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Crash displaying byte-code
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From: |
Juanma Barranquero |
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Subject: |
Crash displaying byte-code |
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Date: |
Tue, 5 Aug 2008 13:35:48 +0200 |
I can consistently reproduce this crash, though it is perhaps a bit
specific to my compiler setup, etc.
emacs -Q
M-x ielm <RET>
then type
(let ((standard-output (current-buffer)))
(setq unibyte-display-via-language-environment t)
(set-buffer-multibyte nil)
(backtrace))
Now, the catches:
- If Emacs is run from inside GDB, it "hangs" for a while and finally
crashes with the attached backtrace 1.
- If run from the command-line, after doing the above it crashes
immediately; the DrMingw backtrace is a bit different (backtrace 2).
- It only happens with an optimized build. <sigh>
- All the above steps are required, including executing the `let'
from inside IELM. In fact, the crash happens while IELM is trying to
display byte-code("...")
This is on Windows XP (Pro and Home) Spanish Edition, Emacs compiled
with gcc "(GCC) 4.3.0 20080305 (alpha-testing) mingw-20080502",
-DENABLE_CHECKING=1 and -fno-crossjumping.
Juanma
-------------------------------------------------------------------------
------------------------------ backtrace 1 ------------------------------
-------------------------------------------------------------------------
Program received signal SIGSEGV, Segmentation fault.
0x011f45c7 in x_draw_glyph_string_foreground (s=0x82ea60) at w32term.c:1327
1327 font->driver->draw (s, 0, s->nchars, x, y, 0);
(gdb) bt
#0 0x011f45c7 in x_draw_glyph_string_foreground (s=0x82ea60) at w32term.c:1327
#1 0x011f59d7 in x_draw_glyph_string (s=0x82ea60) at w32term.c:2282
#2 0x01056300 in draw_glyphs (w=0x2f77000, x=208, row=0x2dae688,
area=TEXT_AREA, start=1, end=19,
hl=DRAW_NORMAL_TEXT, overlaps=0) at xdisp.c:20475
#3 0x01059319 in x_write_glyphs (start=0x2e08020, len=18) at xdisp.c:21819
#4 0x0115c449 in update_window_line (w=0x2f77000, vpos=11,
mouse_face_overwritten_p=0x82f0ec) at dispnew.c:4593
#5 0x0115ca7c in update_window (w=0x2f77000, force_p=0) at dispnew.c:4309
#6 0x0115f136 in update_window_tree (w=0x2f77000, force_p=0) at dispnew.c:4002
#7 0x01160924 in update_frame (f=0x2dda800, force_p=0,
inhibit_hairy_id_p=0) at dispnew.c:3930
#8 0x01047481 in redisplay_internal (preserve_echo_area=<value
optimized out>) at xdisp.c:11854
#9 0x0108a5b9 in read_char (commandflag=1, nmaps=2, maps=0x82fb70,
prev_event=47519745, used_mouse_menu=0x82fc34,
end_time=0x0) at keyboard.c:2652
#10 0x0108ec0a in read_key_sequence (keybuf=0x82fcd4, bufsize=30,
prompt=47519745, dont_downcase_last=0,
can_return_switch_frame=1, fix_current_buffer=1) at keyboard.c:9349
#11 0x01091d7d in command_loop_1 () at keyboard.c:1620
#12 0x01019006 in internal_condition_case (bfun=0x1091aef
<command_loop_1>, handlers=47583497,
hfun=0x1088d56 <cmd_error>) at eval.c:1511
#13 0x0108806b in command_loop_2 () at keyboard.c:1338
#14 0x010190b0 in internal_catch (tag=47579569, func=0x1088048
<command_loop_2>, arg=47519745) at eval.c:1247
#15 0x01088b9b in command_loop () at keyboard.c:1317
#16 0x01088eef in recursive_edit_1 () at keyboard.c:942
#17 0x0108905a in Frecursive_edit () at keyboard.c:1004
#18 0x01002c41 in main (argc=2, argv=0xa841e0) at emacs.c:1688
-------------------------------------------------------------------------
------------------------------ backtrace 2 ------------------------------
-------------------------------------------------------------------------
Call stack:
011EEEB2 emacs.exe:011EEEB2 x_draw_glyph_string_background w32term.c:1265
...
else
#endif
> if (FONT_HEIGHT (s->font) < s->height - 2 * box_line_width
|| s->font_not_found_p
|| s->extends_to_end_of_line_p
...
011F6111 emacs.exe:011F6111 x_draw_glyph_string w32term.c:2252
...
x_set_glyph_string_clipping (s);
x_draw_glyph_string_background (s, 1);
> x_draw_glyph_string_box (s);
x_set_glyph_string_clipping (s);
relief_drawn_p = 1;
...
01056300 emacs.exe:01056300 draw_glyphs xdisp.c:20474
...
/* Draw all strings. */
> for (s = head; s; s = s->next)
FRAME_RIF (f)->draw_glyph_string (s);
...
01059319 emacs.exe:01059319 x_write_glyphs xdisp.c:21819
...
hpos = start - updated_row->glyphs[updated_area];
> x = draw_glyphs (updated_window, output_cursor.x,
updated_row, updated_area,
hpos, hpos + len,
...
0115C449 emacs.exe:0115C449 update_window_line dispnew.c:4593
...
{
rif->cursor_to (vpos, i, desired_row->y, x);
> rif->write_glyphs (desired_glyph, desired_row->used[TEXT_AREA] - i);
changed_p = 1;
}
...
0115CA7C emacs.exe:0115CA7C update_window dispnew.c:4309
...
detect_input_pending_ignore_squeezables ();
#endif
> changed_p |= update_window_line (w, vpos,
&mouse_face_overwritten_p);
...
0115F136 emacs.exe:0115F136 update_window_tree dispnew.c:4002
...
paused_p |= update_window_tree (XWINDOW (w->vchild), force_p);
else if (w->must_be_updated_p)
> paused_p |= update_window (w, force_p);
w = NILP (w->next) ? 0 : XWINDOW (w->next);
...
01160924 emacs.exe:01160924 update_frame dispnew.c:3930
...
/* Update windows. */
> paused_p = update_window_tree (root_window, force_p);
update_end (f);
...
01047481 emacs.exe:01047481 redisplay_internal xdisp.c:11854
...
/* Update the display. */
set_window_update_flags (XWINDOW (f->root_window), 1);
> pause |= update_frame (f, 0, 0);
#if 0 /* Exiting the loop can leave the wrong value for buffer_shared.
*/
if (pause)
...
0108A5B9 emacs.exe:0108A5B9 read_char keyboard.c:2652
...
redisplay_preserve_echo_area (5);
else
> redisplay ();
if (!input_pending)
...
0108EC0A emacs.exe:0108EC0A read_key_sequence keyboard.c:9349
...
KBOARD *interrupted_kboard = current_kboard;
struct frame *interrupted_frame = SELECTED_FRAME ();
> key = read_char (NILP (prompt), nmaps,
(Lisp_Object *) submaps, last_nonmenu_event,
&used_mouse_menu, NULL);
...
01091D7D emacs.exe:01091D7D command_loop_1 keyboard.c:1620
...
/* Read next key sequence; i gets its length. */
> i = read_key_sequence (keybuf, sizeof keybuf / sizeof keybuf[0],
Qnil, 0, 1, 1);
...
01019006 emacs.exe:01019006 internal_condition_case eval.c:1511
...
handlerlist = &h;
> val = (*bfun) ();
catchlist = c.next;
handlerlist = h.next;
...
0108806B emacs.exe:0108806B command_loop_2 keyboard.c:1339
...
do
val = internal_condition_case (command_loop_1, Qerror, cmd_error);
> while (!NILP (val));
return Qnil;
...
010190B0 emacs.exe:010190B0 internal_catch eval.c:1247
...
/* Call FUNC. */
if (! _setjmp (c.jmp))
> c.val = (*func) (arg);
/* Throw works by a longjmp that comes right here. */
...
01088B9B emacs.exe:01088B9B command_loop keyboard.c:1318
...
#endif
internal_catch (Qtop_level, command_loop_2, Qnil);
> executing_kbd_macro = Qnil;
/* End of file in -batch run causes exit here. */
...
01088EEF emacs.exe:01088EEF recursive_edit_1 keyboard.c:942
...
redisplaying_p = 0;
> val = command_loop ();
if (EQ (val, Qt))
Fsignal (Qquit, Qnil);
...
0108905A emacs.exe:0108905A Frecursive_edit keyboard.c:1005
...
recursive_edit_1 ();
> return unbind_to (count, Qnil);
}
...
01002C41 emacs.exe:01002C41 main emacs.c:1691
...
/* NOTREACHED */
return 0;
> }
/* Sort the args so we can find the most important ones
...
0100124B emacs.exe:0100124B
01001298 emacs.exe:01001298
7C816FD7 kernel32.dll:7C816FD7 RegisterWaitForInputIdle
- Crash displaying byte-code,
Juanma Barranquero <=