#0 octave_base_value::type_name (this=0x7fe3f84a5cd0 ) at ../libinterp/octave-value/ov-base.h:831 #1 0x00007fe3f7519e0a in octave_base_value::convert_to_str_internal (this=) at ../libinterp/octave-value/ov-base.cc:388 #2 0x00007fe3f751a4b6 in octave_base_value::convert_to_str (this=0x7fe3f84a5cd0 , pad=, force=, type=) at ../libinterp/octave-value/ov-base.cc:375 #3 0x00007fe3f751a617 in octave_base_value::string_value (this=, force=) at ../libinterp/octave-value/ov-base.cc:908 #4 0x00007fe3f77cf514 in string_value (this=0x7ffe57d57e60, force=false) at ../libinterp/octave-value/ov.h:898 #5 opengl_renderer::set_font (this=0x7ffe57d58240, props=...) at ../libinterp/corefcn/gl-render.cc:2902 #6 0x00007fe3f77d52a2 in opengl_renderer::draw_axes (this=0x7ffe57d58240, props=...) at ../libinterp/corefcn/gl-render.cc:1477 #7 0x00007fe3f77cf7fe in opengl_renderer::draw (this=0x7ffe57d58240, go=..., toplevel=) at ../libinterp/corefcn/gl-render.cc:589 #8 0x00007fe3f81c9024 in opengl_renderer::draw (this=this@entry=0x7ffe57d58240, hlist=..., toplevel=toplevel@entry=false) at ../libinterp/corefcn/gl-render.h:81 #9 0x00007fe3f77d883e in opengl_renderer::draw_figure (this=0x7ffe57d58240, props=...) at ../libinterp/corefcn/gl-render.cc:615 #10 0x00007fe3f77cf7fe in opengl_renderer::draw (this=this@entry=0x7ffe57d58240, go=..., toplevel=toplevel@entry=true) at ../libinterp/corefcn/gl-render.cc:589 #11 0x00007fe3f81b3c91 in QtHandles::GLCanvas::draw (this=0x7f6f720, gh=...) at ../libgui/graphics/GLCanvas.cc:67 #12 0x00007fe3f81a27ed in QtHandles::Canvas::canvasPaintEvent (this=0x7f6f748) at ../libgui/graphics/Canvas.cc:319 #13 0x00007fe3f4f50760 in QGLWidget::glDraw() () from /usr/lib/x86_64-linux-gnu/libQtOpenGL.so.4 #14 0x00007fe3f4f4e8e9 in QGLWidget::paintEvent(QPaintEvent*) () from /usr/lib/x86_64-linux-gnu/libQtOpenGL.so.4 #15 0x00007fe3f448a300 in QWidget::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4 #16 0x00007fe3f4f596b1 in QGLWidget::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtOpenGL.so.4 #17 0x00007fe3f443ae2c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4 #18 0x00007fe3f44414a0 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4 #19 0x00007fe3f3f094dd in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4 #20 0x00007fe3f4484a21 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4 #21 0x00007fe3f4645b9b in QWidgetPrivate::repaint_sys(QRegion const&) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4 #22 0x00007fe3f4479e47 in QWidgetPrivate::syncBackingStore() () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4 #23 0x00007fe3f4489e7a in QWidget::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4 #24 0x00007fe3f4f596b1 in QGLWidget::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtOpenGL.so.4 #25 0x00007fe3f443ae2c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4 #26 0x00007fe3f44414a0 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4 #27 0x00007fe3f3f094dd in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4 #28 0x00007fe3f3f0cb3d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4 #29 0x00007fe3f3f36f83 in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4 #30 0x00007fe3ee388e04 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #31 0x00007fe3ee389048 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #32 0x00007fe3ee3890ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #33 0x00007fe3f3f367a1 in QEventDispatcherGlib::processEvents(QFlags) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4 #34 0x00007fe3f44dcbe6 in ?? () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4 #35 0x00007fe3f3f080af in QEventLoop::processEvents(QFlags) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4 #36 0x00007fe3f3f083a5 in QEventLoop::exec(QFlags) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4 #37 0x00007fe3f3f0db79 in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4 #38 0x00007fe3f813bea1 in octave_start_gui (argc=1, argv=0x7ffe57d595a8, start_gui=) at ../libgui/src/octave-gui.cc:198 #39 0x00007fe3f6825ec5 in __libc_start_main (main=0x4008a0 , argc=1, argv=0x7ffe57d595a8, init=, fini=, rtld_fini=, stack_end=0x7ffe57d59598) at libc-start.c:287 #40 0x000000000040092f in _start ()