.
Thread 4 (Thread 0x7fd50d8b7700 (LWP 10724)):
#0  0x00007fd51db0f9e3 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
        resultvar = <optimized out>
        oldtype = 0
        result = <optimized out>
#1  0x00007fd50c41bb9f in ?? ()
No symbol table info available.
#2  0x0000000000d0bdc0 in ?? ()
No symbol table info available.
#3  0xffffffffffffffff in ?? ()
No symbol table info available.
#4  0x0000000000000001 in ?? ()
No symbol table info available.
#5  0x00007fd50d8b79c0 in ?? ()
No symbol table info available.
#6  0x00000000009518d0 in ?? ()
No symbol table info available.
#7  0x0000000000d0bdc0 in ?? ()
No symbol table info available.
#8  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 3 (Thread 0x7fd514d15700 (LWP 10079)):
#0  0x00007fd51db0f9e3 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
        resultvar = <optimized out>
        oldtype = 0
        result = <optimized out>
#1  0x00007fd51e9aef94 in g_get_worker_context () at /build/buildd/glib2.0-2.33.12/./glib/gmain.c:5054
        prev_mask = {__val = {8799264, 18446744071562067967, 140736714554320, 8799264, 1, 140736714554320, 140553154025920, 0, 3, 140553318232244, 72340172838076673, 8799264, 0, 140553154052957, 8788992, 140553318374901}}
        all = {__val = {0, 140553305906842, 0, 140553154025216, 0 <repeats 12 times>}}
        initialised = 0
#2  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 2 (Thread 0x7fd51778f700 (LWP 10074)):
#0  0x00007fd51db0f9e3 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
        resultvar = <optimized out>
        oldtype = 0
        result = <optimized out>
#1  0x00007fd51e9aef94 in g_get_worker_context () at /build/buildd/glib2.0-2.33.12/./glib/gmain.c:5054
        prev_mask = {__val = {7743456, 18446744071562067967, 140736714553520, 7743344, 0, 140736714553520, 140553198565824, 0, 3, 140553318233074, 72340172838076673, 140553364290008, 7743408, 140553324340790, 7989488, 140553318374901}}
        all = {__val = {0, 140553305906842, 0, 140553198565120, 0 <repeats 12 times>}}
        initialised = 0
#2  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 1 (Thread 0x7fd521586980 (LWP 10071)):
#0  0x00007fd52074ee05 in gtk_widget_reparent_fixup_child (client_data=0x77a820, widget=0x79a270) at /build/buildd/gtk+3.0-3.5.16/./gtk/gtkwidget.c:6427
No locals.
#1  gtk_widget_reparent_fixup_child (widget=0x79a270, client_data=0x77a820) at /build/buildd/gtk+3.0-3.5.16/./gtk/gtkwidget.c:6411
        priv = <optimized out>
#2  0x00007fd520751f8c in gtk_widget_is_composited (widget=<optimized out>) at /build/buildd/gtk+3.0-3.5.16/./gtk/gtkwidget.c:8403
        screen = 0xaaaaaaaaaaaaaaaa
        __PRETTY_FUNCTION__ = "gtk_widget_is_composited"
#3  0x00007fd51ec6b6a0 in g_closure_add_finalize_notifier (closure=0x7fd520751f8c, notify_data=0xf, notify_func=0x77a7e0) at /build/buildd/glib2.0-2.33.12/./gobject/gclosure.c:432
        __s = 16
        __p = 0x79a270
        i = <optimized out>
        __PRETTY_FUNCTION__ = "g_closure_add_finalize_notifier"
#4  0x00007fffd1e0aad8 in ?? ()
No symbol table info available.
#5  0x00000000000000d0 in ?? ()
No symbol table info available.
#6  0xffff000040000007 in ?? ()
No symbol table info available.
#7  0x00007fd51daac0de in __GI___libc_realloc (oldmem=0x0, bytes=7841760) at malloc.c:3060
        ar_ptr = 0x0
        nb = 0
        newp = <optimized out>
        hook = <optimized out>
        oldp = 0x737700
        oldsize = 0
        __func__ = "__libc_realloc"
#8  0x0000000000737730 in ?? ()
No symbol table info available.
#9  0x00007fffd1e0aac0 in ?? ()
No symbol table info available.
#10 0x0000000000000000 in ?? ()
No symbol table info available.