Re: [Texmacs-dev] RE: Texmacs segfault

[Alexander Isacson]

I too submitted a bugreport to gentoo about the build ignoring the
compilerflags. If you are interested you can read about it here.

http://bugs.gentoo.org/show_bug.cgi?id=8947

I did what they said and downloaded the static build form texmacs.org
and that works fine for me.

/Alexander Isacson
 
On Sun, 2002-10-13 at 00:59, Felix Breuer wrote:
> On Thu, 2002-10-10 at 23:35, Stéphane Payrard wrote:
> > 
> > I suggest commenting out the first three functions in basic.cc.  
> > Please tell us what result you do obtain by applying this suggestion.
> > 
> > I am doing stuff with Qt and gcc 3.2 and texmacs crashes immediately
> > without this commenting out. With regular texmacs, commenting out
> > results in a more stable texmacs. I am using Mandrake cooker but I
> > suspect this may be true on other platform using gcc 3.2.
> 
> Commenting out the first two, three or four functions in basic.cc made
> TeXmacs only more unstable. Under these conditions I got segfaults also
> when moving the cursor with the arrow keys. Using the custom new and
> delete operators from basic.cc TeXmacs crashed only when saving 
> (only when the file is actually written to the disk, and the changes
> *are* saved before the segfault occurs). I append a(nother) trace (see
> below). I also filed a bug report with the Gentoo distribution since
> this problem may well be ditro-specific.
> 
> Program received signal SIGSEGV, Segmentation fault.
> [Switching to Thread 1024 (LWP 11967)]
> 0x40306042 in chunk_free () from /lib/libc.so.6
> (gdb) where
> #0  0x40306042 in chunk_free () from /lib/libc.so.6
> #1  0x40308507 in free () from /lib/libc.so.6
> #2  0x080569a8 in operator delete (ptr=0x1) at Basic/Types/basic.cc:46
> #3  0x083ba4c3 in destroy_tree_rep (rep=0x403b8158) at
> Basic/Types/string.hh:26
> #4  0x083c60d1 in ~array_rep (this=0x8770124) at Basic/Data/tree.hh:159
> #5  0x083ba50f in destroy_tree_rep (rep=0x879036c) at
> Basic/Types/array.hh:42
> #6  0x083c60d1 in ~array_rep (this=0x876dc2c) at Basic/Data/tree.hh:159
> #7  0x083ba50f in destroy_tree_rep (rep=0x876dc0c) at
> Basic/Types/array.hh:42
> #8  0x084341c3 in tm_data_rep::save(string, tm_view_rep*)
> (this=0x403b44a0, name={rep = 0x0}, 
>     vw=0x87574c8) at Texmacs/Data/tm_file.cc:278
> #9  0x08434400 in tm_data_rep::save_buffer(string, string)
> (this=0x84c3f44, name={rep = 0x8742de8}, fm=
>       {rep = 0x8742de8}) at Basic/Types/string.hh:47
> #10 0x08284b90 in tmg_texmacs_save_buffer (arg1=-1073747296,
> arg2=-1073747280) at Texmacs/server.hh:173
> #11 0x4011c669 in scm_ceval () from /usr/lib/libguile.so.9
> #12 0x401265a5 in scm_eval_3 () from /usr/lib/libguile.so.9
> #13 0x40126761 in scm_eval_x () from /usr/lib/libguile.so.9
> #14 0x40156ab9 in scm_eval_string () from /usr/lib/libguile.so.9
> #15 0x4011c3b3 in scm_ceval () from /usr/lib/libguile.so.9
> #16 0x4011dc26 in scm_ceval () from /usr/lib/libguile.so.9
> #17 0x4011f5c4 in scm_apply () from /usr/lib/libguile.so.9
> #18 0x4015bbb8 in scm_body_thunk () from /usr/lib/libguile.so.9
> #19 0x4015b679 in scm_internal_catch () from /usr/lib/libguile.so.9
> #20 0x4015be0f in scm_catch () from /usr/lib/libguile.so.9
> #21 0x4011c689 in scm_ceval () from /usr/lib/libguile.so.9
> #22 0x401265a5 in scm_eval_3 () from /usr/lib/libguile.so.9
> #23 0x40126761 in scm_eval_x () from /usr/lib/libguile.so.9
> #24 0x40156a53 in scm_eval_0str () from /usr/lib/libguile.so.9
> #25 0x4012ce27 in gh_eval_str () from /usr/lib/libguile.so.9
> #26 0x08203a6b in eval_scheme_any (s={rep = 0x1}, address@hidden) at
> Guile/Scheme/evaluate.cc:91
> #27 0x08442387 in tm_scheme_rep::exec(string) (this=0x84c3f50, s={rep =
> 0x1})
>     at Basic/Types/string.hh:47
> #28 0x08442496 in tm_scheme_rep::exec(tree) (this=0x84c3f50, p=
>       {rep = 0x1, static init = <optimized out>}) at
> Basic/Data/tree.hh:157
> #29 0x08444bbf in virtual thunk to tm_scheme_rep::exec(tree) () at
> Texmacs/tm_scheme.hh:17
> #30 0x081462e7 in edit_main_rep::exec(tree) (this=0x10ec75ec, p=
>       {rep = 0x1, static init = <optimized out>}) at
> Basic/Data/tree.hh:157
> #31 0x08148622 in virtual thunk to edit_main_rep::exec(tree) ()
> #32 0x0813eb79 in edit_interface_rep::try_shortcut(string)
> (this=0x84e6aa4, comb={rep = 0x8481e04})
>     at Basic/Data/tree.hh:157
> #33 0x0813f847 in edit_interface_rep::key_press(string) (this=0x84e6aa4,
> key={rep = 0x8481e04})
>     at Basic/Types/string.hh:47
> #34 0x0814060c in
> edit_interface_rep::handle_keypress(event_ptr<keypress_event_rep>)
> (this=0x84e6aa4, 
>     ev={<event_ptr_base> = {rep = 0x1}, <No data fields>}) at
> Basic/Types/string.hh:47
> #35 0x08060579 in basic_widget_rep::handle(event) (this=0x84e6bf8,
> ev={rep = 0x8913f70})
>     at Window/Event/event_codes.hh:72
> #36 0x080555ec in attribute_widget_rep::handle(event) (this=0x84e6bf8,
> ev={rep = 0x8913f70})
>     at Window/event.hh:54
> #37 0x083f6678 in operator<< (w={rep = 0x8913f70}, ev={rep = 0x8913f70})
> at Window/widget.hh:55
> #38 0x0808c919 in canvas_widget_rep::handle(event) (this=0x1, ev={rep =
> 0x1}) at Window/widget.hh:55
> 
> 
> Regards,
> Felix.
> 
> 
> 
> 
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