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bug#11717: 24.1.50; Segmentation fault in Fdelete_other_windows_internal
From: |
David Engster |
Subject: |
bug#11717: 24.1.50; Segmentation fault in Fdelete_other_windows_internal when running Gnus unit tests |
Date: |
Fri, 15 Jun 2012 21:00:29 +0200 |
User-agent: |
Gnus/5.110018 (No Gnus v0.18) Emacs/24.1.50 (gnu/linux) |
Eli Zaretskii writes:
> This is a duplicate of 11677.
Sorry. I should have searched better.
> I asked there to find out which parts of MOUSE_HL_INFO cause the
> segfault, and also perhaps provide a simpler test case. Can you do
> that?
Generating a simple test case will be difficult since it involves the
pretty complicated Gnus window configurations. But I'll try to come up
with something.
Regarding MOUSE_HL_INFO, I guess this
(gdb) p f->output_data
$6 = {
tty = 0x0,
x = 0x0,
w32 = 0x0,
ns = 0x0,
nothing = 0
}
doesn't play well with either expression which might get executed in the
macro. FRAME_WINDOW_P(f) is false since output_method is
'output_initial', hence it tries to access
output_data.tty->display_info->mouse_highlight.
Here's the complete frame structure:
(gdb) print *f
$9 = {
header = {
size = 1073742870,
next = {
nbytes = 384,
buffer = 0x180,
vector = 0x180
}
},
name = 137092657,
icon_name = 139113722,
title = 139113722,
focus_frame = 139113722,
root_window = 139572509,
selected_window = 139160437,
minibuffer_window = 139160725,
param_alist = 139113722,
scroll_bars = 139113722,
condemned_scroll_bars = 139113722,
menu_bar_items = 139113722,
face_alist = 145828926,
menu_bar_vector = 139113722,
buffer_predicate = 139113722,
buffer_list = 147711830,
buried_buffer_list = 147676854,
menu_bar_window = 139113722,
tool_bar_window = 139113722,
tool_bar_items = 139113722,
tool_bar_position = 139139642,
desired_tool_bar_string = 139113722,
current_tool_bar_string = 139113722,
face_cache = 0x84e9eb8,
menu_bar_items_used = 0,
namebuf = 0x0,
current_pool = 0x84b7b20,
desired_pool = 0x84b7b08,
desired_matrix = 0x84b7b38,
current_matrix = 0x84b7b88,
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 = 0x84bb328 "",
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 = 0,
resy = 0,
x_pixels_diff = 0,
y_pixels_diff = 0,
win_gravity = 0,
size_hint_flags = 0,
border_width = 0,
internal_border_width = 0,
column_width = 1,
space_width = 0,
line_height = 1,
output_method = output_initial,
terminal = 0x84b6920,
output_data = {
tty = 0x0,
x = 0x0,
w32 = 0x0,
ns = 0x0,
nothing = 0
},
font_driver_list = 0x0,
font_data_list = 0x0,
fringe_cols = 0,
left_fringe_width = 0,
right_fringe_width = 0,
want_fullscreen = FULLSCREEN_NONE,
menu_bar_lines = 1,
external_menu_bar = 0,
display_preempted = 0 '\000',
visible = 1 '\001',
iconified = 0 '\000',
async_visible = 1 '\001',
async_iconified = 0 '\000',
garbaged = 1 '\001',
has_minibuffer = 1 '\001',
wants_modeline = 1 '\001',
---Type <return> to continue, or q <return> to quit---
can_have_scroll_bars = 0 '\000',
auto_raise = 0 '\000',
auto_lower = 0 '\000',
no_split = 0 '\000',
explicit_name = 0 '\000',
window_sizes_changed = 1 '\001',
mouse_moved = 0 '\000',
pointer_invisible = 0 '\000',
vertical_scroll_bar_type = vertical_scroll_bar_none,
desired_cursor = FILLED_BOX_CURSOR,
cursor_width = 0,
blink_off_cursor = FILLED_BOX_CURSOR,
blink_off_cursor_width = 0,
message_buf = 0x84bb2f8 "",
scroll_bottom_vpos = 0,
config_scroll_bar_width = 0,
config_scroll_bar_cols = 0,
scroll_bar_actual_width = 0,
cost_calculation_baud_rate = 0,
alpha = {0, 0},
gamma = 0,
extra_line_spacing = 0,
background_pixel = 4294967293,
foreground_pixel = 4294967294
}
-David