValue::asCell (this=0xf1158d70) at ../../../../Source/JavaScriptCore/runtime/JSValueInlineMethods.h:295 295 ASSERT(isCell()); (gdb) bt #0 0xf4cc415a in JSC::JSValue::asCell (this=0xf1158d70) at ../../../../Source/JavaScriptCore/runtime/JSValueInlineMethods.h:295 #1 0xf4f16b36 in JSC::WeakImplAccessor<JSC::Weak<JSC::Bindings::RuntimeObject>, JSC::Bindings::RuntimeObject>::get (this=0x80f73e8) at ../../../../Source/JavaScriptCore/heap/PassWeak.h:110 #2 0xf4f1661c in JSC::Bindings::Instance::createRuntimeObject (this=0x80f73c8, exec=0xecf7fcb4) at ../../../../Source/WebCore/bridge/jsc/BridgeJSC.cpp:93 #3 0xf4cc9c2e in QWebFrame::addToJavaScriptWindowObject (this=0x81029d0, name=..., object=0x811e8d8, ownership=QScriptEngine::QtOwnership) at ../../../Source/WebKit/qt/Api/qwebframe.cpp:697 #4 0xf4cc9a73 in QWebFrame::addToJavaScriptWindowObject (this=0x81029d0, name=..., object=0x811e8d8) at ../../../Source/WebKit/qt/Api/qwebframe.cpp:649 #5 0x0805e722 in WebCore::DumpRenderTree::initJSObjects (this=0xffffd1e4) at /home/oszi/WebKit/Tools/DumpRenderTree/qt/DumpRenderTreeQt.cpp:748 #6 0x0807039c in WebCore::DumpRenderTree::qt_static_metacall (_o=0xffffd1e4, _c=QMetaObject::InvokeMetaMethod, _id=2, _a=0xffffcdbc) at moc_DumpRenderTreeQt.cpp:81 #7 0xf1ad1af4 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/local/Trolltech/Qt-4.8.0/lib/libQtCore.so.4 #8 0xf4ccfc03 in QWebFrame::javaScriptWindowObjectCleared (this=0x81029d0) at ./moc_qwebframe.cpp:187 #9 0xf4cc8d7a in QWebFramePrivate::didClearWindowObject (this=0x80fc900) at ../../../Source/WebKit/qt/Api/qwebframe.cpp:490 #10 0xf4d2de1c in WebCore::FrameLoaderClientQt::dispatchDidClearWindowObjectInWorld (this=0x81038c0, world=0x8108a88) at ../../../Source/WebKit/qt/WebCoreSupport/FrameLoaderClientQt.cpp:766 #11 0xf555fe07 in WebCore::FrameLoader::dispatchDidClearWindowObjectInWorld (this=0x8104754, world=0x8108a88) at ../../../../Source/WebCore/loader/FrameLoader.cpp:3145 #12 0xf4ecede2 in WebCore::ScriptController::initScript (this=0x8104a78, world=0x8108a88) at ../../../../Source/WebCore/bindings/js/ScriptController.cpp:223 #13 0xf4cc5855 in WebCore::ScriptController::windowShell (this=0x8104a78, world=0x8108a88) at ../../../Source/WebCore/bindings/js/ScriptController.h:75 #14 0xf4e6c3ba in WebCore::toJSDOMWindow (frame=0x81046e0, world=0x8108a88) at ../../../../Source/WebCore/bindings/js/JSDOMWindowBase.cpp:231 #15 0xf4d2179f in DumpRenderTreeSupportQt::resetInternalsObject (frame=0x81029d0) at ../../../Source/WebKit/qt/WebCoreSupport/DumpRenderTreeSupportQt.cpp:1186 #16 0x0805b13a in WebCore::WebPage::resetSettings (this=0xef501148) at /home/oszi/WebKit/Tools/DumpRenderTree/qt/DumpRenderTreeQt.cpp:209 #17 0x0805cdb2 in WebCore::DumpRenderTree::resetToConsistentStateBeforeTesting (this=0xffffd1e4, url=...) at /home/oszi/WebKit/Tools/DumpRenderTree/qt/DumpRenderTreeQt.cpp:533 #18 0x0805d425 in WebCore::DumpRenderTree::open (this=0xffffd1e4, url=...) at /home/oszi/WebKit/Tools/DumpRenderTree/qt/DumpRenderTreeQt.cpp:596 #19 0x0805e4d0 in WebCore::DumpRenderTree::processLine (this=0xffffd1e4, input=...) at /home/oszi/WebKit/Tools/DumpRenderTree/qt/DumpRenderTreeQt.cpp:726 #20 0x0805de56 in WebCore::DumpRenderTree::processArgsLine (this=0xffffd1e4, args=...) at /home/oszi/WebKit/Tools/DumpRenderTree/qt/DumpRenderTreeQt.cpp:676 #21 0x08070048 in main (argc=2, argv=0xffffd384) at /home/oszi/WebKit/Tools/DumpRenderTree/qt/main.cpp:252