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From: Robert Pluim <rpluim@gmail.com>
To: Pip Cet <pipcet@gmail.com>
Cc: 36649@debbugs.gnu.org, Paul Eggert <eggert@cs.ucla.edu>
Subject: bug#36649: 27.0.50; pure space and pdumper
Date: Sun, 21 Jul 2019 21:12:06 +0200	[thread overview]
Message-ID: <m2o91nmcc9.fsf@gmail.com> (raw)
In-Reply-To: <CAOqdjBfPvNKc2fj=0nUxZ8VsDH_h+dkFnQd_srOpUxWPjvs+WQ@mail.gmail.com> (Pip Cet's message of "Sun, 21 Jul 2019 18:07:43 +0000")

>>>>> On Sun, 21 Jul 2019 18:07:43 +0000, Pip Cet <pipcet@gmail.com> said:
    Pip> I'm not sure about debugging on macOS, but can you get a full
    Pip> backtrace, or a core dump, or both? We're particularly interested in
    Pip> what "i" is in mark_vectorlike.

You want a lisp backtrace? I can always run under gdb if needed. As to
'i':

(lldb) up
frame #1: 0x000000010016dbec temacs`mark_object(arg=<unavailable>) at alloc.c:6082 [opt]
   6079	      {
   6080		struct Lisp_Symbol *ptr = XSYMBOL (obj);
   6081	      nextsym:
-> 6082	        if (symbol_marked_p (ptr))
   6083	          break;
   6084	        CHECK_ALLOCATED_AND_LIVE_SYMBOL ();
   6085	        set_symbol_marked(ptr);
(lldb)
frame #2: 0x000000010016f2aa temacs`mark_vectorlike(header=0x0000000101803200) at alloc.c:5666:5 [opt]
   5663	     The distinction is used e.g. by Lisp_Process which places extra
   5664	     non-Lisp_Object fields at the end of the structure...  */
   5665	  for (i = 0; i < size; i++) /* ...and then mark its elements.  */
-> 5666	    mark_object (ptr->contents[i]);
   5667	}
   5668
   5669	/* Like mark_vectorlike but optimized for char-tables (and
(lldb) p i
(ptrdiff_t) $0 = 0
(lldb) p ptr->contents
error: incomplete type 'Lisp_Object []' where a complete type is required
(lldb) p ptr->contents[0]
(Lisp_Object) $1 = 0x0008040000080400

    Pip> Otherwise, the attached patch should produce (probably a lot of)
    Pip> information, the last lines of which would be interesting...

Since you broke Robert's Second Rule of printf debugging, I stuck an
extra 'mark ' on the front of the fprintf in 'mark_vectorlike' :-)

0x10320c9e0 nil
0x10320c9e0 nil
0x10320c9e0 nil
0x10321ab70 z-group
0x10320c9e0 nil
0x10321a6f0 x-frame-parameter
0x10320ca40 unbound
0x10321aba0 zero-width
0x10320c9e0 nil
0x10320c9e0 nil
0x10320ca40 unbound
mark 0
make[1]: *** [bootstrap-emacs.pdmp] Segmentation fault: 11
make: *** [src] Error 2






  reply	other threads:[~2019-07-21 19:12 UTC|newest]

Thread overview: 125+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-07-14 14:26 bug#36649: 27.0.50; pure space and pdumper Pip Cet
2019-07-21  7:28 ` Paul Eggert
2019-07-21 12:53   ` Pip Cet
2019-07-21 13:44     ` Robert Pluim
2019-07-21 14:36       ` Pip Cet
2019-07-21 15:06         ` Robert Pluim
2019-07-21 17:43           ` Pip Cet
2019-07-21 17:56             ` Robert Pluim
2019-07-21 18:07               ` Pip Cet
2019-07-21 19:12                 ` Robert Pluim [this message]
2019-07-21 19:35                   ` Pip Cet
2019-07-21 20:20                     ` Robert Pluim
2019-07-22  3:58                       ` Pip Cet
2019-07-22  8:14                         ` Robert Pluim
2019-07-22 14:30                           ` Eli Zaretskii
2019-07-22 15:46                             ` Robert Pluim
2019-07-22 15:03                           ` Pip Cet
2019-07-22 18:45                             ` Robert Pluim
2020-08-21 12:51                               ` Lars Ingebrigtsen
2020-08-21 13:04                                 ` Pip Cet
2020-08-21 13:47                                   ` Eli Zaretskii
2020-08-21 15:26                                     ` Andreas Schwab
2020-08-21 21:41                                     ` Paul Eggert
2020-08-22  3:51                                     ` Richard Stallman
2020-08-22  8:55                                     ` Pip Cet
2020-08-22  9:59                                       ` Andreas Schwab
2020-08-28 12:32                                         ` Pip Cet
2020-08-28 14:24                                           ` Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors
2020-11-15 15:19                                           ` Stefan Kangas
2021-03-03 15:34                                             ` Pip Cet
2021-03-04 12:55                                               ` Pip Cet
2021-03-04 14:56                                                 ` Robert Pluim
2021-03-04 15:49                                                   ` Eli Zaretskii
2021-03-04 16:42                                                     ` Robert Pluim
2021-03-04 17:07                                                       ` Eli Zaretskii
2021-03-04 17:18                                                         ` Robert Pluim
2021-03-04 16:53                                                     ` martin rudalics
2021-03-04 17:45                                                     ` Andy Moreton
2021-03-04 21:52                                                   ` Paul Eggert
2021-03-05  3:00                                                     ` Pip Cet
2021-03-05  7:20                                                       ` Eli Zaretskii
2021-03-14 22:19                                                       ` Stefan Monnier
2021-05-12 14:50                                                         ` Lars Ingebrigtsen
2021-05-12 15:01                                                           ` Eli Zaretskii
2021-05-12 17:03                                                             ` Lars Ingebrigtsen
2021-05-12 17:06                                                               ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-05-12 17:11                                                                 ` Lars Ingebrigtsen
2021-05-12 17:28                                                                   ` Eli Zaretskii
2021-05-12 17:32                                                                     ` Lars Ingebrigtsen
2021-05-12 17:42                                                                       ` Eli Zaretskii
2021-05-12 17:58                                                                         ` Lars Ingebrigtsen
2021-05-12 18:25                                                                           ` Lars Ingebrigtsen
2021-05-12 18:37                                                                             ` Eli Zaretskii
2021-05-12 18:48                                                                               ` Lars Ingebrigtsen
2021-05-12 18:52                                                                                 ` Eli Zaretskii
2021-05-12 19:07                                                                                   ` Lars Ingebrigtsen
2021-05-12 19:12                                                                                     ` Eli Zaretskii
2021-05-12 19:44                                                                                       ` Lars Ingebrigtsen
2021-05-13 14:44                                                                                         ` Pip Cet
2021-05-13 21:23                                                                                           ` Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-05-14  6:26                                                                                             ` Eli Zaretskii
2021-05-14  6:35                                                                                               ` Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-05-14  7:07                                                                                                 ` Eli Zaretskii
2021-05-16 13:46                                                                                             ` Lars Ingebrigtsen
2021-05-13 14:08                                                                                   ` Eli Zaretskii
2021-05-16 13:38                                                                                     ` Lars Ingebrigtsen
2021-05-17  8:43                                                                                       ` Paul Eggert
2021-05-17 10:25                                                                                         ` Eli Zaretskii
2021-05-17 14:15                                                                                           ` Lars Ingebrigtsen
2021-05-17 14:23                                                                                             ` Eli Zaretskii
2021-05-19 15:11                                                                                               ` Eli Zaretskii
2021-05-19 17:29                                                                                                 ` Paul Eggert
2021-05-19 17:38                                                                                                   ` Eli Zaretskii
2021-05-19 17:43                                                                                                     ` Paul Eggert
2021-05-20  8:46                                                                                                       ` Eli Zaretskii
2021-05-19 18:55                                                                                                 ` Lars Ingebrigtsen
2021-05-17 14:32                                                                                             ` Andreas Schwab
2021-05-18 13:33                                                                                               ` Lars Ingebrigtsen
2021-10-20 17:41                                                                                           ` Stefan Kangas
2021-10-20 18:18                                                                                             ` Eli Zaretskii
2021-05-17 14:13                                                                                         ` Lars Ingebrigtsen
2021-05-12 19:12                                                                           ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-05-12 18:02                                                                       ` Paul Eggert
2021-05-12 17:37                                                                     ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-05-12 17:44                                                                       ` Eli Zaretskii
2021-05-12 19:07                                                                         ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-05-12 19:17                                                                           ` Eli Zaretskii
2021-05-12 17:19                                                                 ` Eli Zaretskii
2021-05-12 17:10                                                               ` Eli Zaretskii
2021-05-12 17:24                                                                 ` Lars Ingebrigtsen
2020-08-22 17:36                                       ` Paul Eggert
2019-07-21 18:14               ` Eli Zaretskii
2022-07-01 13:46 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-07-01 15:51   ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-07-01 16:03     ` Eli Zaretskii
2022-07-01 16:33       ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-07-01 18:12         ` Eli Zaretskii
2022-07-01 18:58           ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-07-02  8:55             ` Pip Cet
2022-07-02  9:06               ` Eli Zaretskii
2022-07-02  9:16                 ` Lars Ingebrigtsen
2022-07-02  9:22                   ` Eli Zaretskii
2022-07-02 10:30                     ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-07-02 10:41                       ` Eli Zaretskii
2022-07-02 10:51                         ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-07-02 12:07                           ` Lars Ingebrigtsen
2022-07-02 12:22                             ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-07-02 12:41                               ` Lars Ingebrigtsen
2022-07-02 12:45                                 ` Eli Zaretskii
2022-07-02 17:23                                   ` Lars Ingebrigtsen
2022-07-02 17:31                                     ` Eli Zaretskii
2022-07-02 16:57                     ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-07-02 17:11                       ` Eli Zaretskii
2022-07-02 18:03                         ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-07-02 18:32                           ` Eli Zaretskii
2022-07-02 10:28                   ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-07-02 10:32                     ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-07-02 10:40                     ` Eli Zaretskii
2022-07-02 10:55                       ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-07-03  7:14 ` Gerd Möllmann
2022-07-03  7:42   ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-07-03  8:21     ` Gerd Möllmann
2022-07-03  9:38       ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-07-03  9:42         ` Gerd Möllmann
2022-07-03 10:01           ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors

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