(gdb) cont Continuing. (gdb) Thread 1 "lt-octave-gui" received signal SIGSEGV, Segmentation fault. 0x00007f12aa406b5d in QPlatformTheme::themeHint (this=, hint=QPlatformTheme::WheelScrollLines) at kernel/qplatformtheme.cpp:477 477 return QPlatformTheme::defaultThemeHint(hint); (gdb) backtrace #0 0x00007f12aa406b5d in QPlatformTheme::themeHint(QPlatformTheme::ThemeHint) const (this=, hint=QPlatformTheme::WheelScrollLines) at kernel/qplatformtheme.cpp:477 #1 0x00007f12919030c8 in QGnomeTheme::themeHint(QPlatformTheme::ThemeHint) const (this=this@entry=0x20f6040, hint=) at genericunix/qgenericunixthemes.cpp:767 #2 0x00007f12918fd0bb in QGtk3Theme::themeHint(QPlatformTheme::ThemeHint) const (this=0x20f6040, hint=) at qgtk3theme.cpp:138 #3 0x00007f12aa4434c3 in themeableHint (ih=QPlatformIntegration::WheelScrollLines, th=QPlatformTheme::WheelScrollLines) at kernel/qstylehints.cpp:61 #4 QStyleHints::wheelScrollLines() const (this=) at kernel/qstylehints.cpp:527 #5 0x00007f12aaaa8dab in QAbstractSliderPrivate::scrollByDelta(Qt::Orientation, QFlags, int) (this=this@entry=0x330b310, orientation=, modifiers=..., delta=) at widgets/qabstractslider.cpp:712 #6 0x00007f12aab50160 in QScrollBar::wheelEvent(QWheelEvent*) (this=, event=0x7ffcda48a320) at ../../include/QtGui/../../src/gui/kernel/qevent.h:207 #7 0x00007f12aa9f0c4e in QWidget::event(QEvent*) (this=this@entry=0x3847bb0, event=event@entry=0x7ffcda48a320) at kernel/qwidget.cpp:8977 #8 0x00007f12aaaa8fc9 in QAbstractSlider::event(QEvent*) (this=this@entry=0x3847bb0, e=e@entry=0x7ffcda48a320) at widgets/qabstractslider.cpp:955 #9 0x00007f12aab51ffb in QScrollBar::event(QEvent*) (this=0x3847bb0, event=0x7ffcda48a320) at widgets/qscrollbar.cpp:490 #10 0x00007f12aa9adab6 in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=, receiver=0x3847bb0, e=0x7ffcda48a320) at kernel/qapplication.cpp:3703 #11 0x00007f12aa9b8fb4 in QApplication::notify(QObject*, QEvent*) () at kernel/qapplication.cpp:3256 #12 0x00007f12ad0a134d in octave::octave_qapplication::notify(QObject*, QEvent*) (this=0x2043730, receiver=0x3847bb0, ev=0x7ffcda48a770) at libgui/src/octave-qobject.cc:132 #13 0x00007f12aa039448 in QCoreApplication::notifyInternal2(QObject*, QEvent*) (receiver=0x3847bb0, event=0x7ffcda48a770) at kernel/qcoreapplication.cpp:1095 #14 0x00007f12aa9f0c4e in QWidget::event(QEvent*) (this=0x258a9f0, event=0x7ffcda48a770) at kernel/qwidget.cpp:8977 #15 0x00007f12ad0708b4 in octave::octave_qscintilla::event(QEvent*) (this=0x258a9f0, e=0x7ffcda48a770) at libgui/src/m-editor/octave-qscintilla.cc:1147 #16 0x00007f12aa9adab6 in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=, receiver=0x258a9f0, e=0x7ffcda48a770) at kernel/qapplication.cpp:3703 #17 0x00007f12aa9b8fb4 in QApplication::notify(QObject*, QEvent*) () at kernel/qapplication.cpp:3256 #18 0x00007f12ad0a134d in octave::octave_qapplication::notify(QObject*, QEvent*) (this=0x2043730, receiver=0x3847bb0, ev=0x7ffcda48abc0) at libgui/src/octave-qobject.cc:132 #19 0x00007f12aa039448 in QCoreApplication::notifyInternal2(QObject*, QEvent*) (receiver=0x3847bb0, event=0x7ffcda48abc0) at kernel/qcoreapplication.cpp:1095 #20 0x00007f12aa9f0c4e in QWidget::event(QEvent*) (this=0x258a9f0, event=0x7ffcda48abc0) at kernel/qwidget.cpp:8977 #21 0x00007f12ad0708b4 in octave::octave_qscintilla::event(QEvent*) (this=0x258a9f0, e=0x7ffcda48abc0) at libgui/src/m-editor/octave-qscintilla.cc:1147 #22 0x00007f12aa9adab6 in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=, receiver=0x258a9f0, e=0x7ffcda48abc0) at kernel/qapplication.cpp:3703 #23 0x00007f12aa9b8fb4 in QApplication::notify(QObject*, QEvent*) () at kernel/qapplication.cpp:3256 #24 0x00007f12ad0a134d in octave::octave_qapplication::notify(QObject*, QEvent*) (this=0x2043730, receiver=0x3847bb0, ev=0x7ffcda48b010) at libgui/src/octave-qobject.cc:132 #25 0x00007f12aa039448 in QCoreApplication::notifyInternal2(QObject*, QEvent*) (receiver=0x3847bb0, event=0x7ffcda48b010) at kernel/qcoreapplication.cpp:1095 #26 0x00007f12aa9f0c4e in QWidget::event(QEvent*) (this=0x258a9f0, event=0x7ffcda48b010) at kernel/qwidget.cpp:8977 #27 0x00007f12ad0708b4 in octave::octave_qscintilla::event(QEvent*) (this=0x258a9f0, e=0x7ffcda48b010) at libgui/src/m-editor/octave-qscintilla.cc:1147 #28 0x00007f12aa9adab6 in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=, receiver=0x258a9f0, e=0x7ffcda48b010) at kernel/qapplication.cpp:3703 #29 0x00007f12aa9b8fb4 in QApplication::notify(QObject*, QEvent*) () at kernel/qapplication.cpp:3256 #30 0x00007f12ad0a134d in octave::octave_qapplication::notify(QObject*, QEvent*) (this=0x2043730, receiver=0x3847bb0, ev=0x7ffcda48b460) at libgui/src/octave-qobject.cc:132 #31 0x00007f12aa039448 in QCoreApplication::notifyInternal2(QObject*, QEvent*) (receiver=0x3847bb0, event=0x7ffcda48b460) at kernel/qcoreapplication.cpp:1095 #32 0x00007f12aa9f0c4e in QWidget::event(QEvent*) (this=0x258a9f0, event=0x7ffcda48b460) at kernel/qwidget.cpp:8977 #33 0x00007f12ad0708b4 in octave::octave_qscintilla::event(QEvent*) (this=0x258a9f0, e=0x7ffcda48b460) at libgui/src/m-editor/octave-qscintilla.cc:1147 #34 0x00007f12aa9adab6 in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=, receiver=0x258a9f0, e=0x7ffcda48b460) at kernel/qapplication.cpp:3703 #35 0x00007f12aa9b8fb4 in QApplication::notify(QObject*, QEvent*) () at kernel/qapplication.cpp:3256 #36 0x00007f12ad0a134d in octave::octave_qapplication::notify(QObject*, QEvent*) (this=0x2043730, receiver=0x3847bb0, ev=0x7ffcda48b8b0) at libgui/src/octave-qobject.cc:132 #37 0x00007f12aa039448 in QCoreApplication::notifyInternal2(QObject*, QEvent*) (receiver=0x3847bb0, event=0x7ffcda48b8b0) at kernel/qcoreapplication.cpp:1095 #38 0x00007f12aa9f0c4e in QWidget::event(QEvent*) (this=0x258a9f0, event=0x7ffcda48b8b0) at kernel/qwidget.cpp:8977 #39 0x00007f12ad0708b4 in octave::octave_qscintilla::event(QEvent*) (this=0x258a9f0, e=0x7ffcda48b8b0) at libgui/src/m-editor/octave-qscintilla.cc:1147 #40 0x00007f12aa9adab6 in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=, receiver=0x258a9f0, e=0x7ffcda48b8b0) at kernel/qapplication.cpp:3703 #41 0x00007f12aa9b8fb4 in QApplication::notify(QObject*, QEvent*) () at kernel/qapplication.cpp:3256 #42 0x00007f12ad0a134d in octave::octave_qapplication::notify(QObject*, QEvent*) (this=0x2043730, receiver=0x3847bb0, ev=0x7ffcda48bd00) at libgui/src/octave-qobject.cc:132 #43 0x00007f12aa039448 in QCoreApplication::notifyInternal2(QObject*, QEvent*) (receiver=0x3847bb0, event=0x7ffcda48bd00) at kernel/qcoreapplication.cpp:1095 #44 0x00007f12aa9f0c4e in QWidget::event(QEvent*) (this=0x258a9f0, event=0x7ffcda48bd00) at kernel/qwidget.cpp:8977 #45 0x00007f12ad0708b4 in octave::octave_qscintilla::event(QEvent*) (this=0x258a9f0, e=0x7ffcda48bd00) at libgui/src/m-editor/octave-qscintilla.cc:1147 #46 0x00007f12aa9adab6 in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=, receiver=0x258a9f0, e=0x7ffcda48bd00) at kernel/qapplication.cpp:3703 #47 0x00007f12aa9b8fb4 in QApplication::notify(QObject*, QEvent*) () at kernel/qapplication.cpp:3256 #48 0x00007f12ad0a134d in octave::octave_qapplication::notify(QObject*, QEvent*) (this=0x2043730, receiver=0x3847bb0, ev=0x7ffcda48c150) at libgui/src/octave-qobject.cc:132 #49 0x00007f12aa039448 in QCoreApplication::notifyInternal2(QObject*, QEvent*) (receiver=0x3847bb0, event=0x7ffcda48c150) at kernel/qcoreapplication.cpp:1095 #50 0x00007f12aa9f0c4e in QWidget::event(QEvent*) (this=0x258a9f0, event=0x7ffcda48c150) at kernel/qwidget.cpp:8977 #51 0x00007f12ad0708b4 in octave::octave_qscintilla::event(QEvent*) (this=0x258a9f0, e=0x7ffcda48c150) at libgui/src/m-editor/octave-qscintilla.cc:1147 #52 0x00007f12aa9adab6 in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=, receiver=0x258a9f0, e=0x7ffcda48c150) at kernel/qapplication.cpp:3703 #53 0x00007f12aa9b8fb4 in QApplication::notify(QObject*, QEvent*) () at kernel/qapplication.cpp:3256 #54 0x00007f12ad0a134d in octave::octave_qapplication::notify(QObject*, QEvent*) (this=0x2043730, receiver=0x3847bb0, ev=0x7ffcda48c5a0) at libgui/src/octave-qobject.cc:132 #55 0x00007f12aa039448 in QCoreApplication::notifyInternal2(QObject*, QEvent*) (receiver=0x3847bb0, event=0x7ffcda48c5a0) at kernel/qcoreapplication.cpp:1095 #56 0x00007f12aa9f0c4e in QWidget::event(QEvent*) (this=0x258a9f0, event=0x7ffcda48c5a0) at kernel/qwidget.cpp:8977 #57 0x00007f12ad0708b4 in octave::octave_qscintilla::event(QEvent*) (this=0x258a9f0, e=0x7ffcda48c5a0) at libgui/src/m-editor/octave-qscintilla.cc:1147 #58 0x00007f12aa9adab6 in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=, receiver=0x258a9f0, e=0x7ffcda48c5a0) at kernel/qapplication.cpp:3703 #59 0x00007f12aa9b8fb4 in QApplication::notify(QObject*, QEvent*) () at kernel/qapplication.cpp:3256 #60 0x00007f12ad0a134d in octave::octave_qapplication::notify(QObject*, QEvent*) (this=0x2043730, receiver=0x3847bb0, ev=0x7ffcda48c9f0) at libgui/src/octave-qobject.cc:132 #61 0x00007f12aa039448 in QCoreApplication::notifyInternal2(QObject*, QEvent*) (receiver=0x3847bb0, event=0x7ffcda48c9f0) at kernel/qcoreapplication.cpp:1095 #62 0x00007f12aa9f0c4e in QWidget::event(QEvent*) (this=0x258a9f0, event=0x7ffcda48c9f0) at kernel/qwidget.cpp:8977 #63 0x00007f12ad0708b4 in octave::octave_qscintilla::event(QEvent*) (this=0x258a9f0, e=0x7ffcda48c9f0) at libgui/src/m-editor/octave-qscintilla.cc:1147 #64 0x00007f12aa9adab6 in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=, receiver=0x258a9f0, e=0x7ffcda48c9f0) at kernel/qapplication.cpp:3703 #65 0x00007f12aa9b8fb4 in QApplication::notify(QObject*, QEvent*) () at kernel/qapplication.cpp:3256 #66 0x00007f12ad0a134d in octave::octave_qapplication::notify(QObject*, QEvent*) (this=0x2043730, receiver=0x3847bb0, ev=0x7ffcda48ce40) at libgui/src/octave-qobject.cc:132 #67 0x00007f12aa039448 in QCoreApplication::notifyInternal2(QObject*, QEvent*) (receiver=0x3847bb0, event=0x7ffcda48ce40) at kernel/qcoreapplication.cpp:1095