.
Thread 1 (Thread 0x7f54cda85e40 (LWP 13268)):
#0  __pthread_kill_internal (signo=6, threadid=<optimized out>) at pthread_kill.c:45
        pid = 13268
        tid = 13268
        pd = <optimized out>
        val = 0
        tid = <optimized out>
        pd = <optimized out>
        val = <optimized out>
        sc_ret = <optimized out>
        resultvar = <optimized out>
        __x = <optimized out>
        pid = <optimized out>
        resultvar = <optimized out>
        __arg3 = <optimized out>
        __arg2 = <optimized out>
        __arg1 = <optimized out>
        _a3 = <optimized out>
        _a2 = <optimized out>
        _a1 = <optimized out>
#1  __GI___pthread_kill (threadid=<optimized out>, signo=signo@entry=6) at pthread_kill.c:62
No locals.
#2  0x00007f54d1801466 in __GI_raise (sig=sig@entry=6) at ../sysdeps/posix/raise.c:26
        ret = <optimized out>
#3  0x00007f54d17e77b7 in __GI_abort () at abort.c:79
        save_stage = 1
        act = {__sigaction_handler = {sa_handler = 0x0, sa_sigaction = 0x0}, sa_mask = {__val = {0 <repeats 16 times>}}, sa_flags = 0, sa_restorer = 0x7ffebd29f0c8}
        sigs = {__val = {32, 0 <repeats 15 times>}}
#4  0x00007f54d1d72ba3 in QMessageLogger::fatal(char const*, ...) const () from /lib/x86_64-linux-gnu/libQt5Core.so.5
No symbol table info available.
#5  0x00007f54d24c6633 in QGuiApplicationPrivate::createPlatformIntegration() () from /lib/x86_64-linux-gnu/libQt5Gui.so.5
No symbol table info available.
#6  0x00007f54d24c6b28 in QGuiApplicationPrivate::createEventDispatcher() () from /lib/x86_64-linux-gnu/libQt5Gui.so.5
No symbol table info available.
#7  0x00007f54d1fa1e97 in QCoreApplicationPrivate::init() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
No symbol table info available.
#8  0x00007f54d24c9aa6 in QGuiApplicationPrivate::init() () from /lib/x86_64-linux-gnu/libQt5Gui.so.5
No symbol table info available.
#9  0x00007f54d2d23c6d in QApplicationPrivate::init() () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
No symbol table info available.
#10 0x000056494d0e1870 in ?? ()
No symbol table info available.
#11 0x00007f54d17e8fd0 in __libc_start_call_main (main=main@entry=0x56494d0e16f0, argc=argc@entry=1, argv=argv@entry=0x7ffebd29f958) at ../sysdeps/nptl/libc_start_call_main.h:58
        self = <optimized out>
        result = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, -1345561695393040452, 140732072065368, 94872825370352, 0, 140002317663296, 1346260280228427708, 1439524850471516092}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x56494d279008, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 1294438408}}}
        not_first_call = <optimized out>
#12 0x00007f54d17e907d in __libc_start_main_impl (main=0x56494d0e16f0, argc=1, argv=0x7ffebd29f958, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffebd29f948) at ../csu/libc-start.c:409
No locals.
#13 0x000056494d0ea4d5 in _start ()
No symbol table info available.