tst_QWidget crashes on Mac OS X

Process: tst_qwidget [10558]
Path: /Users/USER/*/tst_qwidget.app/Contents/MacOS/tst_qwidget
Identifier: com.yourcompany.tst_qwidget
Version: ??? (???)
Code Type: X86-64 (Native)
Parent Process: gnumake [10557]

Date/Time: 2012-01-18 08:07:23.694 +0100
OS Version: Mac OS X 10.7.2 (11C74)
Report Version: 9

Interval Since Last Report: 61157 sec
Crashes Since Last Report: 1
Per-App Interval Since Last Report: 260 sec
Per-App Crashes Since Last Report: 1
Anonymous UUID: 6F236BD9-DA13-4641-8C76-B6917DA904AE

Crashed Thread: 0 Dispatch queue: com.apple.main-thread

Exception Type: EXC_BAD_ACCESS (SIGABRT)
Exception Codes: 0x000000000000000d, 0x0000000000000000

VM Regions Near 0:
-->
__TEXT 0000000100000000-00000001000c1000 [ 772K] r-x/rwx SM=COW /Users/USER/*/tst_qwidget.app/Contents/MacOS/tst_qwidget

Application Specific Information:
objc[10558]: garbage collection is OFF
abort() called

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 libsystem_kernel.dylib 0x00007fff90fb2ce2 __pthread_kill + 10
1 libsystem_c.dylib 0x00007fff8d48f7d2 pthread_kill + 95
2 libsystem_c.dylib 0x00007fff8d480a7a abort + 143
3 QtCore 0x0000000100e10ca0 qt_message_output(QtMsgType, char const*) + 128
4 QtCore 0x0000000100e10f44 ZL10qt_message9QtMsgTypePKcP13_va_list_tag + 404
5 QtCore 0x0000000100e10801 qFatal(char const*, ...) + 145
6 libsystem_c.dylib 0x00007fff8d4e1cfa _sigtramp + 26
7 QtCore 0x0000000100e6573a QtSharedPointer::ExternalRefCountData::getAndRef(QObject const*) + 42
8 QtGui 0x0000000100945552 QWindowSystemInterface::handleMouseEvent(QWindow*, unsigned long, QPointF const&, QPointF const&, QFlags<Qt::MouseButton>, QFlags<Qt::KeyboardModifier>) + 82
9 libqcocoa.dylib 0x0000000101593b97 -[QNSView handleMouseEvent:] + 631
10 com.apple.AppKit 0x00007fff92aa6544 -[NSWindow sendEvent:] + 7430
11 com.apple.AppKit 0x00007fff92a3e3a5 -[NSApplication sendEvent:] + 4847
12 libqcocoa.dylib 0x0000000101596330 QCocoaEventDispatcher::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) + 1344
13 QtCore 0x0000000100f3df71 QCoreApplication::processEvents(QFlags<QEventLoop::ProcessEventsFlag>, int) + 145
14 com.yourcompany.tst_qwidget 0x00000001000082c8 _ZN5QTestL5qWaitEi + 136 (qtestsystem.h:71)
15 com.yourcompany.tst_qwidget 0x00000001000724ee tst_QWidget::taskQTBUG_4055_sendSyntheticEnterLeave() + 158 (tst_qwidget.cpp:8636)
16 com.yourcompany.tst_qwidget 0x000000010007943a tst_QWidget::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) + 1834 (tst_qwidget.moc:385)
17 QtCore 0x0000000100f4520f QMetaMethod::invoke(QObject*, Qt::ConnectionType, QGenericReturnArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument) const + 1247
18 QtCore 0x0000000100f44cc8 QMetaObject::invokeMethod(QObject*, char const*, Qt::ConnectionType, QGenericReturnArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument) + 1656
19 QtTest 0x00000001012208c1 ZN5QTestL17qInvokeTestMethodEPKcS1 + 1505
20 QtTest 0x000000010121dc4a QTest::qExec(QObject*, int, char**) + 1290
21 com.yourcompany.tst_qwidget 0x0000000100078c85 main + 101 (tst_qwidget.cpp:9315)
22 com.yourcompany.tst_qwidget 0x0000000100005894 start + 52

Thread 1:: Dispatch queue: com.apple.libdispatch-manager
0 libsystem_kernel.dylib 0x00007fff90fb37e6 kevent + 10
1 libdispatch.dylib 0x00007fff8903a5be _dispatch_mgr_invoke + 923
2 libdispatch.dylib 0x00007fff8903914e _dispatch_mgr_thread + 54

Thread 2:
0 libsystem_kernel.dylib 0x00007fff90fb3192 __workq_kernreturn + 10
1 libsystem_c.dylib 0x00007fff8d48f594 _pthread_wqthread + 758
2 libsystem_c.dylib 0x00007fff8d490b85 start_wqthread + 13

Thread 0 crashed with X86 Thread State (64-bit):
rax: 0x0000000000000000 rbx: 0x0000000000000006 rcx: 0x00007fff5fbfdc88 rdx: 0x0000000000000000
rdi: 0x0000000000000803 rsi: 0x0000000000000006 rbp: 0x00007fff5fbfdcb0 rsp: 0x00007fff5fbfdc88
r8: 0x00007fff78deefb8 r9: 0x0000000102c0b600 r10: 0x00007fff90fb2d0a r11: 0xffffff80002d8220
r12: 0x0000000000000000 r13: 0x0000000000000003 r14: 0x00007fff78df1960 r15: 0x0000000101232231
rip: 0x00007fff90fb2ce2 rfl: 0x0000000000000246 cr2: 0x00000001c87ff000
Logical CPU: 0