crash when editing QML file

When editing a qml file (trying to add a 'target' property at the front of a NumberAnimation, text when it crashed looked like NumberAnimation

) Qt creator crashed.

(gdb) bt
#0 erase (this=0xdf6840, fileName=<value optimized out>)
at /home/aalpert/build/qt/qt-qml/include/QtCore/../../../../../depot/qt/qt-qml/src/corelib/tools/qhash.h:834
#1 remove (this=0xdf6840, fileName=<value optimized out>)
at /home/aalpert/build/qt/qt-qml/include/QtCore/../../../../../depot/qt/qt-qml/src/corelib/tools/qhash.h:1013
#2 QmlJS::Snapshot::remove (this=0xdf6840, fileName=<value optimized out>)
at /home/aalpert/depot/creator/mainline/src/libs/qmljs/qmljsdocument.cpp:272
#3 0x00007fffe1ae5900 in QmlJS::Snapshot::insert (this=0xdf6840, document=...)
at /home/aalpert/depot/creator/mainline/src/libs/qmljs/qmljsdocument.cpp:257
#4 0x00007fffe1d81acf in QmlJSEditor::Internal::ModelManager::onDocumentUpdated (this=
0xdf6820, doc=...)
at /home/aalpert/depot/creator/mainline/src/plugins/qmljseditor/qmljsmodelmanager.cpp:187
#5 0x00007fffe1d8a367 in QmlJSEditor::Internal::ModelManager::qt_metacall (this=0xdf6820, _c=
InvokeMetaMethod, _id=2, _a=0x7fffc8028750)
at .moc/debug-shared/moc_qmljsmodelmanager.cpp:83
#6 0x00007ffff6279953 in QMetaObject::metacall (object=0xdf6820, cl=InvokeMetaMethod, idx=9,
argv=0x7fffc8028750)
at /home/aalpert/depot/qt/qt-qml/src/corelib/kernel/qmetaobject.cpp:237
#7 0x00007ffff6289440 in QMetaCallEvent::placeMetaCall (this=0x7fffc80af690, object=0xdf6820)
at /home/aalpert/depot/qt/qt-qml/src/corelib/kernel/qobject.cpp:534
#8 0x00007ffff628a72d in QObject::event (this=0xdf6820, e=0x7fffc80af690)
at /home/aalpert/depot/qt/qt-qml/src/corelib/kernel/qobject.cpp:1211
#9 0x00007ffff6bd265a in QApplicationPrivate::notify_helper (this=0x6130b0, receiver=
0xdf6820, e=0x7fffc80af690)
at /home/aalpert/depot/qt/qt-qml/src/gui/kernel/qapplication.cpp:4358
#10 0x00007ffff6bcfaf8 in QApplication::notify (this=0x7fffffffd590, receiver=0xdf6820, e=
0x7fffc80af690) at /home/aalpert/depot/qt/qt-qml/src/gui/kernel/qapplication.cpp:3762
#11 0x00007ffff62714c6 in QCoreApplication::notifyInternal (this=0x7fffffffd590, receiver=
0xdf6820, event=0x7fffc80af690)
at /home/aalpert/depot/qt/qt-qml/src/corelib/kernel/qcoreapplication.cpp:732
#12 0x00007ffff6bc2b6b in QCoreApplication::sendEvent (receiver=0xdf6820, event=
--Type <return> to continue, or q <return> to quit--
0x7fffc80af690)
at ../../include/QtCore/../../../../../depot/qt/qt-qml/src/corelib/kernel/qcoreapplication.h:215
#13 0x00007ffff6272738 in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=
0, data=0x613250)
at /home/aalpert/depot/qt/qt-qml/src/corelib/kernel/qcoreapplication.cpp:1373
#14 0x00007ffff6272353 in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0)
at /home/aalpert/depot/qt/qt-qml/src/corelib/kernel/qcoreapplication.cpp:1266
#15 0x00007ffff6ca078f in QCoreApplication::sendPostedEvents ()
at ../../include/QtCore/../../../../../depot/qt/qt-qml/src/corelib/kernel/qcoreapplication.h:220
#16 0x00007ffff62ab255 in postEventSourceDispatch (s=0x618020)
at /home/aalpert/depot/qt/qt-qml/src/corelib/kernel/qeventdispatcher_glib.cpp:276
#17 0x000000318fe3923e in g_main_context_dispatch () from /lib64/libglib-2.0.so.0
#18 0x000000318fe3cc28 in ?? () from /lib64/libglib-2.0.so.0
#19 0x000000318fe3cd4a in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#20 0x00007ffff62abb3b in QEventDispatcherGlib::processEvents (this=0x614610, flags=...)
at /home/aalpert/depot/qt/qt-qml/src/corelib/kernel/qeventdispatcher_glib.cpp:412
#21 0x00007ffff6cace6a in QGuiEventDispatcherGlib::processEvents (this=0x614610, flags=...)
at /home/aalpert/depot/qt/qt-qml/src/gui/kernel/qguieventdispatcher_glib.cpp:204
#22 0x00007ffff626eefc in QEventLoop::processEvents (this=0x7fffffffd490, flags=...)
at /home/aalpert/depot/qt/qt-qml/src/corelib/kernel/qeventloop.cpp:149
#23 0x00007ffff626f052 in QEventLoop::exec (this=0x7fffffffd490, flags=...)
at /home/aalpert/depot/qt/qt-qml/src/corelib/kernel/qeventloop.cpp:201
#24 0x00007ffff6271bc2 in QCoreApplication::exec ()
at /home/aalpert/depot/qt/qt-qml/src/corelib/kernel/qcoreapplication.cpp:1009
#25 0x00007ffff6bcf66a in QApplication::exec ()
at /home/aalpert/depot/qt/qt-qml/src/gui/kernel/qapplication.cpp:3637
#26 0x000000000040a958 in main (argc=1, argv=0x7fffffffddb8)
at /home/aalpert/depot/creator/mainline/src/app/main.cpp:319

This was a creator built from source (master) against Qt 4.7, creator HEAD revision was e07c34017e5fd9d9a9cb929c284be9004dd74b95