GNU gdb (Ubuntu 7.7.1-0ubuntu5~14.04.2) 7.7.1 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-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"... untitled: Datei oder Verzeichnis nicht gefunden. Attaching to process 9806 Reading symbols from /home/michael/build-untitled-Desktop_Qt_5_5_0_GCC_64bit-Debug/untitled...done. Reading symbols from /opt/Qt/5.5/gcc_64/lib/libQt5Widgets.so.5...(no debugging symbols found)...done. 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Loaded symbols for /usr/lib/x86_64-linux-gnu/libelf.so.1 Reading symbols from /usr/lib/x86_64-linux-gnu/libdrm_radeon.so.1...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libdrm_radeon.so.1 Reading symbols from /usr/lib/x86_64-linux-gnu/libLLVM-3.4.so.1...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libLLVM-3.4.so.1 Reading symbols from /lib/x86_64-linux-gnu/libtinfo.so.5...(no debugging symbols found)...done. Loaded symbols for /lib/x86_64-linux-gnu/libtinfo.so.5 Reading symbols from /usr/lib/x86_64-linux-gnu/libtxc_dxtn.so...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libtxc_dxtn.so Reading symbols from /lib/x86_64-linux-gnu/libnss_compat.so.2...Reading symbols from /usr/lib/debug//lib/x86_64-linux-gnu/libnss_compat-2.19.so...done. done. Loaded symbols for /lib/x86_64-linux-gnu/libnss_compat.so.2 Reading symbols from /lib/x86_64-linux-gnu/libnsl.so.1...Reading symbols from /usr/lib/debug//lib/x86_64-linux-gnu/libnsl-2.19.so...done. done. Loaded symbols for /lib/x86_64-linux-gnu/libnsl.so.1 Reading symbols from /lib/x86_64-linux-gnu/libnss_nis.so.2...Reading symbols from /usr/lib/debug//lib/x86_64-linux-gnu/libnss_nis-2.19.so...done. done. Loaded symbols for /lib/x86_64-linux-gnu/libnss_nis.so.2 Reading symbols from /lib/x86_64-linux-gnu/libnss_files.so.2...Reading symbols from /usr/lib/debug//lib/x86_64-linux-gnu/libnss_files-2.19.so...done. done. Loaded symbols for /lib/x86_64-linux-gnu/libnss_files.so.2 0x00007f8bf4ade12d in poll () at ../sysdeps/unix/syscall-template.S:81 81 ../sysdeps/unix/syscall-template.S: Datei oder Verzeichnis nicht gefunden. Traceback (most recent call last): File "/usr/share/gdb/auto-load/usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.19-gdb.py", line 63, in from libstdcxx.v6.printers import register_libstdcxx_printers ImportError: No module named 'libstdcxx' (gdb) bt full #0 0x00007f8bf4ade12d in poll () at ../sysdeps/unix/syscall-template.S:81 No locals. #1 0x00007f8bf36a5fe4 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #2 0x00007f8bf36a60ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #3 0x00007f8bf55b6ae7 in QEventDispatcherGlib::processEvents(QFlags) () from /opt/Qt/5.5/gcc_64/lib/libQt5Core.so.5 No symbol table info available. #4 0x00007f8bf555f252 in QEventLoop::exec(QFlags) () from /opt/Qt/5.5/gcc_64/lib/libQt5Core.so.5 No symbol table info available. #5 0x00007f8bf5566d3d in QCoreApplication::exec() () from /opt/Qt/5.5/gcc_64/lib/libQt5Core.so.5 No symbol table info available. #6 0x0000000000403208 in main (argc=1, argv=0x7ffc58974f58) at ../gui/main.cpp:10 a = w = { = {}, static staticMetaObject = {d = {superdata = 0x7f8bf6285600 , stringdata = 0x404060 , data = 0x4040c0 , static_metacall = 0x403d36 , relatedMetaObjects = 0x0, extradata = 0x0}}, ui = 0x1e2d970} (gdb) thread apply all baclktrace Thread 3 (Thread 0x7f8bebd45700 (LWP 9807)): #0 0x00007f8bf4ade12d in poll () at ../sysdeps/unix/syscall-template.S:81 #1 0x00007f8bf0104b72 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1 #2 0x00007f8bf010664f in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1 #3 0x00007f8bed59e629 in ?? () from /opt/Qt/5.5/gcc_64/plugins/platforms/../../lib/libQt5XcbQpa.so.5 #4 0x00007f8bf53737df in ?? () from /opt/Qt/5.5/gcc_64/lib/libQt5Core.so.5 #5 0x00007f8bf3fc8182 in start_thread (arg=0x7f8bebd45700) at pthread_create.c:312 #6 0x00007f8bf4aeb47d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111 Thread 2 (Thread 0x7f8bdfabf700 (LWP 9808)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x00007f8be232a4c3 in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so #2 0x00007f8be2329e07 in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so #3 0x00007f8bf3fc8182 in start_thread (arg=0x7f8bdfabf700) at pthread_create.c:312 #4 0x00007f8bf4aeb47d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111 Thread 1 (Thread 0x7f8bf648b780 (LWP 9806)): #0 0x00007f8bf4ade12d in poll () at ../sysdeps/unix/syscall-template.S:81 #1 0x00007f8bf36a5fe4 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007f8bf36a60ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007f8bf55b6ae7 in QEventDispatcherGlib::processEvents(QFlags) () from /opt/Qt/5.5/gcc_64/lib/libQt5Core.so.5 #4 0x00007f8bf555f252 in QEventLoop::exec(QFlags) () from /opt/Qt/5.5/gcc_64/lib/libQt5Core.so.5 #5 0x00007f8bf5566d3d in QCoreApplication::exec() () from /opt/Qt/5.5/gcc_64/lib/libQt5Core.so.5 #6 0x0000000000403208 in main (argc=1, argv=0x7ffc58974f58) at ../gui/main.cpp:10 (gdb) quit A debugging session is active. Inferior 1 [process 9806] will be detached. Quit anyway? (y or n) Detaching from program: /home/michael/build-untitled-Desktop_Qt_5_5_0_GCC_64bit-Debug/untitled, process 9806