$ qtcreator QTextBrowser: No document for about:blank /home/ezust/bin/qtcreator: line 5: 11708 Segmentation fault (core dumped) ASAN_SYMBOLIZER_PATH=/usr/bin/llvm-symbolizer-3.4 ASAN_OPTIONS=symbolize=0 ./qtcreator [ezust@cerberus] /home/ezust/Trolltech/build-qtcreator-Qt5_3Alpha-Debug/bin> gdb qtcreator core GNU gdb (GDB) 7.6.1-ubuntu Copyright (C) 2013 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". For bug reporting instructions, please see: ... Reading symbols from /home/ezust/Trolltech/build-qtcreator-Qt5_3Alpha-Debug/bin/qtcreator...done. [New LWP 26749] [New LWP 26750] [New LWP 26754] [New LWP 26757] [New LWP 26919] warning: Can't read pathname for load map: Input/output error. [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". Core was generated by `./qtcreator'. Program terminated with signal 11, Segmentation fault. #0 0x0000000000000002 in ?? () (gdb) bt #0 0x0000000000000002 in ?? () #1 0x00007fbd5ed25a9b in QCoreApplicationPrivate::checkReceiverThread (this=0x871300, receiver=0x278b540) at kernel/qcoreapplication.cpp:514 #2 0x00007fbd60355e9f in QApplication::notify (this=0x7fffdd39d148, receiver=0x278b540, e=0x7fffdd39c350) at kernel/qapplication.cpp:2781 #3 0x00007fbd5ed267b0 in QCoreApplication::notifyInternal (this=0x7fffdd39d148, receiver=0x278b540, event=0x7fffdd39c350) at kernel/qcoreapplication.cpp:937 #4 0x00007fbd5ed2a43d in QCoreApplication::sendEvent (receiver=0x278b540, event=0x7fffdd39c350) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:237 #5 0x00007fbd5ed9c982 in QTimerInfoList::activateTimers (this=0x8c4470) at kernel/qtimerinfo_unix.cpp:643 #6 0x00007fbd5ed9dc96 in timerSourceDispatch (source=0x8c4410) at kernel/qeventdispatcher_glib.cpp:185 #7 0x00007fbd5c5693b6 in g_main_dispatch (context=0x7fbd50001740) at /build/buildd/glib2.0-2.38.1/./glib/gmain.c:3065 #8 g_main_context_dispatch (context=context@entry=0x7fbd50001740) at /build/buildd/glib2.0-2.38.1/./glib/gmain.c:3641 #9 0x00007fbd5c569708 in g_main_context_iterate (context=context@entry=0x7fbd50001740, block=block@entry=1, dispatch=dispatch@entry=1, self=) at /build/buildd/glib2.0-2.38.1/./glib/gmain.c:3712 #10 0x00007fbd5c5697ac in g_main_context_iteration (context=0x7fbd50001740, may_block=1) at /build/buildd/glib2.0-2.38.1/./glib/gmain.c:3773 #11 0x00007fbd5ed9e631 in QEventDispatcherGlib::processEvents (this=0x8c28a0, flags=...) at kernel/qeventdispatcher_glib.cpp:426 #12 0x00007fbd584187b8 in QPAEventDispatcherGlib::processEvents (this=0x8c28a0, flags=...) at eventdispatchers/qeventdispatcher_glib.cpp:123 #13 0x00007fbd5ed23478 in QEventLoop::processEvents (this=0x7fffdd39c620, flags=...) at kernel/qeventloop.cpp:136 #14 0x00007fbd5ed23743 in QEventLoop::exec (this=0x7fffdd39c620, flags=...) at kernel/qeventloop.cpp:212 #15 0x00007fbd5ed26e96 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1190 #16 0x00007fbd5f3181ec in QGuiApplication::exec () at kernel/qguiapplication.cpp:1433 #17 0x00007fbd60355c79 in QApplication::exec () at kernel/qapplication.cpp:2735 #18 0x000000000040f2fe in main (argc=1, argv=0x7fffdd39d2a8) at /home/ezust/Trolltech/qt-creator/src/app/main.cpp:533 (gdb) info threads Id Target Id Frame 5 Thread 0x7fbd41ffa700 (LWP 26919) pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 4 Thread 0x7fbd42ffc700 (LWP 26757) 0x00007fbd5da8df7d in poll () at ../sysdeps/unix/syscall-template.S:81 3 Thread 0x7fbd437fd700 (LWP 26754) 0x00007fbd5da92de3 in select () at ../sysdeps/unix/syscall-template.S:81 2 Thread 0x7fbd5571e700 (LWP 26750) 0x00007fbd5da8df7d in poll () at ../sysdeps/unix/syscall-template.S:81 * 1 Thread 0x7fbd615a4780 (LWP 26749) 0x0000000000000002 in ?? () (gdb)