24.0.91; Emacs runtime crashes while exporting an org file

24.0.91; Emacs runtime crashes while exporting an org file

[Jambunathan K]

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Summary:
24.0.91; Emacs runtime crashes while exporting with org-latex

1. Start Emacs with -Q
2. Open the attached .org file
3. C-c C-e l (l as in latex)
4. See that Emacs crashes

I am using the Windows build downloaded from alpha.gnu.org.

I don't know how to attach debugger to the Emacs build.

If no one is able to reproduce the crash, I can try attaching a
debugger.

ps: The crash can be seen with git version of orgmode as well and
manifests itself even during html export.

In GNU Emacs 24.0.91.1 (i386-mingw-nt5.1.2600)
 of 2011-11-15 on MARVIN
Windowing system distributor `Microsoft Corp.', version 5.1.2600
configured using `configure --with-gcc (4.6) --no-opt --cflags -I"D:/devel/emacs/libs/libXpm-3.5.8/include" -I"D:/devel/emacs/libs/libXpm-3.5.8/src" -I"D:/devel/emacs/libs/libpng-dev_1.4.3-1/include" -I"D:/devel/emacs/libs/zlib-dev_1.2.5-2/include" -I"D:/devel/emacs/libs/giflib-4.1.4-1/include" -I"D:/devel/emacs/libs/jpeg-6b-4/include" -I"D:/devel/emacs/libs/tiff-3.8.2-1/include" -I"D:/devel/emacs/libs/gnutls-2.10.1/include" --ldflags -L"D:/devel/emacs/libs/gnutls-2.10.1/lib"'

Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: ENG
  value of $XMODIFIERS: nil
  locale-coding-system: cp1252
  default enable-multibyte-characters: t


[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #2: zotero.org --]
[-- Type: text/x-org, Size: 587 bytes --]

#+TITLE:     zotero.org
#+AUTHOR:    Jambunathan K
#+EMAIL:     kjambunathan@gmail.com
#+DATE:      2011-11-16 Wed
#+DESCRIPTION:
#+KEYWORDS:
#+LANGUAGE:  en
#+OPTIONS:   H:3 num:t toc:t \n:nil @:t ::t |:t ^:t -:t f:t *:t <:t
#+OPTIONS:   TeX:t LaTeX:dvipng skip:nil d:nil todo:t pri:nil tags:not-in-toc

#+EXPORT_SELECT_TAGS: export
#+EXPORT_EXCLUDE_TAGS: noexport
#+LINK_UP:   
#+LINK_HOME: 
#+XSLT:

* Zotero links as footnotes

 This is a footnote-style citation[fn:1]. Here the Zotero link will be
 formatted in to a Citation Block.

* Footnotes

[fn:1] [[http://www.google.com]]

bug#10071: 24.0.91; Emacs runtime crashes while exporting an org file

[Eli Zaretskii]

> From: Jambunathan K <kjambunathan@gmail.com>
> Date: Fri, 18 Nov 2011 13:25:55 +0530
> Cc: emacs-orgmode@gnu.org
> 
> 1. Start Emacs with -Q
> 2. Open the attached .org file
> 3. C-c C-e l (l as in latex)
> 4. See that Emacs crashes
> 
> I am using the Windows build downloaded from alpha.gnu.org.

Confirmed, both on MS-Windows and on GNU/Linux.  Here's the backtrace
from the current trunk tip (revno 106407) built on MS-Windows:

  intervals.c:1736: Emacs fatal error: assertion failed: (tree) != 0 && (tree)->up_obj == 0

  Breakpoint 1, w32_abort () at w32fns.c:7190
  7190      button = MessageBox (NULL,
  (gdb) bt
  #0  w32_abort () at w32fns.c:7190
  #1  0x01043c8e in die (
      msg=0x15f8b84 "assertion failed: (tree) != 0 && (tree)->up_obj == 0",
      file=0x15f8640 "intervals.c", line=1736) at alloc.c:6316
  #2  0x012ebe79 in graft_intervals_into_buffer (source=0x37d1070, position=1,
      length=48, buffer=0x1024d000, inherit=0) at intervals.c:1736
  #3  0x01112c1d in replace_range (from=1, to=26, new=270803377, prepare=1,
      inherit=0, markers=1) at insdel.c:1432
  #4  0x01103c7f in Freplace_match (newtext=270803377, fixedcase=52525106,
      literal=52525106, string=52525082, subexp=52525082) at search.c:2770
  #5  0x01038331 in Ffuncall (nargs=4, args=0x82e6b0) at eval.c:2990
  #6  0x011266a6 in exec_byte_code (bytestr=58343857, vector=269975813,
      maxdepth=44, args_template=52525082, nargs=0, args=0x0) at bytecode.c:785
  #7  0x010390b5 in funcall_lambda (fun=53514373, nargs=0, arg_vector=0x82e924)
      at eval.c:3205
  #8  0x01038550 in Ffuncall (nargs=1, args=0x82e920) at eval.c:3023
  #9  0x011266a6 in exec_byte_code (bytestr=270077793, vector=58106885,
      maxdepth=24, args_template=52525082, nargs=0, args=0x0) at bytecode.c:785
  #10 0x010390b5 in funcall_lambda (fun=55985541, nargs=2, arg_vector=0x82eb8c)
      at eval.c:3205
  #11 0x01038550 in Ffuncall (nargs=3, args=0x82eb88) at eval.c:3023
  #12 0x011266a6 in exec_byte_code (bytestr=55581537, vector=54480389,
      maxdepth=24, args_template=52525082, nargs=0, args=0x0) at bytecode.c:785
  #13 0x010390b5 in funcall_lambda (fun=53556101, nargs=2, arg_vector=0x82ede4)
      at eval.c:3205
  #14 0x01038550 in Ffuncall (nargs=3, args=0x82ede0) at eval.c:3023
  #15 0x011266a6 in exec_byte_code (bytestr=270077793, vector=58106885,
      maxdepth=24, args_template=52525082, nargs=0, args=0x0) at bytecode.c:785
  #16 0x010390b5 in funcall_lambda (fun=55985541, nargs=31, arg_vector=0x82f044)
      at eval.c:3205
  #17 0x01038550 in Ffuncall (nargs=32, args=0x82f040) at eval.c:3023
  #18 0x011266a6 in exec_byte_code (bytestr=55160593, vector=270183429,
      maxdepth=132, args_template=52525082, nargs=0, args=0x0) at bytecode.c:785
  #19 0x010390b5 in funcall_lambda (fun=55874341, nargs=1, arg_vector=0x82f364)
      at eval.c:3205
  #20 0x01038550 in Ffuncall (nargs=2, args=0x82f360) at eval.c:3023
  #21 0x011256d2 in Fcall_interactively (function=53737122,
      record_flag=52525082, keys=52546309) at callint.c:859
  #22 0x01038229 in Ffuncall (nargs=2, args=0x82f610) at eval.c:2981
  #23 0x011266a6 in exec_byte_code (bytestr=270064417, vector=58107397,
      maxdepth=64, args_template=52525082, nargs=0, args=0x0) at bytecode.c:785
  #24 0x010390b5 in funcall_lambda (fun=55986053, nargs=1, arg_vector=0x82f8e4)
      at eval.c:3205
  #25 0x01038550 in Ffuncall (nargs=2, args=0x82f8e0) at eval.c:3023
  #26 0x011256d2 in Fcall_interactively (function=53702258,
      record_flag=52525082, keys=52546309) at callint.c:859
  #27 0x01038229 in Ffuncall (nargs=4, args=0x82fb80) at eval.c:2981
  #28 0x010376c4 in call3 (fn=52645226, arg1=53702258, arg2=52525082,
      arg3=52525082) at eval.c:2774
  #29 0x0102018a in Fcommand_execute (cmd=53702258, record_flag=52525082,
      keys=52525082, special=52525082) at keyboard.c:10292
  #30 0x01006424 in command_loop_1 () at keyboard.c:1570
  #31 0x01033e8a in internal_condition_case (bfun=0x100548f <command_loop_1>,
      handlers=52582810, hfun=0x1004cb9 <cmd_error>) at eval.c:1499
  #32 0x010050f5 in command_loop_2 (ignore=52525082) at keyboard.c:1158
  #33 0x0103384a in internal_catch (tag=52580834,
      func=0x10050d2 <command_loop_2>, arg=52525082) at eval.c:1256
  #34 0x010050ad in command_loop () at keyboard.c:1137
  #35 0x01004677 in recursive_edit_1 () at keyboard.c:757
  #36 0x01004999 in Frecursive_edit () at keyboard.c:821
  #37 0x010027c3 in main (argc=2, argv=0xa32790) at emacs.c:1707

  Lisp Backtrace:
  "replace-match" (0x82e6b4)
  "org-export-normalize-links" (0x82e924)
  "org-export-preprocess-string" (0x82eb8c)
  "org-footnote-normalize" (0x82ede4)
  "org-export-preprocess-string" (0x82f044)
  "org-export-as-latex" (0x82f364)
  "call-interactively" (0x82f614)
  "org-export" (0x82f8e4)
  "call-interactively" (0x82fb84)
  (gdb) up
  #1  0x01043c8e in die (
      msg=0x15f8b84 "assertion failed: (tree) != 0 && (tree)->up_obj == 0",
      file=0x15f8640 "intervals.c", line=1736) at alloc.c:6316
  6316      abort ();
  (gdb) up
  #2  0x012ebe79 in graft_intervals_into_buffer (source=0x37d1070, position=1,
      length=48, buffer=0x1024d000, inherit=0) at intervals.c:1736
  1736          BUF_INTERVALS (buffer) = reproduce_tree (source, INTERVAL_PARENT (tree));
  (gdb) l
  1731        /* If the buffer contains only the new string, but
  1732           there was already some interval tree there, then it may be
  1733           some zero length intervals.  Eventually, do something clever
  1734           about inserting properly.  For now, just waste the old intervals.
    */
  1735        {
  1736          BUF_INTERVALS (buffer) = reproduce_tree (source, INTERVAL_PARENT (
  tree));
  1737          BUF_INTERVALS (buffer)->position = BEG;
  1738          BUF_INTERVALS (buffer)->up_obj = 1;
  1739          /* Explicitly free the old tree here.  */
  1740
  (gdb) p tree
  $1 = (INTERVAL) 0x1023d0a8
  (gdb) p *$
  $2 = {
    total_length = 48,
    position = 3,
    left = 0x101db3d4,
    right = 0x1023d0fc,
    up = {
      interval = 0x1024d005,
      obj = 270848005
    },
    up_obj = 1,
    gcmarkbit = 0,
    write_protect = 0,
    visible = 0,
    front_sticky = 0,
    rear_sticky = 0,
    plist = 269970294
  }
  (gdb) p tree->up_obj
  $3 = 1
  (gdb)

But INTERVAL_PARENT wants up_obj to be zero:

  #define INTERVAL_PARENT(i) \
     (eassert ((i) != 0 && (i)->up_obj == 0),(i)->up.interval)

bug#10071: 24.0.91; Emacs runtime crashes while exporting an org file

[Jambunathan K]

Ccing Nicolas to attract his attention.

Refer http://debbugs.gnu.org/cgi/bugreport.cgi?bug=10071 
-- 

bug#10071: 24.0.91; Emacs runtime crashes while exporting an org file

[Nicolas Goaziou]

Hello,

Jambunathan K <kjambunathan@gmail.com> writes:

> Ccing Nicolas to attract his attention.
>
> Refer http://debbugs.gnu.org/cgi/bugreport.cgi?bug=10071 

I cannot reproduce it on development version of Org mode (nor in stable
version), GNU Emacs 24.0.91.1 (x86_64-unknown-linux-gnu, GTK+ Version
3.2.1).

Jambunathan, can you debug `org-export-normalize-links' before Emacs
crashes?


Regards,

-- 
Nicolas Goaziou

bug#10071: 24.0.91; Emacs runtime crashes while exporting an org file

[Jambunathan K]

Eli, Thanks for the clue and Stefan, thanks for the fix meanwhile. The
minimal snippet that captures the root cause follows down below.

Nicolas Goaziou <n.goaziou@gmail.com> writes:
> Hello,
>
> Jambunathan K <kjambunathan@gmail.com> writes:
>
>> Ccing Nicolas to attract his attention.
>>
>> Refer http://debbugs.gnu.org/cgi/bugreport.cgi?bug=10071 
>
> I cannot reproduce it on development version of Org mode (nor in stable
> version), GNU Emacs 24.0.91.1 (x86_64-unknown-linux-gnu, GTK+ Version
> 3.2.1).
>
> Jambunathan, can you debug `org-export-normalize-links' before Emacs
> crashes?



#+begin_src emacs-lisp
;; install blah in the run-time
(defun blah () 
  (goto-char (point-min))
  (while (re-search-forward
	  "\\[\\[\\([^][]+\\)\\]\\(\\[\\([^][]+\\)\\]\\)?\\]" nil t)
    (goto-char (1- (match-end 0)))
    (org-if-unprotected
     (let* ((xx (match-string 1))
	    (s (concat "[[" xx "][" xx "]]")))
       (replace-match s t t)))))
#+end_src


;; eval the 3 forms in sequence. Note that the third form will crash
;; emacs

#+begin_src emacs-lisp
;; form 1
;; here link < buffer
;; link *is* decorated
(with-temp-buffer
  ;; (insert "[[http://www.google.com]]")
  (insert "[[http://www.google.com]]a")	; Note the extra "a" at the
					; end
  (add-text-properties (point-min) (point-max)
  		       '(org-caption nil org-caption-shortn nil
  				     org-label nil org-attributes nil))
  (blah))
#+end_src


#+begin_src emacs-lisp
;; form 2
;; here link = buffer
;; link is *not* decorated
(with-temp-buffer
  (insert "[[http://www.google.com]]")
  ;; (insert "[[http://www.google.com]]a")
  
  ;; (add-text-properties (point-min) (point-max)
  ;; 		       '(org-caption nil org-caption-shortn nil
  ;; 				     org-label nil org-attributes nil))

  (blah))
#+end_src


#+begin_src emacs-lisp
;; form 3
;; here link = buffer
;; link *is* decorated
(with-temp-buffer
  (insert "[[http://www.google.com]]")
  ;; (insert "[[http://www.google.com]]a")
  (add-text-properties (point-min) (point-max)
  		       '(org-caption nil org-caption-shortn nil
  				     org-label nil org-attributes nil))
  (blah))
#+end_src



> Regards,

bug#10071: 24.0.91; Emacs runtime crashes while exporting an org file

[Stefan Monnier]

> 24.0.91; Emacs runtime crashes while exporting with org-latex

> 1. Start Emacs with -Q
> 2. Open the attached .org file
> 3. C-c C-e l (l as in latex)
> 4. See that Emacs crashes

Hmm... I installed an "obvious" patch which seems to fix it.
It seems too easy, and makes me wonder why this problem waited so many
years before showing up.


        Stefan