Same setup as before. (gdb) break x_error_quitter (gdb) run -Q -nw -xrm "emacs.synchronous: true" -f server-start Breakpoint 3, x_error_quitter (display=0xfd7720, event=0x7fffffff9ac0) at xterm.c:7732 7732 { (gdb) bt #0 x_error_quitter (display=0xfd7720, event=0x7fffffff9ac0) at xterm.c:7732 #1 0x0000000000542209 in x_error_handler (display=0xfd7720, event=0x7fffffff9ac0) at xterm.c:7717 #2 0x00007ffff5fbb54b in _XError (dpy=dpy@entry=0xfd7720, rep=rep@entry=0xf97e30) at ../../src/XlibInt.c:1463 #3 0x00007ffff5fb85e7 in handle_error (dpy=0xfd7720, err=0xf97e30, in_XReply=) at ../../src/xcb_io.c:213 #4 0x00007ffff5fb8695 in handle_response (dpy=dpy@entry=0xfd7720, response=0xf97e30, in_XReply=in_XReply@entry=1) at ../../src/xcb_io.c:325 #5 0x00007ffff5fb9578 in _XReply (dpy=dpy@entry=0xfd7720, rep=rep@entry=0x7fffffff9c80, extra=extra@entry=0, discard=discard@entry=0) at ../../src/xcb_io.c:627 #6 0x00007ffff5faf4cf in XQueryColor (dpy=0xfd7720, cmap=32, def=0x7fffffff9ce0) at ../../src/QuColor.c:49 #7 0x00007ffff6b8c50c in Xaw3dComputeTopShadowRGB () from /usr/lib/x86_64-linux-gnu/libXaw3d.so.6 #8 0x00007ffff6b8c600 in ?? () from /usr/lib/x86_64-linux-gnu/libXaw3d.so.6 #9 0x00007ffff6b8ca6a in ?? () from /usr/lib/x86_64-linux-gnu/libXaw3d.so.6 #10 0x00007ffff66f1afc in CallInitialize (class=0x7ffff6dae960 , req_widget=req_widget@entry=0x7fffffff9ef0, new_widget=new_widget@entry=0x1655210, args=args@entry=0x7fffffffa3c0, num_args=3) at ../../src/Create.c:226 #11 0x00007ffff66f1ac6 in CallInitialize (class=0x7ffff6dac1c0 , req_widget=req_widget@entry=0x7fffffff9ef0, new_widget=new_widget@entry=0x1655210, args=args@entry=0x7fffffffa3c0, num_args=num_args@entry=3) at ../../src/Create.c:221 #12 0x00007ffff66f2427 in xtCreate (name=name@entry=0x703028 "verticalScrollBar", class=class@entry=0x0, widget_class=widget_class@entry=0x7ffff6dac1c0 , parent=parent@entry=0xff6940, default_screen=0xfb5cb0, args=args@entry=0x7fffffffa3c0, num_args=num_args@entry=3, typed_args=typed_args@entry=0x0, num_typed_args=num_typed_args@entry=0, parent_constraint_class=0x0, post_proc=post_proc@entry=0x7ffff66f1b40 ) at ../../src/Create.c:416 #13 0x00007ffff66f2840 in _XtCreateWidget (name=name@entry=0x703028 "verticalScrollBar", widget_class=widget_class@entry=0x7ffff6dac1c0 , parent=parent@entry=0xff6940, args=args@entry=0x7fffffffa3c0, num_args=num_args@entry=3, typed_args=typed_args@entry=0x0, num_typed_args=num_typed_args@entry=0) at ../../src/Create.c:570 #14 0x00007ffff66f2b0e in XtCreateWidget (name=0x703028 "verticalScrollBar", widget_class=0x7ffff6dac1c0 , parent=0xff6940, args=0x7fffffffa3c0, num_args=3) at ../../src/Create.c:589 #15 0x000000000053c417 in x_create_toolkit_scroll_bar (f=0xffed38, bar=0x134e3b8) at xterm.c:4768 #16 0x000000000053c937 in x_scroll_bar_create (w=0x13b0940, top=686, left=1, width=16, height=19) at xterm.c:4960 #17 0x000000000053d167 in XTset_vertical_scroll_bar (w=0x13b0940, portion=0, whole=0, position=0) at xterm.c:5205 #18 0x000000000046b064 in set_vertical_scroll_bar (w=0x13b0940) at xdisp.c:15905 #19 0x000000000046fcfa in redisplay_window (window=..., just_this_one_p=false) at xdisp.c:16947 #20 0x00000000004644f2 in redisplay_window_0 (window=...) at xdisp.c:14373 #21 0x00000000006173df in internal_condition_case_1 (bfun=0x4644b0 , arg=..., handlers=..., hfun=0x46447f ) at eval.c:1372 #22 0x000000000046445d in redisplay_windows (window=...) at xdisp.c:14353 #23 0x0000000000463204 in redisplay_internal () at xdisp.c:13949 #24 0x0000000000463db4 in redisplay_preserve_echo_area (from_where=12) at xdisp.c:14206 #25 0x0000000000674157 in wait_reading_process_output (time_limit=30, nsecs=0, read_kbd=-1, do_display=true, wait_for_cell=..., wait_proc=0x0, just_wait_proc=0) at process.c:4821 #26 0x0000000000422d0c in sit_for (timeout=..., reading=true, display_option=1) at dispnew.c:5867 #27 0x0000000000576bff in read_char (commandflag=1, map=..., prev_event=..., used_mouse_menu=0x7fffffffd7c5, end_time=0x0) at keyboard.c:2810 #28 0x00000000005858f4 in read_key_sequence (keybuf=0x7fffffffd9f0, bufsize=30, prompt=..., dont_downcase_last=false, can_return_switch_frame=true, fix_current_buffer=true, prevent_redisplay=false) at keyboard.c:9089 #29 0x0000000000573161 in command_loop_1 () at keyboard.c:1453 #30 0x000000000061726e in internal_condition_case (bfun=0x572d8a , handlers=..., hfun=0x57253d ) at eval.c:1348 #31 0x0000000000572a28 in command_loop_2 (ignore=...) at keyboard.c:1178 #32 0x00000000006166f1 in internal_catch (tag=..., func=0x572a05 , arg=...) at eval.c:1112 #33 0x00000000005729dc in command_loop () at keyboard.c:1157 #34 0x0000000000572069 in recursive_edit_1 () at keyboard.c:778 #35 0x0000000000572239 in Frecursive_edit () at keyboard.c:849 #36 0x000000000057017b in main (argc=7, argv=0x7fffffffddb8) at emacs.c:1642 Lisp Backtrace: "redisplay_internal (C function)" (0xd553f0) (gdb) print event $1 = (XErrorEvent *) 0x7fffffff9ac0 (gdb) print *event $2 = { type = 0, display = 0xfd7720, resourceid = 0, serial = 1942, error_code = 4 '\004', request_code = 55 '7', minor_code = 0 '\000' }