(gdb) run
Starting program: /usr/lib/freecad/bin/FreeCAD 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
FreeCAD 0.15, Libs: 0.15R4343 (Git)
© Juergen Riegel, Werner Mayer, Yorik van Havre 2001-2014
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[New Thread 0x7fffdb25e700 (LWP 3995)]
[New Thread 0x7fffd965f700 (LWP 3996)]
[New Thread 0x7fffd1fbf700 (LWP 3997)]
[New Thread 0x7fff916bc700 (LWP 3998)]
[New Thread 0x7fff9087d700 (LWP 3999)]
[New Thread 0x7fff8aedb700 (LWP 4000)]
[New Thread 0x7fff8a6da700 (LWP 4001)]
[New Thread 0x7fff89cbe700 (LWP 4002)]
[New Thread 0x7fff88d6a700 (LWP 4003)]
[New Thread 0x7fff73fff700 (LWP 4004)]

Program received signal SIGSEGV, Segmentation fault.
App::PropertyFileIncluded::getValue (this=0x80) at /c/temp/src/freecad/src/App/PropertyFile.cpp:236
236          return _cValue.c_str();
(gdb) bt
#0  App::PropertyFileIncluded::getValue (this=0x80) at /c/temp/src/freecad/src/App/PropertyFile.cpp:236
#1  0x00007fff6824df24 in DrawingGui::ViewProviderDrawingPage::doubleClicked (this=0x2342340)
    at /c/temp/src/freecad/src/Mod/Drawing/Gui/ViewProviderPage.cpp:134
#2  0x00007ffff7661555 in Gui::TreeWidget::mouseDoubleClickEvent (this=0xa26940, event=0x7fffffffc950)
    at /c/temp/src/freecad/src/Gui/Tree.cpp:359
#3  0x00007ffff5bac639 in QWidget::event (this=0x80, this@entry=0xa26940, event=0x0, event@entry=0x7fffffffc950)
    at kernel/qwidget.cpp:8393
#4  0x00007ffff5f559fe in QFrame::event (this=0xa26940, e=0x7fffffffc950) at widgets/qframe.cpp:557
#5  0x00007ffff60648b3 in QAbstractItemView::viewportEvent (this=this@entry=0xa26940, 
    event=event@entry=0x7fffffffc950) at itemviews/qabstractitemview.cpp:1644
#6  0x00007ffff60a4870 in QTreeView::viewportEvent (this=0xa26940, event=0x7fffffffc950)
    at itemviews/qtreeview.cpp:1252
#7  0x00007ffff53e79d6 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=this@entry=0x784230, 
    receiver=receiver@entry=0xa21890, event=event@entry=0x7fffffffc950) at kernel/qcoreapplication.cpp:1063
#8  0x00007ffff5b5c0fc in QApplicationPrivate::notify_helper (this=this@entry=0x784230, 
    receiver=receiver@entry=0xa21890, e=e@entry=0x7fffffffc950) at kernel/qapplication.cpp:4566
#9  0x00007ffff5b629be in QApplication::notify (this=this@entry=0x7fffffffd4e0, receiver=receiver@entry=0xa21890, 
    e=e@entry=0x7fffffffc950) at kernel/qapplication.cpp:4113
#10 0x00007ffff7540625 in Gui::GUIApplication::notify (this=0x7fffffffd4e0, receiver=0xa21890, event=0x7fffffffc950)
    at /c/temp/src/freecad/src/Gui/Application.cpp:1537
#11 0x00007ffff53e786d in QCoreApplication::notifyInternal (this=0x7fffffffd4e0, receiver=receiver@entry=0xa21890, 
    event=event@entry=0x7fffffffc950) at kernel/qcoreapplication.cpp:953
#12 0x00007ffff5b6207f in sendEvent (event=<optimized out>, receiver=<optimized out>)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#13 QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0xa21890, event=event@entry=0x7fffffffc950, 
    alienWidget=alienWidget@entry=0xa21890, nativeWidget=nativeWidget@entry=0x13e8d80, 
    buttonDown=buttonDown@entry=0x7ffff6650578 <qt_button_down>, lastMouseReceiver=..., spontaneous=true)
    at kernel/qapplication.cpp:3178
#14 0x00007ffff5bd7bde in QETWidget::translateMouseEvent (this=this@entry=0x13e8d80, 
    event=event@entry=0x7fffffffccb0) at kernel/qapplication_x11.cpp:4634
#15 0x00007ffff5bd7477 in QApplication::x11ProcessEvent (this=0x7fffffffd4e0, event=event@entry=0x7fffffffccb0)
    at kernel/qapplication_x11.cpp:3627
#16 0x00007ffff5bff432 in x11EventSourceDispatch (s=0x785800, callback=0x0, user_data=0x0)
    at kernel/qguieventdispatcher_glib.cpp:146
#17 0x00007fffee7e0c5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#18 0x00007fffee7e0f48 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#19 0x00007fffee7e0ffc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
---Type <return> to continue, or q <return> to quit---
#20 0x00007ffff5415031 in QEventDispatcherGlib::processEvents (this=0x745ce0, flags=...)
    at kernel/qeventdispatcher_glib.cpp:434
#21 0x00007ffff5bff4e6 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...)
    at kernel/qguieventdispatcher_glib.cpp:204
#22 0x00007ffff53e64f1 in QEventLoop::processEvents (this=this@entry=0x7fffffffd090, flags=...)
    at kernel/qeventloop.cpp:149
#23 0x00007ffff53e6805 in QEventLoop::exec (this=this@entry=0x7fffffffd090, flags=...) at kernel/qeventloop.cpp:204
#24 0x00007ffff53ebf67 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1225
#25 0x00007ffff5b5a4dc in QApplication::exec () at kernel/qapplication.cpp:3828
#26 0x00007ffff75375cc in Gui::Application::runApplication () at /c/temp/src/freecad/src/Gui/Application.cpp:1807
#27 0x0000000000404278 in main (argc=1, argv=<optimized out>) at /c/temp/src/freecad/src/Main/MainGui.cpp:330
(gdb)