[Webkit-unassigned] [Bug 30978] New: [Qt] ASSERT failure while running DRT

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=30978

           Summary: [Qt] ASSERT failure while running DRT
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Keywords: Qt
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: yael.aharon at nokia.com


When running DRT in Debug mode, _many_ tests are crashing due to ASSERT failure
in JavaScriptCore. All the crashes I looked at, lead to the same callstack:

ASSERTION FAILED: !m_isCheckingForDefaultMarkViolation
(../../../JavaScriptCore/runtime/JSCell.h:318 void
JSC::MarkStack::append(JSC::JSCell*))
Segmentation fault
0: /home/yael/trunk4/WebKitBuild/Debug/bin/DumpRenderTree [0x805ba69]
1: /home/yael/trunk4/WebKitBuild/Debug/bin/DumpRenderTree [0x805be7c]
2: [0xb80e0400]
3:
/home/yael/trunk4/WebKitBuild/Debug/lib/libQtWebKit.so.4(_ZN3JSC9MarkStack6appendEPNS_6JSCellE+0x4c)
[0xb6835908]
4:
/home/yael/trunk4/WebKitBuild/Debug/lib/libQtWebKit.so.4(_ZN3JSC8Bindings10QtInstance13markAggregateERNS_9MarkStackE+0xc0)
[0xb70de9d2]
5:
/home/yael/trunk4/WebKitBuild/Debug/lib/libQtWebKit.so.4(_ZN3JSC8Bindings18QtRuntimeObjectImp12markChildrenERNS_9MarkStackE+0x4a)
[0xb70dffe2]
6:
/home/yael/trunk4/WebKitBuild/Debug/lib/libQtWebKit.so.4(_ZN3JSC9MarkStack12markChildrenEPNS_6JSCellE+0xed)
[0xb690be91]
7:
/home/yael/trunk4/WebKitBuild/Debug/lib/libQtWebKit.so.4(_ZN3JSC9MarkStack5drainEv+0x2bc)
[0xb690c1f8]
8:
/home/yael/trunk4/WebKitBuild/Debug/lib/libQtWebKit.so.4(_ZN3JSC4Heap18markConservativelyERNS_9MarkStackEPvS3_+0x215)
[0xb690c5bb]
9:
/home/yael/trunk4/WebKitBuild/Debug/lib/libQtWebKit.so.4(_ZN3JSC12RegisterFile11markGlobalsERNS_9MarkStackEPNS_4HeapE+0x3e)
[0xb68357d2]
10:
/home/yael/trunk4/WebKitBuild/Debug/lib/libQtWebKit.so.4(_ZN3JSC14JSGlobalObject12markChildrenERNS_9MarkStackE+0x21f)
[0xb6835e63]
...

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