bug#9310: BadWindow error with quail guidance frame

[Stefan Monnier]

> Basically set synchronized and break in the error function.

OK, that part was already done.

> Then go up the call stack to find the frame the window belongs to,

That as well: it's the minibuffer-only frame.

> or see if it is some uninitialized value.

Doesn't look like it, the frames involved seem to have sensible
field values.  This problem started around the time the new window.c code
was installed, FWIW (which doesn't mean it's actually related).


        Stefan


(gdb) bt
#0  x_error_quitter (display=0x890b200, event=0xbfffba10) at xterm.c:7882
#1  0x081b4f29 in x_error_handler (display=0x890b200, event=0xbfffba10)
    at xterm.c:7861
#2  0xb747d0d3 in _XError () from /usr/lib/i386-linux-gnu/libX11.so.6
#3  0xb7479d7d in ?? () from /usr/lib/i386-linux-gnu/libX11.so.6
#4  0xb7479dd7 in ?? () from /usr/lib/i386-linux-gnu/libX11.so.6
#5  0xb747ac90 in _XReply () from /usr/lib/i386-linux-gnu/libX11.so.6
#6  0xb7476236 in XSync () from /usr/lib/i386-linux-gnu/libX11.so.6
#7  0xb74762d3 in ?? () from /usr/lib/i386-linux-gnu/libX11.so.6
#8  0xb74540e3 in XSetWindowBorder () from /usr/lib/i386-linux-gnu/libX11.so.6
#9  0x081ab432 in frame_highlight (f=0x89bb020) at xterm.c:3357
#10 0x081abb55 in x_frame_rehighlight (dpyinfo=0x89499c8) at xterm.c:3560
#11 0x081ab9ed in XTframe_rehighlight (frame=0x8c968e8) at xterm.c:3532
#12 0x08072c95 in Fredirect_frame_focus (frame=..., focus_frame=...)
    at frame.c:1970
[...]
(gdb) up
#10 0x081abb55 in x_frame_rehighlight (dpyinfo=0x89499c8) at xterm.c:3560
(gdb) 
#11 0x081ab9ed in XTframe_rehighlight (frame=0x8c968e8) at xterm.c:3532
(gdb) 
#12 0x08072c95 in Fredirect_frame_focus (frame=..., focus_frame=...)
    at frame.c:1970
(gdb) hp frame
Undefined command: "hp".  Try "help".
(gdb) p frame
$1 = {
  i = -1592185571, 
  s = {
    val = 18427165, 
    type = Lisp_Vectorlike
  }, 
  u = {
    val = 18427165, 
    type = Lisp_Vectorlike
  }
}
(gdb) xframe
$2 = (struct frame *) 0x8c968e8
"emacs@ceviche"
(gdb) p focus_frame
$3 = {
  i = -1592560124, 
  s = {
    val = 18052612, 
    type = Lisp_Vectorlike
  }, 
  u = {
    val = 18052612, 
    type = Lisp_Vectorlike
  }
}
(gdb) xframe
$4 = (struct frame *) 0x89bb020
" *Minibuf-0*"
(gdb) p *$2
$5 = {
  header = {
    size = 1073742870, 
    next = {
      buffer = 0x87bc8d0, 
      vector = 0x87bc8d0
    }
  }, 
  name = {
    i = -2129031219, 
    s = {
      val = 18452429, 
      type = Lisp_String
    }, 
    u = {
      val = 18452429, 
      type = Lisp_String
    }
  }, 
  icon_name = {
    i = 1091521569, 
    s = {
      val = 17779745, 
      type = Lisp_Symbol
    }, 
    u = {
      val = 17779745, 
      type = Lisp_Symbol
    }
  }, 
  title = {
    i = 1091521569, 
    s = {
      val = 17779745, 
      type = Lisp_Symbol
    }, 
    u = {
      val = 17779745, 
      type = Lisp_Symbol
    }
  }, 
  focus_frame = {
    i = -1592560124, 
    s = {
      val = 18052612, 
      type = Lisp_Vectorlike
    }, 
    u = {
      val = 18052612, 
      type = Lisp_Vectorlike
    }
  }, 
  root_window = {
    i = -1592344072, 
    s = {
      val = 18268664, 
      type = Lisp_Vectorlike
    }, 
    u = {
      val = 18268664, 
      type = Lisp_Vectorlike
    }
  }, 
  selected_window = {
    i = -1592344072, 
    s = {
      val = 18268664, 
      type = Lisp_Vectorlike
    }, 
    u = {
      val = 18268664, 
      type = Lisp_Vectorlike
    }
  }, 
  minibuffer_window = {
    i = -1592185824, 
    s = {
      val = 18426912, 
      type = Lisp_Vectorlike
    }, 
    u = {
      val = 18426912, 
      type = Lisp_Vectorlike
    }
  }, 
  param_alist = {
    i = -1055526342, 
    s = {
      val = 18215482, 
      type = Lisp_Cons
    }, 
    u = {
      val = 18215482, 
      type = Lisp_Cons
    }
  }, 
  scroll_bars = {
    i = -1592519606, 
    s = {
      val = 18093130, 
      type = Lisp_Vectorlike
    }, 
    u = {
      val = 18093130, 
      type = Lisp_Vectorlike
    }
  }, 
  condemned_scroll_bars = {
    i = 1091521569, 
    s = {
      val = 17779745, 
      type = Lisp_Symbol
    }, 
    u = {
      val = 17779745, 
      type = Lisp_Symbol
    }
  }, 
  menu_bar_items = {
    i = -1592182536, 
    s = {
      val = 18430200, 
      type = Lisp_Vectorlike
    }, 
    u = {
      val = 18430200, 
      type = Lisp_Vectorlike
    }
  }, 
  face_alist = {
    i = -1055529916, 
    s = {
      val = 18211908, 
      type = Lisp_Cons
    }, 
    u = {
      val = 18211908, 
      type = Lisp_Cons
    }
  }, 
  menu_bar_vector = {
    i = -1592118417, 
    s = {
      val = 18494319, 
      type = Lisp_Vectorlike
    }, 
    u = {
      val = 18494319, 
      type = Lisp_Vectorlike
    }
  }, 
  buffer_predicate = {
    i = 1091521569, 
    s = {
      val = 17779745, 
      type = Lisp_Symbol
    }, 
    u = {
      val = 17779745, 
      type = Lisp_Symbol
    }
  }, 
  buffer_list = {
    i = -1055455327, 
    s = {
      val = 18286497, 
      type = Lisp_Cons
    }, 
    u = {
      val = 18286497, 
      type = Lisp_Cons
    }
  }, 
  buried_buffer_list = {
    i = 1091521569, 
    s = {
      val = 17779745, 
      type = Lisp_Symbol
    }, 
    u = {
      val = 17779745, 
      type = Lisp_Symbol
    }
  }, 
  menu_bar_window = {
    i = 1091521569, 
    s = {
      val = 17779745, 
      type = Lisp_Symbol
    }, 
    u = {
      val = 17779745, 
      type = Lisp_Symbol
    }
  }, 
  tool_bar_window = {
    i = 1091521569, 
    s = {
      val = 17779745, 
      type = Lisp_Symbol
    }, 
    u = {
      val = 17779745, 
      type = Lisp_Symbol
    }
  }, 
  tool_bar_items = {
    i = -1592197120, 
    s = {
      val = 18415616, 
      type = Lisp_Vectorlike
    }, 
    u = {
      val = 18415616, 
      type = Lisp_Vectorlike
    }
  }, 
  tool_bar_position = {
    i = 1091524773, 
    s = {
      val = 17782949, 
      type = Lisp_Symbol
    }, 
    u = {
      val = 17782949, 
      type = Lisp_Symbol
    }
  }, 
  desired_tool_bar_string = {
    i = 1091521569, 
    s = {
      val = 17779745, 
      type = Lisp_Symbol
    }, 
    u = {
      val = 17779745, 
      type = Lisp_Symbol
    }
  }, 
  current_tool_bar_string = {
    i = 1091521569, 
    s = {
      val = 17779745, 
      type = Lisp_Symbol
    }, 
    u = {
      val = 17779745, 
      type = Lisp_Symbol
    }
  }, 
  face_cache = 0x8cb0e88, 
  menu_bar_items_used = 0, 
  namebuf = 0x0, 
  current_pool = 0x0, 
  desired_pool = 0x0, 
  desired_matrix = 0x0, 
  current_matrix = 0x0, 
  glyphs_initialized_p = 1, 
  resized_p = 0, 
  force_flush_display_p = 0, 
  default_face_done_p = 1, 
  already_hscrolled_p = 0, 
  updated_p = 1, 
  minimize_tool_bar_window_p = 0, 
  external_tool_bar = 1, 
  tool_bar_lines = 0, 
  n_tool_bar_rows = 0, 
  n_tool_bar_items = 13, 
  decode_mode_spec_buffer = 0x8c959e8 "", 
  insert_line_cost = 0x0, 
  delete_line_cost = 0x0, 
  insert_n_lines_cost = 0x0, 
  delete_n_lines_cost = 0x0, 
  text_lines = 35, 
  text_cols = 80, 
  total_lines = 0, 
  total_cols = 84, 
  new_text_lines = 0, 
  new_text_cols = 0, 
  left_pos = 182, 
  top_pos = 22, 
  pixel_height = 805, 
  pixel_width = 924, 
  resx = 124, 
  resy = 124, 
  x_pixels_diff = 5, 
  y_pixels_diff = 50, 
  win_gravity = 1, 
  size_hint_flags = 3, 
  border_width = 0, 
  internal_border_width = 0, 
  column_width = 11, 
  space_width = 11, 
  line_height = 23, 
  output_method = output_x_window, 
  terminal = 0x89494b0, 
  output_data = {
    tty = 0x8b61128, 
    x = 0x8b61128, 
    w32 = 0x8b61128, 
    ns = 0x8b61128, 
    nothing = 146149672
  }, 
  font_driver_list = 0x8cc0fe0, 
  font_data_list = 0x8a01a10, 
  fringe_cols = 2, 
  left_fringe_width = 11, 
  right_fringe_width = 11, 
  want_fullscreen = FULLSCREEN_NONE, 
  menu_bar_lines = 0, 
  external_menu_bar = 1, 
  display_preempted = 0 '\000', 
  visible = 1 '\001', 
  iconified = 0 '\000', 
  async_visible = 1 '\001', 
  async_iconified = 0 '\000', 
  garbaged = 0 '\000', 
  has_minibuffer = 0 '\000', 
  wants_modeline = 1 '\001', 
  can_have_scroll_bars = 1 '\001', 
  auto_raise = 0 '\000', 
  auto_lower = 0 '\000', 
  no_split = 0 '\000', 
  explicit_name = 0 '\000', 
  window_sizes_changed = 0 '\000', 
  mouse_moved = 1 '\001', 
  pointer_invisible = 0 '\000', 
  vertical_scroll_bar_type = vertical_scroll_bar_right, 
  desired_cursor = FILLED_BOX_CURSOR, 
  cursor_width = 1, 
  blink_off_cursor = DEFAULT_CURSOR, 
  blink_off_cursor_width = 0, 
  message_buf = 0x8a0de40 "\030\304\374\266\030\304", <incomplete sequence 
\374\266>, 
  scroll_bottom_vpos = -1, 
  config_scroll_bar_width = 16, 
  config_scroll_bar_cols = 2, 
  scroll_bar_actual_width = 22, 
  cost_calculation_baud_rate = 19200, 
  alpha = {-1, -1}, 
  gamma = 0, 
  extra_line_spacing = 0, 
  background_pixel = 16777215, 
  foreground_pixel = 0
}
(gdb) p *$4
$6 = {
  header = {
    size = 1073742870, 
    next = {
      buffer = 0x8c20b00, 
      vector = 0x8c20b00
    }
  }, 
  name = {
    i = -2129557179, 
    s = {
      val = 17926469, 
      type = Lisp_String
    }, 
    u = {
      val = 17926469, 
      type = Lisp_String
    }
  }, 
  icon_name = {
    i = 1091521569, 
    s = {
      val = 17779745, 
      type = Lisp_Symbol
    }, 
    u = {
      val = 17779745, 
      type = Lisp_Symbol
    }
  }, 
  title = {
    i = 1091521569, 
    s = {
      val = 17779745, 
      type = Lisp_Symbol
    }, 
    u = {
      val = 17779745, 
      type = Lisp_Symbol
    }
  }, 
  focus_frame = {
    i = 1091521569, 
    s = {
      val = 17779745, 
      type = Lisp_Symbol
    }, 
    u = {
      val = 17779745, 
      type = Lisp_Symbol
    }
  }, 
  root_window = {
    i = -1592630761, 
    s = {
      val = 17981975, 
      type = Lisp_Vectorlike
    }, 
    u = {
      val = 17981975, 
      type = Lisp_Vectorlike
    }
  }, 
  selected_window = {
    i = -1592630761, 
    s = {
      val = 17981975, 
      type = Lisp_Vectorlike
    }, 
    u = {
      val = 17981975, 
      type = Lisp_Vectorlike
    }
  }, 
  minibuffer_window = {
    i = -1592185824, 
    s = {
      val = 18426912, 
      type = Lisp_Vectorlike
    }, 
    u = {
      val = 18426912, 
      type = Lisp_Vectorlike
    }
  }, 
  param_alist = {
    i = -1055455627, 
    s = {
      val = 18286197, 
      type = Lisp_Cons
    }, 
    u = {
      val = 18286197, 
      type = Lisp_Cons
    }
  }, 
  scroll_bars = {
    i = 1091521569, 
    s = {
      val = 17779745, 
      type = Lisp_Symbol
    }, 
    u = {
      val = 17779745, 
      type = Lisp_Symbol
    }
  }, 
  condemned_scroll_bars = {
    i = 1091521569, 
    s = {
      val = 17779745, 
      type = Lisp_Symbol
    }, 
    u = {
      val = 17779745, 
      type = Lisp_Symbol
    }
  }, 
  menu_bar_items = {
    i = 1091521569, 
    s = {
      val = 17779745, 
      type = Lisp_Symbol
    }, 
    u = {
      val = 17779745, 
      type = Lisp_Symbol
    }
  }, 
  face_alist = {
    i = 1091521569, 
    s = {
      val = 17779745, 
      type = Lisp_Symbol
    }, 
    u = {
      val = 17779745, 
      type = Lisp_Symbol
    }
  }, 
  menu_bar_vector = {
    i = 1091521569, 
    s = {
      val = 17779745, 
      type = Lisp_Symbol
    }, 
    u = {
      val = 17779745, 
      type = Lisp_Symbol
    }
  }, 
  buffer_predicate = {
    i = 1091521569, 
    s = {
      val = 17779745, 
      type = Lisp_Symbol
    }, 
    u = {
      val = 17779745, 
      type = Lisp_Symbol
    }
  }, 
  buffer_list = {
    i = -1055455706, 
    s = {
      val = 18286118, 
      type = Lisp_Cons
    }, 
    u = {
      val = 18286118, 
      type = Lisp_Cons
    }
  }, 
  buried_buffer_list = {
    i = 1091521569, 
    s = {
      val = 17779745, 
      type = Lisp_Symbol
    }, 
    u = {
      val = 17779745, 
      type = Lisp_Symbol
    }
  }, 
  menu_bar_window = {
    i = 1091521569, 
    s = {
      val = 17779745, 
      type = Lisp_Symbol
    }, 
    u = {
      val = 17779745, 
      type = Lisp_Symbol
    }
  }, 
  tool_bar_window = {
    i = 1091521569, 
    s = {
      val = 17779745, 
      type = Lisp_Symbol
    }, 
    u = {
      val = 17779745, 
      type = Lisp_Symbol
    }
  }, 
  tool_bar_items = {
    i = 1091521569, 
    s = {
      val = 17779745, 
      type = Lisp_Symbol
    }, 
    u = {
      val = 17779745, 
      type = Lisp_Symbol
    }
  }, 
  tool_bar_position = {
    i = 1091524773, 
    s = {
      val = 17782949, 
      type = Lisp_Symbol
    }, 
    u = {
      val = 17782949, 
      type = Lisp_Symbol
    }
  }, 
  desired_tool_bar_string = {
    i = 1091521569, 
    s = {
      val = 17779745, 
      type = Lisp_Symbol
    }, 
    u = {
      val = 17779745, 
      type = Lisp_Symbol
    }
  }, 
  current_tool_bar_string = {
    i = 1091521569, 
    s = {
      val = 17779745, 
      type = Lisp_Symbol
    }, 
    u = {
      val = 17779745, 
      type = Lisp_Symbol
    }
  }, 
  face_cache = 0x8bdc7c8, 
  menu_bar_items_used = 0, 
  namebuf = 0x0, 
  current_pool = 0x0, 
  desired_pool = 0x0, 
  desired_matrix = 0x0, 
  current_matrix = 0x0, 
  glyphs_initialized_p = 1, 
  resized_p = 0, 
  force_flush_display_p = 0, 
  default_face_done_p = 0, 
  already_hscrolled_p = 0, 
  updated_p = 0, 
  minimize_tool_bar_window_p = 0, 
  external_tool_bar = 0, 
  tool_bar_lines = 0, 
  n_tool_bar_rows = 0, 
  n_tool_bar_items = 0, 
  decode_mode_spec_buffer = 0x8dc03f0 
"0\304\374\266\230ͽ\bre/pixmaps/default/cursors/sb_h_doub\031", 
  insert_line_cost = 0x0, 
  delete_line_cost = 0x0, 
  insert_n_lines_cost = 0x0, 
  delete_n_lines_cost = 0x0, 
  text_lines = 10, 
  text_cols = 10, 
  total_lines = 0, 
  total_cols = 10, 
  new_text_lines = 0, 
  new_text_cols = 0, 
  left_pos = 0, 
  top_pos = 0, 
  pixel_height = 0, 
  pixel_width = 0, 
  resx = 124, 
  resy = 124, 
  x_pixels_diff = 0, 
  y_pixels_diff = 0, 
  win_gravity = 0, 
  size_hint_flags = 0, 
  border_width = 0, 
  internal_border_width = 0, 
  column_width = 11, 
  space_width = 11, 
  line_height = 23, 
  output_method = output_x_window, 
  terminal = 0x89494b0, 
  output_data = {
    tty = 0x8c4ba80, 
    x = 0x8c4ba80, 
    w32 = 0x8c4ba80, 
    ns = 0x8c4ba80, 
    nothing = 147110528
  }, 
  font_driver_list = 0x8a01858, 
  font_data_list = 0x0, 
  fringe_cols = 2, 
  left_fringe_width = 11, 
  right_fringe_width = 11, 
  want_fullscreen = FULLSCREEN_NONE, 
  menu_bar_lines = 0, 
  external_menu_bar = 0, 
  display_preempted = 0 '\000', 
  visible = 0 '\000', 
  iconified = 0 '\000', 
  async_visible = 0 '\000', 
  async_iconified = 0 '\000', 
  garbaged = 1 '\001', 
  has_minibuffer = 0 '\000', 
  wants_modeline = 1 '\001', 
  can_have_scroll_bars = 1 '\001', 
  auto_raise = 0 '\000', 
  auto_lower = 0 '\000', 
  no_split = 0 '\000', 
  explicit_name = 1 '\001', 
  window_sizes_changed = 0 '\000', 
  mouse_moved = 0 '\000', 
  pointer_invisible = 0 '\000', 
  vertical_scroll_bar_type = vertical_scroll_bar_right, 
  desired_cursor = FILLED_BOX_CURSOR, 
  cursor_width = 0, 
  blink_off_cursor = FILLED_BOX_CURSOR, 
  blink_off_cursor_width = 0, 
  message_buf = 0x8c1fea0 
"0\304\374\266\350\003\334\bnnier/.icons/default/cursors/sb_h_do\031", 
  scroll_bottom_vpos = 0, 
  config_scroll_bar_width = 0, 
  config_scroll_bar_cols = 2, 
  scroll_bar_actual_width = 0, 
  cost_calculation_baud_rate = 0, 
  alpha = {0, 0}, 
  gamma = 0, 
  extra_line_spacing = 0, 
  background_pixel = 16777215, 
  foreground_pixel = 0
}
(gdb)