$ gdb /home/michi/development/git/qt5/qtbase/examples/corelib/ipc/sharedmemory/sharedmemory GNU gdb (Debian 13.2-1) 13.2 Copyright (C) 2023 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-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 /home/michi/development/git/qt5/qtbase/examples/corelib/ipc/sharedmemory/sharedmemory... (gdb) r Starting program: /home/michi/development/git/qt5/qtbase/examples/corelib/ipc/sharedmemory/sharedmemory [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". [New Thread 0x7ffff13ff6c0 (LWP 973803)] [New Thread 0x7ffff0bfe6c0 (LWP 973804)] [New Thread 0x7fffeb9ff6c0 (LWP 973807)] /usr/include/c++/13/debug/safe_iterator.h:492: In function: bool gnu_debug::operator!=(const _Safe_iterator >, std::debug::map, std::allocator > >, std::forward_iterator_tag>::_Self&, const _Safe_iterator >, std::debug::map, std::allocator > >, std::forward_iterator_tag>::_Self&) Error: attempt to compare a singular iterator to a singular (value-initialized) iterator. Objects involved in the operation: iterator "lhs" @ 0x7fffffff9350 { type = std::_Rb_tree_const_iterator > (constant iterator); state = singular; } iterator "rhs" @ 0x7fffffff9470 { type = std::_Rb_tree_const_iterator > (constant iterator); state = singular (value-initialized); } Thread 1 "sharedmemory" received signal SIGABRT, Aborted. __pthread_kill_implementation (threadid=, signo=signo@entry=6, no_tid=no_tid@entry=0) at ./nptl/pthread_kill.c:44 44 ./nptl/pthread_kill.c: No such file or directory. (gdb) thread apply all bt Thread 4 (Thread 0x7fffeb9ff6c0 (LWP 973807) "QFileInfoGather"): #0 __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x55555569ebb0) at ./nptl/futex-internal.c:57 #1 __futex_abstimed_wait_common (futex_word=futex_word@entry=0x55555569ebb0, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0, cancel=cancel@entry=true) at ./nptl/futex-internal.c:87 #2 0x00007ffff50a31bb in __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x55555569ebb0, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139 #3 0x00007ffff50a5818 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55555569eb60, cond=0x55555569eb88) at ./nptl/pthread_cond_wait.c:503 #4 ___pthread_cond_wait (cond=0x55555569eb88, mutex=0x55555569eb60) at ./nptl/pthread_cond_wait.c:618 #5 0x00007ffff5a89ece in QWaitConditionPrivate::wait (this=0x55555569eb60, deadline=...) at /home/michi/development/git/qt5/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:102 #6 0x00007ffff5a89ace in QWaitCondition::wait (this=0x55555561f240, mutex=0x55555561f238, deadline=...) at /home/michi/development/git/qt5/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:180 #7 0x00007ffff6a8ec1c in QFileInfoGatherer::run (this=0x55555561f228) at /home/michi/development/git/qt5/qtbase/src/gui/itemmodels/qfileinfogatherer.cpp:286 #8 0x00007ffff5a6c47e in operator() (__closure=0x7fffeb9fed38) at /home/michi/development/git/qt5/qtbase/src/corelib/thread/qthread_unix.cpp:326 #9 0x00007ffff5a6d498 in (anonymous namespace)::terminate_on_exception >(struct {...} &&) (t=...) at /home/michi/development/git/qt5/qtbase/src/corelib/thread/qthread_unix.cpp:262 #10 0x00007ffff5a6c514 in QThreadPrivate::start (arg=0x55555561f228) at /home/michi/development/git/qt5/qtbase/src/corelib/thread/qthread_unix.cpp:285 #11 0x00007ffff50a63ec in start_thread (arg=) at ./nptl/pthread_create.c:444 #12 0x00007ffff5126a4c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:81 Thread 3 (Thread 0x7ffff0bfe6c0 (LWP 973804) "QXcbEventQueue"): #0 0x00007ffff5119a1f in __GI___poll (fds=0x7ffff0bfdab8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29 #1 0x00007ffff5471d12 in ?? () from /lib/x86_64-linux-gnu/libxcb.so.1 #2 0x00007ffff547407a in xcb_wait_for_event () from /lib/x86_64-linux-gnu/libxcb.so.1 #3 0x00007ffff1b02f2e in QXcbEventQueue::run (this=0x55555559f890) at /home/michi/development/git/qt5/qtbase/src/plugins/platforms/xcb/qxcbeventqueue.cpp:192 #4 0x00007ffff5a6c47e in operator() (__closure=0x7ffff0bfdd38) at /home/michi/development/git/qt5/qtbase/src/corelib/thread/qthread_unix.cpp:326 #5 0x00007ffff5a6d498 in (anonymous namespace)::terminate_on_exception >(struct {...} &&) (t=...) at /home/michi/development/git/qt5/qtbase/src/corelib/thread/qthread_unix.cpp:262 #6 0x00007ffff5a6c514 in QThreadPrivate::start (arg=0x55555559f890) at /home/michi/development/git/qt5/qtbase/src/corelib/thread/qthread_unix.cpp:285 #7 0x00007ffff50a63ec in start_thread (arg=) at ./nptl/pthread_create.c:444 #8 0x00007ffff5126a4c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:81 Thread 2 (Thread 0x7ffff13ff6c0 (LWP 973803) "QDBusConnection"): #0 0x00007ffff5119a1f in __GI___poll (fds=0x55555561b750, nfds=4, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29 #1 0x00007ffff5514277 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007ffff5514930 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007ffff5c2d27f in QEventDispatcherGlib::processEvents (this=0x7fffec000b70, flags=...) at /home/michi/development/git/qt5/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:394 #4 0x00007ffff57c5389 in QEventLoop::processEvents (this=0x7ffff13feb60, flags=...) at /home/michi/development/git/qt5/qtbase/src/corelib/kernel/qeventloop.cpp:100 #5 0x00007ffff57c56b9 in QEventLoop::exec (this=0x7ffff13feb60, flags=...) at /home/michi/development/git/qt5/qtbase/src/corelib/kernel/qeventloop.cpp:182 #6 0x00007ffff59552b2 in QThread::exec (this=0x7ffff501cd80 >::instance()::holder>) at /home/michi/development/git/qt5/qtbase/src/corelib/thread/qthread.cpp:579 #7 0x00007ffff4e96bcc in QDBusConnectionManager::run (this=0x7ffff501cd80 >::instance()::holder>) at /home/michi/development/git/qt5/qtbase/src/dbus/qdbusconnectionmanager.cpp:144 #8 0x00007ffff5a6c47e in operator() (__closure=0x7ffff13fed38) at /home/michi/development/git/qt5/qtbase/src/corelib/thread/qthread_unix.cpp:326 #9 0x00007ffff5a6d498 in (anonymous namespace)::terminate_on_exception >(struct {...} &&) (t=...) at /home/michi/development/git/qt5/qtbase/src/corelib/thread/qthread_unix.cpp:262 #10 0x00007ffff5a6c514 in QThreadPrivate::start (arg=0x7ffff501cd80 >::instance()::holder>) at /home/michi/development/git/qt5/qtbase/src/corelib/thread/qthread_unix.cpp:285 #11 0x00007ffff50a63ec in start_thread (arg=) at ./nptl/pthread_create.c:444 #12 0x00007ffff5126a4c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:81 Thread 1 (Thread 0x7ffff608d8c0 (LWP 973800) "sharedmemory"): #0 __pthread_kill_implementation (threadid=, signo=signo@entry=6, no_tid=no_tid@entry=0) at ./nptl/pthread_kill.c:44 #1 0x00007ffff50a815f in __pthread_kill_internal (signo=6, threadid=) at ./nptl/pthread_kill.c:78 #2 0x00007ffff505a472 in __GI_raise (sig=sig@entry=6) at ../sysdeps/posix/raise.c:26 #3 0x00007ffff50444b2 in __GI_abort () at ./stdlib/abort.c:79 --Type for more, q to quit, c to continue without paging-- #4 0x00007ffff52a300d in ?? () from /lib/x86_64-linux-gnu/libstdc++.so.6 #5 0x00007ffff5b44172 in __gnu_debug::operator!= (__lhs=non-dereferenceable iterator for associative container, __rhs=non-dereferenceable iterator for associative container) at /usr/include/c++/13/debug/safe_iterator.h:492 #6 0x00007ffff5b3fdd0 in operator!= (lhs=..., rhs=...) at /home/michi/development/git/qt5/qtbase/include/QtCore/../../src/corelib/tools/qmap.h:517 #7 0x00007ffff5b37584 in QConfFileSettingsPrivate::children (this=0x55555560add0, prefix=..., spec=QSettingsPrivate::AllKeys) at /home/michi/development/git/qt5/qtbase/src/corelib/io/qsettings.cpp:1269 #8 0x00007ffff5b3b546 in QSettings::allKeys (this=0x7fffffff95c0) at /home/michi/development/git/qt5/qtbase/src/corelib/io/qsettings.cpp:3111 #9 0x00007ffff63557a8 in QIconTheme::QIconTheme (this=0x7fffffff9dd0, themeName=...) at /home/michi/development/git/qt5/qtbase/src/gui/image/qiconloader.cpp:368 #10 0x00007ffff635637f in QIconLoader::findIconHelper (this=0x7ffff704eb40 >::instance()::holder>, themeName=..., iconName=..., visited=...) at /home/michi/development/git/qt5/qtbase/src/gui/image/qiconloader.cpp:446 #11 0x00007ffff63577d1 in QIconLoader::loadIcon (this=0x7ffff704eb40 >::instance()::holder>, name=...) at /home/michi/development/git/qt5/qtbase/src/gui/image/qiconloader.cpp:593 #12 0x00007ffff6358278 in QIconLoaderEngine::QIconLoaderEngine (this=0x5555556aebb0, iconName=...) at /home/michi/development/git/qt5/qtbase/src/gui/image/qiconloader.cpp:718 #13 0x00007ffff647653b in QPlatformTheme::createIconEngine (this=0x7fffe4008ee0, iconName=...) at /home/michi/development/git/qt5/qtbase/src/gui/kernel/qplatformtheme.cpp:692 #14 0x00007ffff6357d49 in QIconLoader::iconEngine (this=0x7ffff704eb40 >::instance()::holder>, iconName=...) at /home/michi/development/git/qt5/qtbase/src/gui/image/qiconloader.cpp:632 #15 0x00007ffff63581e8 in QThemeIconEngine::proxiedEngine (this=0x5555556aeb30) at /home/michi/development/git/qt5/qtbase/src/gui/image/qiconloader.cpp:699 #16 0x00007ffff63536c1 in QProxyIconEngine::isNull (this=0x5555556aeb30) at /home/michi/development/git/qt5/qtbase/src/gui/image/qiconengine.cpp:371 #17 0x00007ffff6348759 in QIcon::isNull (this=0x7fffffffa678) at /home/michi/development/git/qt5/qtbase/src/gui/image/qicon.cpp:978 #18 0x00007ffff74a4bca in QCommonStyle::standardIcon (this=0x555555615bd0, standardIcon=QStyle::SP_DialogOkButton, option=0x0, widget=0x555555a96a80) at /home/michi/development/git/qt5/qtbase/src/widgets/styles/qcommonstyle.cpp:6120 #19 0x00007ffff758f522 in QFusionStyle::standardIcon (this=0x555555615bd0, standardIcon=QStyle::SP_DialogOkButton, option=0x0, widget=0x555555a96a80) at /home/michi/development/git/qt5/qtbase/src/widgets/styles/qfusionstyle.cpp:3679 #20 0x00007ffff76cf3b8 in QDialogButtonBoxPrivate::createButton (this=0x555555ab4400, sbutton=QDialogButtonBox::Ok, layoutRule=QDialogButtonBoxPrivate::LayoutRule::SkipLayout) at /home/michi/development/git/qt5/qtbase/src/widgets/widgets/qdialogbuttonbox.cpp:370 #21 0x00007ffff76cf6b0 in QDialogButtonBoxPrivate::createStandardButtons (this=0x555555ab4400, buttons=...) at /home/michi/development/git/qt5/qtbase/src/widgets/widgets/qdialogbuttonbox.cpp:417 #22 0x00007ffff76d0236 in QDialogButtonBox::setStandardButtons (this=0x555555a96a80, buttons=...) at /home/michi/development/git/qt5/qtbase/src/widgets/widgets/qdialogbuttonbox.cpp:820 #23 0x00007ffff77aaf54 in Ui_QFileDialog::setupUi (this=0x555555a8b320, QFileDialog=0x7fffffffb190) at /home/michi/development/git/qt5/qtbase/src/widgets/Widgets_autogen/include/ui_qfiledialog.h:206 #24 0x00007ffff779e591 in QFileDialogPrivate::createWidgets (this=0x555555716cb0) at /home/michi/development/git/qt5/qtbase/src/widgets/dialogs/qfiledialog.cpp:2983 #25 0x00007ffff779df6b in QFileDialogPrivate::init (this=0x555555716cb0, args=...) at /home/michi/development/git/qt5/qtbase/src/widgets/dialogs/qfiledialog.cpp:2914 #26 0x00007ffff7793c7f in QFileDialog::QFileDialog (this=0x7fffffffb190, args=...) at /home/michi/development/git/qt5/qtbase/src/widgets/dialogs/qfiledialog.cpp:357 #27 0x00007ffff779a81e in QFileDialog::getOpenFileUrl (parent=0x0, caption=..., dir=..., filter=..., selectedFilter=0x0, options=..., supportedSchemes=...) at /home/michi/development/git/qt5/qtbase/src/widgets/dialogs/qfiledialog.cpp:2144 #28 0x00007ffff779a6bf in QFileDialog::getOpenFileName (parent=0x0, caption=..., dir=..., filter=..., selectedFilter=0x0, options=...) at /home/michi/development/git/qt5/qtbase/src/widgets/dialogs/qfiledialog.cpp:2095 #29 0x0000555555558ced in Dialog::loadFromFile (this=0x7fffffffd770) at /home/michi/development/git/qt5/qtbase/examples/corelib/ipc/sharedmemory/dialog.cpp:80 #30 0x000055555555ac7e in QtPrivate::FunctorCall, QtPrivate::List<>, void, void (Dialog::*)()>::call(void (Dialog::*)(), Dialog*, void**) (f=(void (Dialog::*)(Dialog * const)) 0x555555558bde , o=0x7fffffffd770, arg=0x7fffffffb7f0) at /home/michi/development/git/qt5/qtbase/src/corelib/kernel/qobjectdefs_impl.h:145 #31 0x000055555555ac04 in QtPrivate::FunctionPointer::call, void>(void (Dialog::*)(), Dialog*, void**) (f=(void (Dialog::*)(Dialog * const)) 0x555555558bde , o=0x7fffffffd770, arg=0x7fffffffb7f0) at /home/michi/development/git/qt5/qtbase/src/corelib/kernel/qobjectdefs_impl.h:182 #32 0x000055555555ab45 in QtPrivate::QCallableObject, void>::impl(int, QtPrivate::QSlotObjectBase*, QObject*, void**, bool*) (which=1, this_=0x555555614f50, r=0x7fffffffd770, a=0x7fffffffb7f0, ret=0x0) at /home/michi/development/git/qt5/qtbase/src/corelib/kernel/qobjectdefs_impl.h:553 #33 0x00007ffff57b65cf in QtPrivate::QSlotObjectBase::call (this=0x555555614f50, r=0x7fffffffd770, a=0x7fffffffb7f0) at /home/michi/development/git/qt5/qtbase/include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:469 #34 0x00007ffff5854c04 in doActivate (sender=0x555555618cf0, signal_index=9, argv=0x7fffffffb7f0) at /home/michi/development/git/qt5/qtbase/src/corelib/kernel/qobject.cpp:4039 #35 0x00007ffff584a6f9 in QMetaObject::activate (sender=0x555555618cf0, m=0x7ffff7e872a0 , local_signal_index=2, argv=0x7fffffffb7f0) at /home/michi/development/git/qt5/qtbase/src/corelib/kernel/qobject.cpp:4099 #36 0x00007ffff75959ee in QAbstractButton::clicked (this=0x555555618cf0, _t1=false) at /home/michi/development/git/qt5/qtbase/src/widgets/Widgets_autogen/include/moc_qabstractbutton.cpp:325 #37 0x00007ffff7593180 in QAbstractButtonPrivate::emitClicked (this=0x555555618d20) at /home/michi/development/git/qt5/qtbase/src/widgets/widgets/qabstractbutton.cpp:381 #38 0x00007ffff7593112 in QAbstractButtonPrivate::click (this=0x555555618d20) at /home/michi/development/git/qt5/qtbase/src/widgets/widgets/qabstractbutton.cpp:374 #39 0x00007ffff759464f in QAbstractButton::mouseReleaseEvent (this=0x555555618cf0, e=0x7fffffffc4e0) at /home/michi/development/git/qt5/qtbase/src/widgets/widgets/qabstractbutton.cpp:976 #40 0x00007ffff7442101 in QWidget::event (this=0x555555618cf0, event=0x7fffffffc4e0) at /home/michi/development/git/qt5/qtbase/src/widgets/kernel/qwidget.cpp:8977 #41 0x00007ffff7594454 in QAbstractButton::event (this=0x555555618cf0, e=0x7fffffffc4e0) at /home/michi/development/git/qt5/qtbase/src/widgets/widgets/qabstractbutton.cpp:933 #42 0x00007ffff76ca416 in QPushButton::event (this=0x555555618cf0, e=0x7fffffffc4e0) at /home/michi/development/git/qt5/qtbase/src/widgets/widgets/qpushbutton.cpp:684 #43 0x00007ffff73a6a12 in QApplicationPrivate::notify_helper (this=0x555555587220, receiver=0x555555618cf0, e=0x7fffffffc4e0) at /home/michi/development/git/qt5/qtbase/src/widgets/kernel/qapplication.cpp:3296 #44 0x00007ffff73a4893 in QApplication::notify (this=0x7fffffffd7d0, receiver=0x555555618cf0, e=0x7fffffffc4e0) at /home/michi/development/git/qt5/qtbase/src/widgets/kernel/qapplication.cpp:2782 #45 0x00007ffff57afa16 in QCoreApplication::notifyInternal2 (receiver=0x555555618cf0, event=0x7fffffffc4e0) at /home/michi/development/git/qt5/qtbase/src/corelib/kernel/qcoreapplication.cpp:1134 #46 0x00007ffff57b0595 in QCoreApplication::sendSpontaneousEvent (receiver=0x555555618cf0, event=0x7fffffffc4e0) at /home/michi/development/git/qt5/qtbase/src/corelib/kernel/qcoreapplication.cpp:1589 --Type for more, q to quit, c to continue without paging-- #47 0x00007ffff73a34fc in QApplicationPrivate::sendMouseEvent (receiver=0x555555618cf0, event=0x7fffffffc4e0, alienWidget=0x555555618cf0, nativeWidget=0x7fffffffd770, buttonDown=0x7ffff7ec3370 , lastMouseReceiver=..., spontaneous=true, onlyDispatchEnterLeave=false) at /home/michi/development/git/qt5/qtbase/src/widgets/kernel/qapplication.cpp:2366 #48 0x00007ffff7476eb4 in QWidgetWindow::handleMouseEvent (this=0x55555561c670, event=0x7fffffffd1e0) at /home/michi/development/git/qt5/qtbase/src/widgets/kernel/qwidgetwindow.cpp:627 #49 0x00007ffff74753e5 in QWidgetWindow::event (this=0x55555561c670, event=0x7fffffffd1e0) at /home/michi/development/git/qt5/qtbase/src/widgets/kernel/qwidgetwindow.cpp:241 #50 0x00007ffff73a6a12 in QApplicationPrivate::notify_helper (this=0x555555587220, receiver=0x55555561c670, e=0x7fffffffd1e0) at /home/michi/development/git/qt5/qtbase/src/widgets/kernel/qapplication.cpp:3296 #51 0x00007ffff73a6823 in QApplication::notify (this=0x7fffffffd7d0, receiver=0x55555561c670, e=0x7fffffffd1e0) at /home/michi/development/git/qt5/qtbase/src/widgets/kernel/qapplication.cpp:3247 #52 0x00007ffff57afa16 in QCoreApplication::notifyInternal2 (receiver=0x55555561c670, event=0x7fffffffd1e0) at /home/michi/development/git/qt5/qtbase/src/corelib/kernel/qcoreapplication.cpp:1134 #53 0x00007ffff57b0595 in QCoreApplication::sendSpontaneousEvent (receiver=0x55555561c670, event=0x7fffffffd1e0) at /home/michi/development/git/qt5/qtbase/src/corelib/kernel/qcoreapplication.cpp:1589 #54 0x00007ffff6402357 in QGuiApplicationPrivate::processMouseEvent (e=0x5555556a2f50) at /home/michi/development/git/qt5/qtbase/src/gui/kernel/qguiapplication.cpp:2320 #55 0x00007ffff6401759 in QGuiApplicationPrivate::processWindowSystemEvent (e=0x5555556a2f50) at /home/michi/development/git/qt5/qtbase/src/gui/kernel/qguiapplication.cpp:2066 #56 0x00007ffff64b8931 in QWindowSystemInterface::sendWindowSystemEvents (flags=...) at /home/michi/development/git/qt5/qtbase/src/gui/kernel/qwindowsysteminterface.cpp:1109 #57 0x00007ffff1b01d5f in xcbSourceDispatch (source=0x555555604d10) at /home/michi/development/git/qt5/qtbase/src/plugins/platforms/xcb/qxcbeventdispatcher.cpp:57 #58 0x00007ffff55111f4 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #59 0x00007ffff5514317 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #60 0x00007ffff5514930 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #61 0x00007ffff5c2d27f in QEventDispatcherGlib::processEvents (this=0x55555560b5e0, flags=...) at /home/michi/development/git/qt5/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:394 #62 0x00007ffff1b01f94 in QXcbGlibEventDispatcher::processEvents (this=0x55555560b5e0, flags=...) at /home/michi/development/git/qt5/qtbase/src/plugins/platforms/xcb/qxcbeventdispatcher.cpp:96 #63 0x00007ffff57c5389 in QEventLoop::processEvents (this=0x7fffffffd6c0, flags=...) at /home/michi/development/git/qt5/qtbase/src/corelib/kernel/qeventloop.cpp:100 #64 0x00007ffff57c56b9 in QEventLoop::exec (this=0x7fffffffd6c0, flags=...) at /home/michi/development/git/qt5/qtbase/src/corelib/kernel/qeventloop.cpp:182 #65 0x00007ffff57b02f5 in QCoreApplication::exec () at /home/michi/development/git/qt5/qtbase/src/corelib/kernel/qcoreapplication.cpp:1478 #66 0x00007ffff640105a in QGuiApplication::exec () at /home/michi/development/git/qt5/qtbase/src/gui/kernel/qguiapplication.cpp:1926 #67 0x00007ffff73a3d15 in QApplication::exec () at /home/michi/development/git/qt5/qtbase/src/widgets/kernel/qapplication.cpp:2574 #68 0x000055555555ada0 in main (argc=1, argv=0x7fffffffd908) at /home/michi/development/git/qt5/qtbase/examples/corelib/ipc/sharedmemory/main.cpp:14 (gdb)