Subject: Re: bug#21428: 24.5; Crash of emacs on OS X, installed via homebrew cask

From: Rainer M Krug <[email-masked]>
Date: Fri, 25 Sep 2015 12:46:10 +0200

Eli Zaretskii <[email-masked]> writes:

>> From: Rainer M Krug <[email-masked]>
>> Cc: [email-masked],  [email-masked]
>> Date: Fri, 25 Sep 2015 11:34:03 +0200
>> 
>> OK - new crash: I updated this morning from git and recompiled.
>> 
>> This time it is face #42 and it seems to be in the bar above the
>> minibuffer (mode-line)??? The character look like mode-bar, but I can't
>> see them anywhere.
>
> It's not a mode line: the characters come from a buffer, whereas they
> come from strings.  Also, the number of characters is too small for a
> mode line, and the beginning doesn't resemble a mode line.
>
> The "vpos=1" part here:
>
>> | #7 0x000000010000f902 in update_window_line (w=0x1020bfbe0,
>> | vpos=1, mouse_face_overwritten_p=0x7fff5fbfbdc2) at dispnew.c:3854
>
> means this is the second (zero-based) screen line of some window.  It
> looks like a mode spec at the beginning of some Org file:
>
>   #     -*- mode: org -*-
>
> Does that ring any bells?  Can you try recreating that window in a
> live session, so we could see what face is #42?

Found it - I only looked at visible tabs - not the non-visible ones.

describe-face:
,----
| Face: font-lock-comment-face (sample) (customize this face)
| 
| Documentation:
| Font Lock mode face used to highlight comments.
| 
| Defined in ‘font-lock.el’.
| 
|            Family: unspecified
|           Foundry: unspecified
|             Width: unspecified
|            Height: unspecified
|            Weight: unspecified
|             Slant: italic
|        Foreground: #8D8D84
| DistantForeground: unspecified
|        Background: unspecified
|         Underline: unspecified
|          Overline: unspecified
|    Strike-through: unspecified
|               Box: unspecified
|           Inverse: unspecified
|           Stipple: unspecified
|              Font: unspecified
|           Fontset: unspecified
|           Inherit: unspecified
`----

describe-text-properties

,----
| Text content at position 17:
| 
| 
| There are text properties here:
|   face                 font-lock-comment-face
|   font-lock-fontified  t
|   fontified            t
|   line-prefix          ""
|   org-category         "EnergyBalance"
|   wrap-prefix          ""
| 
| [back]
`----

>
>> | (gdb) p f->face_cache->used
>> | $1 = 31
>
> Hmmm, the same number 31 as in the previous crash.  Interesting.

I can also add the next crash.

,----
| xdisp.c:24333: Emacs fatal error: assertion failed: face != NULL
| 
| Breakpoint 1, terminate_due_to_signal (sig=6, backtrace_limit=2147483647) at emacs.c:370
| 370	  signal (sig, SIG_DFL);
| (gdb) bt
| #0  terminate_due_to_signal (sig=6, backtrace_limit=2147483647) at emacs.c:370
| #1  0x00000001002256eb in die (msg=0x1003b680a "face != NULL", file=0x1003b24f0 "xdisp.c", line=24333) at alloc.c:6951
| #2  0x0000000100062f17 in get_glyph_face_and_encoding (f=0x10281dc30, glyph=0x10379b980, char2b=0x7fff5fbfb440) at xdisp.c:24333
| #3  0x00000001000b581d in fill_glyph_string (s=0x7fff5fbfb460, face_id=61, start=8, end=21, overlaps=0) at xdisp.c:24558
| #4  0x000000010006d5c9 in draw_glyphs (w=0x10281cc30, x=72, row=0x1198e4200, area=TEXT_AREA, start=0, end=21, hl=DRAW_NORMAL_TEXT, overlaps=0) at xdisp.c:25225
| #5  0x000000010006cef1 in x_write_glyphs (w=0x10281cc30, updated_row=0x1198e4200, start=0x10379b800, updated_area=TEXT_AREA, len=21) at xdisp.c:27256
| #6  0x0000000100011d98 in update_text_area (w=0x10281cc30, updated_row=0x1198e4200, vpos=8) at dispnew.c:3611
| #7  0x000000010000f952 in update_window_line (w=0x10281cc30, vpos=8, mouse_face_overwritten_p=0x7fff5fbfbdf2) at dispnew.c:3854
| #8  0x00000001000078a2 in update_window (w=0x10281cc30, force_p=true) at dispnew.c:3477
| #9  0x00000001000066af in update_window_tree (w=0x10281cc30, force_p=true) at dispnew.c:3219
| #10 0x000000010000638b in update_frame (f=0x10281dc30, force_p=true, inhibit_hairy_id_p=false) at dispnew.c:3108
| #11 0x0000000100051fa9 in redisplay_internal () at xdisp.c:13815
| #12 0x0000000100053ac9 in redisplay () at xdisp.c:13059
| #13 0x0000000100184339 in read_char (commandflag=1, map=4799273539, prev_event=0, used_mouse_menu=0x7fff5fbfefb7, end_time=0x0) at keyboard.c:2465
| #14 0x000000010017f299 in read_key_sequence (keybuf=0x7fff5fbff2f0, bufsize=30, prompt=0, dont_downcase_last=false, can_return_switch_frame=true, fix_current_buffer=true, prevent_redisplay=false) at keyboard.c:9030
| #15 0x000000010017db96 in command_loop_1 () at keyboard.c:1348
| #16 0x0000000100260706 in internal_condition_case (bfun=0x10017d5a0 <command_loop_1>, handlers=17616, hfun=0x100198e10 <cmd_error>) at eval.c:1309
| #17 0x0000000100198d0c in command_loop_2 (ignore=0) at keyboard.c:1088
| #18 0x000000010025f7ce in internal_catch (tag=42768, func=0x100198ce0 <command_loop_2>, arg=0) at eval.c:1073
| #19 0x000000010017c8e0 in command_loop () at keyboard.c:1067
| #20 0x000000010017c722 in recursive_edit_1 () at keyboard.c:673
| #21 0x000000010017cb13 in Frecursive_edit () at keyboard.c:744
| #22 0x000000010017a6ba in main (argc=1, argv=0x7fff5fbff8f0) at emacs.c:1643
| Current language:  auto; currently minimal
| 
| Lisp Backtrace:
| "redisplay_internal (C function)" (0x0)
| (gdb) frame
| #0  terminate_due_to_signal (sig=6, backtrace_limit=2147483647) at emacs.c:370
| 370	  signal (sig, SIG_DFL);
| (gdb) frame 4
| #4  0x000000010006d5c9 in draw_glyphs (w=0x10281cc30, x=72, row=0x1198e4200, area=TEXT_AREA, start=0, end=21, hl=DRAW_NORMAL_TEXT, overlaps=0) at xdisp.c:25225
| 25225	  BUILD_GLYPH_STRINGS (i, end, head, tail, hl, x, last_x);
| (gdb) frame 2
| #2  0x0000000100062f17 in get_glyph_face_and_encoding (f=0x10281dc30, glyph=0x10379b980, char2b=0x7fff5fbfb440) at xdisp.c:24333
| 24333	  eassert (face != NULL);
| (gdb)  p f->face_cache->used
| $1 = 38
| (gdb) pgrow
| No symbol "row" in current context.
| (gdb) frame 4
| #4  0x000000010006d5c9 in draw_glyphs (w=0x10281cc30, x=72, row=0x1198e4200, area=TEXT_AREA, start=0, end=21, hl=DRAW_NORMAL_TEXT, overlaps=0) at xdisp.c:25225
| 25225	  BUILD_GLYPH_STRINGS (i, end, head, tail, hl, x, last_x);
| (gdb) pgrow
| TEXT: 21 glyphs
|   0    0: CHAR[*] str=0x1e87ebb8[0] blev=0,btyp=L w=8 a+d=14+4 face=15 AVOID
|   1    8: CHAR[*] str=0x1e87ebb8[1] blev=0,btyp=L w=8 a+d=14+4 face=15 AVOID
|   2   16: CHAR[*] str=0x1e87ebb8[2] blev=0,btyp=L w=8 a+d=14+4 face=15 AVOID
|   3   24: CHAR[*] pos=68687 blev=0,btyp=L w=8 a+d=14+4 face=15 MB
|   4   32: CHAR[*] pos=68688 blev=0,btyp=L w=8 a+d=14+4 face=15 MB
|   5   40: CHAR[*] pos=68689 blev=0,btyp=L w=8 a+d=14+4 face=15 MB
|   6   48: CHAR[*] pos=68690 blev=0,btyp=L w=8 a+d=14+4 face=19 MB
|   7   56: CHAR[ ] pos=68691 blev=0,btyp=L w=8 a+d=14+4 face=19 MB
|   8   64: CHAR[l] pos=68692 blev=0,btyp=L w=8 a+d=14+4 face=61 MB
|   9   72: CHAR[o] pos=68693 blev=0,btyp=L w=8 a+d=14+4 face=61 MB
|  10   80: CHAR[a] pos=68694 blev=0,btyp=L w=8 a+d=14+4 face=61 MB
|  11   88: CHAR[d] pos=68695 blev=0,btyp=L w=8 a+d=14+4 face=61 MB
|  12   96: CHAR[M] pos=68696 blev=0,btyp=L w=8 a+d=14+4 face=61 MB
|  13  104: CHAR[u] pos=68697 blev=0,btyp=L w=8 a+d=14+4 face=61 MB
|  14  112: CHAR[l] pos=68698 blev=0,btyp=L w=8 a+d=14+4 face=61 MB
|  15  120: CHAR[t] pos=68699 blev=0,btyp=L w=8 a+d=14+4 face=61 MB
|  16  128: CHAR[i] pos=68700 blev=0,btyp=L w=8 a+d=14+4 face=61 MB
|  17  136: CHAR[p] pos=68701 blev=0,btyp=L w=8 a+d=14+4 face=61 MB
|  18  144: CHAR[l] pos=68702 blev=0,btyp=L w=8 a+d=14+4 face=61 MB
|  19  152: CHAR[e] pos=68703 blev=0,btyp=L w=8 a+d=14+4 face=61 MB
|  20  160: CHAR[ ] pos=0 blev=0,btyp=B w=8 a+d=14+4 MB
| (gdb) xbacktrace
| "redisplay_internal (C function)" (0x0)
| (gdb) bt full
| #0  terminate_due_to_signal (sig=6, backtrace_limit=2147483647) at emacs.c:370
| No locals.
| #1  0x00000001002256eb in die (msg=0x1003b680a "face != NULL", file=0x1003b24f0 "xdisp.c", line=24333) at alloc.c:6951
| No locals.
| #2  0x0000000100062f17 in get_glyph_face_and_encoding (f=0x10281dc30, glyph=0x10379b980, char2b=0x7fff5fbfb440) at xdisp.c:24333
| 	face = (struct face *) 0x0
| 	code = 0
| #3  0x00000001000b581d in fill_glyph_string (s=0x7fff5fbfb460, face_id=61, start=8, end=21, overlaps=0) at xdisp.c:24558
| 	glyph = (struct glyph *) 0x10379b980
| 	last = (struct glyph *) 0x10379bbf0
| 	voffset = 0
| 	glyph_not_available_p = false
| #4  0x000000010006d5c9 in draw_glyphs (w=0x10281cc30, x=72, row=0x1198e4200, area=TEXT_AREA, start=0, end=21, hl=DRAW_NORMAL_TEXT, overlaps=0) at xdisp.c:25225
| 	face_id = 61
| 	char2b = (XChar2b *) 0x7fff5fbfb440
| 	first_glyph = (struct glyph *) 0x10379b980
| 	head = (struct glyph_string *) 0x7fff5fbfb6f0
| 	tail = (struct glyph_string *) 0x7fff5fbfb460
| 	s = (struct glyph_string *) 0x7fff5fbfb460
| 	clip_head = (struct glyph_string *) 0x0
| 	clip_tail = (struct glyph_string *) 0x0
| 	i = 8
| 	j = 1519979
| 	x_reached = 1
| 	last_x = 2537
| 	area_left = 8
| 	f = (struct frame *) 0x10281dc30
| 	sa_avail = 16286
| 	sa_count = 5
| 	sa_must_free = false
| #5  0x000000010006cef1 in x_write_glyphs (w=0x10281cc30, updated_row=0x1198e4200, start=0x10379b800, updated_area=TEXT_AREA, len=21) at xdisp.c:27256
| 	x = 16779745
| 	hpos = 0
| 	chpos = 10
| #6  0x0000000100011d98 in update_text_area (w=0x10281cc30, updated_row=0x1198e4200, vpos=8) at dispnew.c:3611
| 	current_row = (struct glyph_row *) 0x119d7a200
| 	desired_row = (struct glyph_row *) 0x1198e4200
| 	rif = (struct redisplay_interface *) 0x1007d8e98
| 	changed_p = false
| #7  0x000000010000f952 in update_window_line (w=0x10281cc30, vpos=8, mouse_face_overwritten_p=0x7fff5fbfbdf2) at dispnew.c:3854
| 	current_row = (struct glyph_row *) 0x119d7a200
| 	desired_row = (struct glyph_row *) 0x1198e4200
| 	rif = (struct redisplay_interface *) 0x1007d8e98
| 	changed_p = false
| #8  0x00000001000078a2 in update_window (w=0x10281cc30, force_p=true) at dispnew.c:3477
| 	vpos = 8
| 	i = 68740
| 	end = (struct glyph_row *) 0x1198ebb00
| 	mode_line_row = (struct glyph_row *) 0x1198ebb00
| 	header_line_row = (struct glyph_row *) 0x1198e3a00
| 	changed_p = true
| 	mouse_face_overwritten_p = false
| 	row = (struct glyph_row *) 0x1198e4200
| 	yb = 1402
| 	n_updated = 0
| 	desired_matrix = (struct glyph_matrix *) 0x11073dc80
| 	paused_p = false
| 	preempt_count = 17
| 	rif = (struct redisplay_interface *) 0x1007d8e98
| #9  0x00000001000066af in update_window_tree (w=0x10281cc30, force_p=true) at dispnew.c:3219
| 	paused_p = false
| #10 0x000000010000638b in update_frame (f=0x10281dc30, force_p=true, inhibit_hairy_id_p=false) at dispnew.c:3108
| 	paused_p = false
| 	root_window = (struct window *) 0x10281cc30
| #11 0x0000000100051fa9 in redisplay_internal () at xdisp.c:13815
| 	gcscrollbars = false
| 	f = (struct frame *) 0x10281dc30
| 	w = (struct window *) 0x10281cc30
| 	sw = (struct window *) 0x10281cc30
| 	fr = (struct frame *) 0x10281dc30
| 	pending = false
| 	must_finish = false
| 	match_p = true
| 	tlbufpos = {
|   charpos = 68726,
|   bytepos = 68771
| }
| 	tlendpos = {
|   charpos = 212048,
|   bytepos = 212053
| }
| 	number_of_visible_frames = 1
| 	count = 2
| 	sf = (struct frame *) 0x10281dc30
| 	polling_stopped_here = true
| 	tail = 4395852867
| 	frame = 4337032245
| 	consider_all_windows_p = true
| 	update_miniwindow_p = false
| #12 0x0000000100053ac9 in redisplay () at xdisp.c:13059
| No locals.
| #13 0x0000000100184339 in read_char (commandflag=1, map=4799273539, prev_event=0, used_mouse_menu=0x7fff5fbfefb7, end_time=0x0) at keyboard.c:2465
| 	echo_current = true
| 	c = 0
| 	jmpcount = 140734799801360
| 	local_getcjmp = 0x7fff5fbfeba0
| 	save_jump = 0x7fff5fbfeb00
| 	tem = 2
| 	save = 0
| 	previous_echo_area_message = 0
| 	also_record = 0
| 	reread = false
| 	recorded = false
| 	polling_stopped_here = false
| 	orig_kboard = (struct kboard *) 0x101317100
| #14 0x000000010017f299 in read_key_sequence (keybuf=0x7fff5fbff2f0, bufsize=30, prompt=0, dont_downcase_last=false, can_return_switch_frame=true, fix_current_buffer=true, prevent_redisplay=false) at keyboard.c:9030
| 	interrupted_kboard = (KBOARD *) 0x101317100
| 	interrupted_frame = (struct frame *) 0x10281dc30
| 	key = 140734799802480
| 	used_mouse_menu = false
| 	echo_local_start = 0
| 	last_real_key_start = 0
| 	keys_local_start = 0
| 	new_binding = 80853
| 	count = 2
| 	t = 0
| 	echo_start = 0
| 	keys_start = 0
| 	current_binding = 4799273539
| 	first_event = 0
| 	first_unbound = 31
| 	mock_input = 0
| 	fkey = {
|   parent = 4395752691,
|   map = 4395752691,
|   start = 0,
|   end = 0
| }
| 	keytran = {
|   parent = 4328555075,
|   map = 4328555075,
|   start = 0,
|   end = 0
| }
| 	indec = {
|   parent = 4395752755,
|   map = 4395752755,
|   start = 0,
|   end = 0
| }
| 	shift_translated = false
| 	delayed_switch_frame = 0
| 	original_uppercase = 0
| 	original_uppercase_position = -1
| 	dummyflag = false
| 	starting_buffer = (struct buffer *) 0x1109d4ea0
| 	fake_prefixed_keys = 0
| #15 0x000000010017db96 in command_loop_1 () at keyboard.c:1348
| 	cmd = 25432416
| 	keybuf = 0x7fff5fbff2f0
| 	i = 1
| 	prev_modiff = 46181
| 	prev_buffer = (struct buffer *) 0x1109d4ea0
| 	already_adjusted = false
| #16 0x0000000100260706 in internal_condition_case (bfun=0x10017d5a0 <command_loop_1>, handlers=17616, hfun=0x100198e10 <cmd_error>) at eval.c:1309
| 	val = 4303299704
| 	c = (struct handler *) 0x1010099e0
| #17 0x0000000100198d0c in command_loop_2 (ignore=0) at keyboard.c:1088
| 	val = 2
| #18 0x000000010025f7ce in internal_catch (tag=42768, func=0x100198ce0 <command_loop_2>, arg=0) at eval.c:1073
| 	val = 0
| 	c = (struct handler *) 0x1010098f0
| #19 0x000000010017c8e0 in command_loop () at keyboard.c:1067
| No locals.
| #20 0x000000010017c722 in recursive_edit_1 () at keyboard.c:673
| 	count = 1
| 	val = 0
| #21 0x000000010017cb13 in Frecursive_edit () at keyboard.c:744
| 	count = 0
| 	buffer = 0
| #22 0x000000010017a6ba in main (argc=1, argv=0x7fff5fbff8f0) at emacs.c:1643
| 	dummy = 140734799806464
| 	stack_bottom_variable = 0 '\0'
| 	do_initial_setlocale = true
| 	dumping = false
| 	skip_args = 0
| 	rlim = {
|   rlim_cur = 8720000,
|   rlim_max = 67104768
| }
| 	no_loadup = false
| 	junk = 0x0
| 	dname_arg = 0x0
| 	dname_arg2 = 0x7fff5fbff870 "\001"
| 	ch_to_dir = 0x0
| 	original_pwd = 0x0
| 
| Lisp Backtrace:
| "redisplay_internal (C function)" (0x0)
| (gdb)
`----

The face is as follow: (the one where it crashed was not saved, not even
in the autosave, so I choose the same one (******* plot)).

Here is a link to the screenshot (or should I attach the next time?)

describe-text-properties

,----
| Text content at position 68694:
| 
| 
| There are text properties here:
|   face                 org-level-4
|   fontified            t
|   line-prefix          [Show]
|   org-category         "EnergyBalance"
|   org-stats            0
|   wrap-prefix          [Show]
| 
| [back]
`----

describe-face
,----
| Face: org-level-4 (sample) (customize this face)
| 
| Documentation:
| Face used for level 4 headlines.
| 
| Defined in ‘org-faces.el’.
| 
|            Family: unspecified
|           Foundry: unspecified
|             Width: unspecified
|            Height: 1.0
|            Weight: bold
|             Slant: normal
|        Foreground: #EA6300
| DistantForeground: unspecified
|        Background: unspecified
|         Underline: unspecified
|          Overline: unspecified
|    Strike-through: unspecified
|               Box: unspecified
|           Inverse: unspecified
|           Stipple: unspecified
|              Font: unspecified
|           Fontset: unspecified
|           Inherit: unspecified
| 
| [back]
`----

Rainer

> Thanks.

-- 
Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology, UCT), Dipl. Phys. (Germany)

Centre of Excellence for Invasion Biology
Stellenbosch University
South Africa

Tel :       +33 - (0)9 53 10 27 44
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email:      [email-masked]

Skype:      RMkrug

PGP: 0x0F52F982