Bug#863419: evince: selecting text and trying to drag it causes crash

[Sotiris Kouvopoulos]

This is how I finally ran gdb:
GDK_SYNCHRONIZE=1 gdb -batch -ex "set breakpoint pending on" -ex
"break gdk_x_error" -ex "run far.pdf" -ex "bt full" evince

Output:
Function "gdk_x_error" not defined.
Breakpoint 1 (gdk_x_error) pending.
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7fffee0aa700 (LWP 1895)]
[New Thread 0x7fffed8a9700 (LWP 1896)]
[New Thread 0x7fffed062700 (LWP 1900)]
[New Thread 0x7fffdffff700 (LWP 1901)]
[New Thread 0x7fffdf77e700 (LWP 1902)]
[New Thread 0x7fffdcee7700 (LWP 1903)]
[Thread 0x7fffed8a9700 (LWP 1896) exited]

Breakpoint 1, gdk_x_error (xdisplay=0x6a1340, error=0x7fffffffdb80) at
/tmp/buildd/gtk+3.0-3.14.5/./gdk/x11/gdkmain-x11.c:268
268    /tmp/buildd/gtk+3.0-3.14.5/./gdk/x11/gdkmain-x11.c: No such
file or directory.
#0  gdk_x_error (xdisplay=0x6a1340, error=0x7fffffffdb80) at
/tmp/buildd/gtk+3.0-3.14.5/./gdk/x11/gdkmain-x11.c:268
No locals.
#1  0x00007ffff3b7045d in _XError () from /usr/lib/x86_64-linux-gnu/libX11.so.6
No symbol table info available.
#2  0x00007ffff3b6d3c7 in ?? () from /usr/lib/x86_64-linux-gnu/libX11.so.6
No symbol table info available.
#3  0x00007ffff3b6d485 in ?? () from /usr/lib/x86_64-linux-gnu/libX11.so.6
No symbol table info available.
#4  0x00007ffff3b6e430 in _XReply () from /usr/lib/x86_64-linux-gnu/libX11.so.6
No symbol table info available.
#5  0x00007ffff3b69ced in XSync () from /usr/lib/x86_64-linux-gnu/libX11.so.6
No symbol table info available.
#6  0x00007ffff3b69d8b in ?? () from /usr/lib/x86_64-linux-gnu/libX11.so.6
No symbol table info available.
#7  0x00007ffff6ac04b3 in gdk_window_cache_new (screen=<optimized
out>) at /tmp/buildd/gtk+3.0-3.14.5/./gdk/x11/gdkdnd-x11.c:567
        root_window = 0x6c0000
        nchildren = 84
        i = 1050
        cow = 8
        xwa = {x = 0, y = 0, width = 2960, height = 1050, border_width
= 0, depth = 24, visual = 0x6a32d0, root = 855, class = 1, bit_gravity
= 0, win_gravity = 1, backing_store = 0, backing_planes = 4294967295,
backing_pixel = 0, save_under = 0, colormap = 32, map_installed = 1,
map_state = 2, all_event_masks = 16416783, your_event_mask = 131072,
do_not_propagate_mask = 0, override_redirect = 0, screen = 0x67e2c0}
        children = 0xd3bb10
#8  gdk_window_cache_get (screen=<optimized out>) at
/tmp/buildd/gtk+3.0-3.14.5/./gdk/x11/gdkdnd-x11.c:633
        list = 0x0
#9  drag_context_find_window_cache (screen=<optimized out>,
context_x11=<optimized out>) at
/tmp/buildd/gtk+3.0-3.14.5/./gdk/x11/gdkdnd-x11.c:2013
        cache = 0xd31760
#10 gdk_x11_drag_context_find_window (context=0x7fffd0008390,
drag_window=0x0, screen=0x6b80d0, x_root=0, y_root=14291872,
protocol=0x0) at
/tmp/buildd/gtk+3.0-3.14.5/./gdk/x11/gdkdnd-x11.c:2036
        dest_window = 0xd31760
#11 0x00007ffff6a9a516 in gdk_drag_find_window_for_screen
(context=0x7fffd0008390, drag_window=0x0, screen=0x6b80d0, x_root=708,
y_root=<optimized out>, dest_window=0x7fffffffdf70,
protocol=0x7fffffffdf64) at
/tmp/buildd/gtk+3.0-3.14.5/./gdk/gdkdnd.c:276
        __FUNCTION__ = "gdk_drag_find_window_for_screen"
#12 0x00007ffff7072908 in gtk_drag_update_idle (data=0x708840) at
/tmp/buildd/gtk+3.0-3.14.5/./gtk/gtkdnd.c:4064
        dest_window = 0x6e0c90
        protocol = GDK_DRAG_PROTO_NONE
        selection = <optimized out>
        action = GDK_ACTION_COPY
        possible_actions = GDK_ACTION_COPY
        time = 959973
#13 0x00007ffff6a91e78 in gdk_threads_dispatch (data=0x808da0) at
/tmp/buildd/gtk+3.0-3.14.5/./gdk/gdk.c:654
        dispatch = 0x808da0
        ret = 0
#14 0x00007ffff4dc2b6d in g_main_context_dispatch () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#15 0x00007ffff4dc2f48 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#16 0x00007ffff4dc2ffc in g_main_context_iteration () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#17 0x00007ffff538020c in g_application_run () from
/usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
No symbol table info available.
#18 0x000000000041c512 in main (argc=1, argv=0x7fffffffe2a8) at
/build/evince-3.14.1/./shell/main.c:316
        context = 0x0
        error = 0x0
        status = 0