BT: Framebufferobject example crashes

Program received signal SIGSEGV, Segmentation fault.
0x00007ffff786939e in QScopedPointer<QGLContextPrivate, QScopedPointerDeleter<QGLContextPrivate> >::data (this=0x80750000000b) at ../../include/QtCore/../../../../dev/qt-everywhere-opensource-src-4.7.1/src/corelib/tools/qscopedpointer.h:135
135 return d;
(gdb) bt
#0 0x00007ffff786939e in QScopedPointer<QGLContextPrivate, QScopedPointerDeleter<QGLContextPrivate> >::data (this=0x80750000000b) at ../../include/QtCore/../../../../dev/qt-everywhere-opensource-src-4.7.1/src/corelib/tools/qscopedpointer.h:135
#1 0x00007ffff786329b in qGetPtrHelper<QScopedPointer<QGLContextPrivate, QScopedPointerDeleter<QGLContextPrivate> > > (p=...) at ../../include/QtCore/../../../../dev/qt-everywhere-opensource-src-4.7.1/src/corelib/global/qglobal.h:2338
#2 0x00007ffff786430e in QGLContext::d_func (this=0x807500000003) at /home/cduclos/dev/qt-everywhere-opensource-src-4.7.1/src/opengl/qgl.h:300
#3 0x00007ffff7857ee6 in QGLFormat::openGLVersionFlags () at /home/cduclos/dev/qt-everywhere-opensource-src-4.7.1/src/opengl/qgl.cpp:1386
#4 0x00007ffff787b0ae in QOpenGLPaintEngine::begin (this=0x6aab50, pdev=0x6778a0) at /home/cduclos/dev/qt-everywhere-opensource-src-4.7.1/src/opengl/qpaintengine_opengl.cpp:1334
#5 0x00007ffff6b83207 in QPainter::begin (this=0x7fffffffbed0, pd=0x6778a0) at /home/cduclos/dev/qt-everywhere-opensource-src-4.7.1/src/gui/painting/qpainter.cpp:1866
#6 0x00007ffff6b818c8 in QPainter::QPainter (this=0x7fffffffbed0, pd=0x6778a0) at /home/cduclos/dev/qt-everywhere-opensource-src-4.7.1/src/gui/painting/qpainter.cpp:1491
#7 0x000000000040696b in GLWidget::draw (this=0x7fffffffdc00) at /home/cduclos/dev/qt-everywhere-opensource-src-4.7.1/examples/opengl/framebufferobject/glwidget.cpp:145
#8 0x0000000000406906 in GLWidget::paintEvent (this=0x7fffffffdc00) at /home/cduclos/dev/qt-everywhere-opensource-src-4.7.1/examples/opengl/framebufferobject/glwidget.cpp:134
#9 0x00007ffff6a3afc9 in QWidget::event (this=0x7fffffffdc00, event=0x7fffffffca70) at /home/cduclos/dev/qt-everywhere-opensource-src-4.7.1/src/gui/kernel/qwidget.cpp:8346
#10 0x00007ffff785e486 in QGLWidget::event (this=0x7fffffffdc00, e=0x7fffffffca70) at /home/cduclos/dev/qt-everywhere-opensource-src-4.7.1/src/opengl/qgl.cpp:4240
#11 0x00007ffff69c4a0a in QApplicationPrivate::notify_helper (this=0x61d560, receiver=0x7fffffffdc00, e=0x7fffffffca70) at /home/cduclos/dev/qt-everywhere-opensource-src-4.7.1/src/gui/kernel/qapplication.cpp:4434
#12 0x00007ffff69c485d in QApplication::notify (this=0x7fffffffdc90, receiver=0x7fffffffdc00, e=0x7fffffffca70) at /home/cduclos/dev/qt-everywhere-opensource-src-4.7.1/src/gui/kernel/qapplication.cpp:4399
#13 0x00007ffff63ddc0c in QCoreApplication::notifyInternal (this=0x7fffffffdc90, receiver=0x7fffffffdc00, event=0x7fffffffca70) at /home/cduclos/dev/qt-everywhere-opensource-src-4.7.1/src/corelib/kernel/qcoreapplication.cpp:732
#14 0x00007ffff69c7263 in QCoreApplication::sendSpontaneousEvent (receiver=0x7fffffffdc00, event=0x7fffffffca70) at ../../include/QtCore/../../../../dev/qt-everywhere-opensource-src-4.7.1/src/corelib/kernel/qcoreapplication.h:218
#15 0x00007ffff6a327cb in QWidgetPrivate::drawWidget (this=0x6a0a70, pdev=0x7fffffffdc10, rgn=..., offset=..., flags=3, sharedPainter=0x0, backingStore=0x0) at /home/cduclos/dev/qt-everywhere-opensource-src-4.7.1/src/gui/kernel/qwidget.cpp:5433
#16 0x00007ffff6c97151 in QWidgetPrivate::repaint_sys (this=0x6a0a70, rgn=...) at /home/cduclos/dev/qt-everywhere-opensource-src-4.7.1/src/gui/painting/qbackingstore.cpp:1612
#17 0x00007ffff6a28d95 in QWidgetPrivate::syncBackingStore (this=0x6a0a70) at /home/cduclos/dev/qt-everywhere-opensource-src-4.7.1/src/gui/kernel/qwidget.cpp:1808
#18 0x00007ffff6a3b68a in QWidget::event (this=0x7fffffffdc00, event=0x6a3260) at /home/cduclos/dev/qt-everywhere-opensource-src-4.7.1/src/gui/kernel/qwidget.cpp:8493
#19 0x00007ffff785e486 in QGLWidget::event (this=0x7fffffffdc00, e=0x6a3260) at /home/cduclos/dev/qt-everywhere-opensource-src-4.7.1/src/opengl/qgl.cpp:4240
#20 0x00007ffff69c4a0a in QApplicationPrivate::notify_helper (this=0x61d560, receiver=0x7fffffffdc00, e=0x6a3260) at /home/cduclos/dev/qt-everywhere-opensource-src-4.7.1/src/gui/kernel/qapplication.cpp:4434
#21 0x00007ffff69c485d in QApplication::notify (this=0x7fffffffdc90, receiver=0x7fffffffdc00, e=0x6a3260) at /home/cduclos/dev/qt-everywhere-opensource-src-4.7.1/src/gui/kernel/qapplication.cpp:4399
#22 0x00007ffff63ddc0c in QCoreApplication::notifyInternal (this=0x7fffffffdc90, receiver=0x7fffffffdc00, event=0x6a3260) at /home/cduclos/dev/qt-everywhere-opensource-src-4.7.1/src/corelib/kernel/qcoreapplication.cpp:732
#23 0x00007ffff69b2ca5 in QCoreApplication::sendEvent (receiver=0x7fffffffdc00, event=0x6a3260) at ../../include/QtCore/../../../../dev/qt-everywhere-opensource-src-4.7.1/src/corelib/kernel/qcoreapplication.h:215
#24 0x00007ffff63dee7e in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x61d720) at /home/cduclos/dev/qt-everywhere-opensource-src-4.7.1/src/corelib/kernel/qcoreapplication.cpp:1373
#25 0x00007ffff63dea99 in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at /home/cduclos/dev/qt-everywhere-opensource-src-4.7.1/src/corelib/kernel/qcoreapplication.cpp:1266
#26 0x00007ffff6aa574f in QCoreApplication::sendPostedEvents () at ../../include/QtCore/../../../../dev/qt-everywhere-opensource-src-4.7.1/src/corelib/kernel/qcoreapplication.h:220
#27 0x00007ffff641bcb5 in postEventSourceDispatch (s=0x626500) at /home/cduclos/dev/qt-everywhere-opensource-src-4.7.1/src/corelib/kernel/qeventdispatcher_glib.cpp:277
#28 0x00007ffff395ddee in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#29 0x00007ffff39617b8 in ?? () from /usr/lib64/libglib-2.0.so.0
#30 0x00007ffff39618e0 in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#31 0x00007ffff641cfa3 in QEventDispatcherGlib::processEvents (this=0x622ab0, flags=...) at /home/cduclos/dev/qt-everywhere-opensource-src-4.7.1/src/corelib/kernel/qeventdispatcher_glib.cpp:415
#32 0x00007ffff6ab2e18 in QGuiEventDispatcherGlib::processEvents (this=0x622ab0, flags=...) at /home/cduclos/dev/qt-everywhere-opensource-src-4.7.1/src/gui/kernel/qguieventdispatcher_glib.cpp:204
#33 0x00007ffff63dac0c in QEventLoop::processEvents (this=0x7fffffffdb90, flags=...) at /home/cduclos/dev/qt-everywhere-opensource-src-4.7.1/src/corelib/kernel/qeventloop.cpp:149
#34 0x00007ffff63dad62 in QEventLoop::exec (this=0x7fffffffdb90, flags=...) at /home/cduclos/dev/qt-everywhere-opensource-src-4.7.1/src/corelib/kernel/qeventloop.cpp:201
#35 0x00007ffff63de308 in QCoreApplication::exec () at /home/cduclos/dev/qt-everywhere-opensource-src-4.7.1/src/corelib/kernel/qcoreapplication.cpp:1009
#36 0x00007ffff69c1a6a in QApplication::exec () at /home/cduclos/dev/qt-everywhere-opensource-src-4.7.1/src/gui/kernel/qapplication.cpp:3708
#37 0x0000000000407ff5 in main (argc=1, argv=0x7fffffffddc8) at /home/cduclos/dev/qt-everywhere-opensource-src-4.7.1/examples/opengl/framebufferobject/main.cpp:59