Re: gl-render.cc: framework OpenGL on MacOSX

[Thomas Treichl]

Ben Abbott schrieb:
> On Thursday, February 12, 2009, at 01:25PM, "Jonathan Stickel" <address@hidden> 
> wrote:
> > John W. Eaton wrote:
> > > On 12-Feb-2009, Jonathan Stickel wrote:
> > >
> > > | I can use the fltk backend to make graphs.  However, I see segfault 
> > > | every time I exit octave if I have initialized fltk:
> > > | 
> > > | $ octave-3.1.52+
> > > | GNU Octave, version 3.1.52+
> > > | Copyright (C) 2008 John W. Eaton and others.
> > > | This is free software; see the source code for copying conditions.
> > > | There is ABSOLUTELY NO WARRANTY; not even for MERCHANTABILITY or
> > > | FITNESS FOR A PARTICULAR PURPOSE.  For details, type `warranty'.
> > > | 
> > > | Octave was configured for "i386-apple-darwin8.11.1".
> > > | 
> > > | Additional information about Octave is available at http://www.octave.org.
> > > | 
> > > | Please contribute if you find this software useful.
> > > | For more information, visit http://www.octave.org/help-wanted.html
> > > | 
> > > | Report bugs to <address@hidden> (but first, please read
> > > | http://www.octave.org/bugs.html to learn how to write a helpful report).
> > > | 
> > > | For information about changes from previous versions, type `news'.
> > > | 
> > > | octave-3.1.52+:1> backend ('fltk')
> > > | octave-3.1.52+:2> exit
> > > | panic: Segmentation fault -- stopping myself...
> > > | attempting to save variables to `'...
> > > | 
> > > | ^C^CPress Control-C again to abort.
> > > | ^Cpanic: attempted clean up apparently failed -- aborting...
> > > | Abort trap
> > >
> > > Please try running Octave under a debugger and find out where this
> > > crash is happening.
> > >
> > > jwe
> > OK, here is what happens (thanks John Swenson for indicating how to do 
> > this):
> >
> >  $ ./run-octave -g
> > GNU gdb 6.3.50-20050815 (Apple version gdb-696) (Sat Oct 20 18:16:54 GMT 
> > 2007)
> > Copyright 2004 Free Software Foundation, Inc.
> > GDB is free software, covered by the GNU General Public License, and you are
> > welcome to change it and/or distribute copies of it under certain 
> > conditions.
> > Type "show copying" to see the conditions.
> > There is absolutely no warranty for GDB.  Type "show warranty" for details.
> > This GDB was configured as "i386-apple-darwin"...
> > warning: --arch option not supported in this gdb.
> > Reading symbols for shared libraries .................... done
> >
> > (gdb) run
> > Starting program: 
> > /Users/Shared/install/octave/dev-source/octave/build/src/octave 
> > --no-initial-path 
> > --path=/Users/Shared/install/octave/dev-source/octave/build/... (cut) 
> > --info-file=/Users/Shared/install/octave/dev-source/octave/build/doc/interpreter/octave.info
> > Reading symbols for shared libraries 
> > .......+++++........................................................+..+++..+ 
> > done
> > GNU Octave, version 3.1.52+
> > Copyright (C) 2008 John W. Eaton and others.
> > This is free software; see the source code for copying conditions.
> > There is ABSOLUTELY NO WARRANTY; not even for MERCHANTABILITY or
> > FITNESS FOR A PARTICULAR PURPOSE.  For details, type `warranty'.
> >
> > Octave was configured for "i386-apple-darwin8.11.1".
> >
> > Additional information about Octave is available at http://www.octave.org.
> >
> > Please contribute if you find this software useful.
> > For more information, visit http://www.octave.org/help-wanted.html
> >
> > Report bugs to <address@hidden> (but first, please read
> > http://www.octave.org/bugs.html to learn how to write a helpful report).
> >
> > For information about changes from previous versions, type `news'.
> >
> > Reading symbols for shared libraries . done
> > Reading symbols for shared libraries . done
> > octave:1> backend ('fltk')
> > Reading symbols for shared libraries .. done
> > octave:2> exit
> >
> > Program received signal EXC_BAD_ACCESS, Could not access memory.
> > Reason: KERN_INVALID_ADDRESS at address: 0x02f61b6c
> > 0x01745bff in graphics_backend::~graphics_backend ()
> > (gdb)
>
> I built with debugging on (-g) and have a bit more information.
>
> GNU Octave, version 3.1.52
> Copyright (C) 2008 John W. Eaton and others.
> This is free software; see the source code for copying conditions.
> There is ABSOLUTELY NO WARRANTY; not even for MERCHANTABILITY or
> FITNESS FOR A PARTICULAR PURPOSE.  For details, type `warranty'.
>
> Octave was configured for "i386-apple-darwin9.6.0".
>
> Additional information about Octave is available at http://www.octave.org.
>
> Please contribute if you find this software useful.
> For more information, visit http://www.octave.org/help-wanted.html
>
> Report bugs to <address@hidden> (but first, please read
> http://www.octave.org/bugs.html to learn how to write a helpful report).
>
> For information about changes from previous versions, type `news'.
>
> Reading symbols for shared libraries . done
> Reading symbols for shared libraries . done
> Reading symbols for shared libraries . done
> Reading symbols for shared libraries . done
> octave:1> backend ('fltk') 
> Reading symbols for shared libraries . done
> octave:2> Reading symbols for shared libraries ...... done
> exit
>
> Program received signal EXC_BAD_ACCESS, Could not access memory.
> Reason: KERN_INVALID_ADDRESS at address: 0x00ace42c
> 0x013745e7 in ~graphics_backend [inlined] () at graphics.h:1507
> 1507            delete rep;

Maybe we should also mention that the crash is not there if '__remove_fltk__' is 
called before exit:

  octave:1> backend ("fltk")
  octave:2> __remove_fltk__
  octave:3> exit
  bash$

And here is even more output from './run-octave -g' but I think I need some help 
 what I should do next if you need even more information about what is going on:

octave:1> backend ("fltk")
Reading symbols for shared libraries .... done
octave:2> exit

Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_INVALID_ADDRESS at address: 0x037c56ec
0x019109c1 in std::_Rb_tree<std::string, std::pair<std::string const, 
graphics_backend>, std::_Select1st<std::pair<std::string const, 
graphics_backend> >, std::less<std::string>, 
std::allocator<std::pair<std::string const, graphics_backend> > >::_M_erase 
(this=0x1d672c4, __x=0x63f2db0) at graphics.h:1507
1507            delete rep;

(gdb) where

#0  0x019109c1 in std::_Rb_tree<std::string, std::pair<std::string const, 
graphics_backend>, std::_Select1st<std::pair<std::string const, 
graphics_backend> >, std::less<std::string>, 
std::allocator<std::pair<std::string const, graphics_backend> > >::_M_erase 
(this=0x1d672c4, __x=0x63f2db0) at graphics.h:1507
#1  0x010ad03b in __tcf_10 () at stl_tree.h:570
#2  0x0100d5bd in cxa_atexit_wrapper ()
#3  0x9000ff21 in __cxa_finalize ()
#4  0x9000fe28 in exit ()
#5  0x012d5f43 in clean_up_and_exit (retval=0) at toplev.cc:637
#6  0x012d5fec in Fquit (address@hidden, nargout=0) at toplev.cc:665
#7  0x013939f9 in octave_builtin::do_multi_index_op (this=0x3877c4c, nargout=0, 
address@hidden) at ov-builtin.cc:107
#8  0x0137a6e7 in octave_value::do_multi_index_op (this=0x37c56e8, 
nargout=58480360, address@hidden) at ov.cc:1108
#9  0x015055e1 in tree_identifier::rvalue (this=0x653b260, nargout=0) at 
pt-id.cc:86
#10 0x015048a3 in tree_identifier::rvalue1 (this=0x653b260, nargout=58480360) at 
pt-id.cc:107
#11 0x01501a04 in tree_evaluator::visit_statement (this=0x1d670e0, 
address@hidden) at pt-eval.cc:693
#12 0x01520fc7 in tree_statement::accept (this=0x63dc010, address@hidden) at 
pt-stmt.cc:134
#13 0x014fc10c in tree_evaluator::visit_statement_list (this=0x1d670e0, 
address@hidden) at pt-eval.cc:729
#14 0x01521085 in tree_statement_list::accept (this=0x63dc010, address@hidden) at 
pt-stmt.cc:198
#15 0x012d47db in main_loop () at toplev.cc:559
#16 0x012781d9 in octave_main (argc=5, argv=0xbfffd9f4, embedded=0) at 
octave.cc:857
#17 0x00006a34 in main (argc=58480360, argv=0x37c56e8) at main.c:35
#18 0x000063a2 in _start ()
#19 0x000062c9 in start ()
Current language:  auto; currently c++
(gdb)

Best regards,

  Thomas