$ gdb quasselclient GNU gdb (Gentoo 7.7 p1) 7.7 Copyright (C) 2014 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-pc-linux-gnu". Type "show configuration" for configuration details. For bug reporting instructions, please see: . Find the GDB manual and other documentation resources online at: . For help, type "help". Type "apropos word" to search for commands related to "word"... Reading symbols from quasselclient...Reading symbols from /usr/lib64/debug//usr/bin/quasselclient.debug...(no debugging symbols found)...done. (no debugging symbols found)...done. (gdb) r Starting program: /usr/bin/quasselclient warning: Could not load shared library symbols for linux-vdso.so.1. Do you need "set solib-search-path" or "set sysroot"? [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". Fontconfig warning: "/etc/fonts/conf.d/59-google-droid-sans.conf", line 61: Having multiple values in isn't supported and may not work as expected Fontconfig warning: "/etc/fonts/conf.d/59-google-droid-sans.conf", line 96: Having multiple values in isn't supported and may not work as expected No DockManager available [New Thread 0x7ffff4641700 (LWP 26990)] Enabling compression... Using the DataStream protocol... Starting encryption... Program received signal SIGFPE, Arithmetic exception. 0x00000031beb4874a in QCleanlooksStyle::drawControl(QStyle::ControlElement, QStyleOption const*, QPainter*, QWidget const*) const () from /usr/lib64/qt4/libQtGui.so.4 (gdb) bt #0 0x00000031beb4874a in QCleanlooksStyle::drawControl(QStyle::ControlElement, QStyleOption const*, QPainter*, QWidget const*) const () from /usr/lib64/qt4/libQtGui.so.4 #1 0x00000031beb07402 in QStyleSheetStyle::drawControl(QStyle::ControlElement, QStyleOption const*, QPainter*, QWidget const*) const () from /usr/lib64/qt4/libQtGui.so.4 #2 0x00000031beae4ee8 in QCommonStyle::drawControl(QStyle::ControlElement, QStyleOption const*, QPainter*, QWidget const*) const () from /usr/lib64/qt4/libQtGui.so.4 #3 0x00000031beb5c96f in QWindowsStyle::drawControl(QStyle::ControlElement, QStyleOption const*, QPainter*, QWidget const*) const () from /usr/lib64/qt4/libQtGui.so.4 #4 0x00000031beb07a94 in QStyleSheetStyle::drawControl(QStyle::ControlElement, QStyleOption const*, QPainter*, QWidget const*) const () from /usr/lib64/qt4/libQtGui.so.4 #5 0x00000031bebfa4f7 in QProgressBar::paintEvent(QPaintEvent*) () from /usr/lib64/qt4/libQtGui.so.4 #6 0x00000031be8197b3 in QWidget::event(QEvent*) () from /usr/lib64/qt4/libQtGui.so.4 #7 0x00000031bebfaf28 in QProgressBar::event(QEvent*) () from /usr/lib64/qt4/libQtGui.so.4 #8 0x00000031be7c75cc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/qt4/libQtGui.so.4 #9 0x00000031be7cdda8 in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/qt4/libQtGui.so.4 #10 0x0000003dc7b7ffac in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib64/qt4/libQtCore.so.4 #11 0x00000031be813bf1 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib64/qt4/libQtGui.so.4 #12 0x00000031be8146f7 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib64/qt4/libQtGui.so.4 #13 0x00000031be8137ab in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib64/qt4/libQtGui.so.4 #14 0x00000031be8146f7 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib64/qt4/libQtGui.so.4 #15 0x00000031be8137ab in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib64/qt4/libQtGui.so.4 #16 0x00000031be8146f7 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib64/qt4/libQtGui.so.4 #17 0x00000031be8137ab in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib64/qt4/libQtGui.so.4 #18 0x00000031be9df4b8 in QWidgetBackingStore::sync() () from /usr/lib64/qt4/libQtGui.so.4 #19 0x00000031be8089a0 in QWidgetPrivate::syncBackingStore() () from /usr/lib64/qt4/libQtGui.so.4 #20 0x00000031be819322 in QWidget::event(QEvent*) () from /usr/lib64/qt4/libQtGui.so.4 #21 0x00000031bebc98ab in QMainWindow::event(QEvent*) () from /usr/lib64/qt4/libQtGui.so.4 #22 0x00000000004bd42b in MainWin::event(QEvent*) () #23 0x00000031be7c75cc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/qt4/libQtGui.so.4 #24 0x00000031be7cdda8 in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/qt4/libQtGui.so.4 #25 0x0000003dc7b7ffac in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib64/qt4/libQtCore.so.4 #26 0x0000003dc7b83125 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib64/qt4/libQtCore.so.4 #27 0x0000003dc7bae313 in postEventSourceDispatch(_GSource*, int (*)(void*), void*) () from /usr/lib64/qt4/libQtCore.so.4 #28 0x0000003dc2a49a3f in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0 #29 0x0000003dc2a49dc8 in g_main_context_iterate.isra () from /usr/lib64/libglib-2.0.so.0 #30 0x0000003dc2a49e8c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0 #31 0x0000003dc7badba3 in QEventDispatcherGlib::processEvents(QFlags) () from /usr/lib64/qt4/libQtCore.so.4 #32 0x00000031be868506 in QGuiEventDispatcherGlib::processEvents(QFlags) () from /usr/lib64/qt4/libQtGui.so.4 #33 0x0000003dc7b7eb0f in QEventLoop::processEvents(QFlags) () from /usr/lib64/qt4/libQtCore.so.4 #34 0x0000003dc7b7ee4d in QEventLoop::exec(QFlags) () from /usr/lib64/qt4/libQtCore.so.4 #35 0x0000003dc7b8416b in QCoreApplication::exec() () from /usr/lib64/qt4/libQtCore.so.4 #36 0x00000000004ab65c in main () (gdb)