bugGNU Octave - Bugs: bug #48911, octave hangs built by mxe-octave...


bug #48911: octave hangs built by mxe-octave on linux using gcc 5

Submitted by:  Tatsuro MATSUOKA <tmacchant>
Submitted on:  Fri 26 Aug 2016 06:13:13 AM UTC  
Category:  Interpreter Severity:  3 - Normal
Priority:  5 - Normal Item Group:  Segfault, Bus Error, etc.
Status:  Fixed Assigned to:  John Donoghue <lostbard>
Originator Name:  Tatsuro MATSUOKA Open/Closed:  Closed
Release:  dev Operating System:  GNU/Linux

Add a New Comment (Rich Markup)

You are not logged in

Please log in, so followups can be emailed to you.


( Jump to the original submission)

Tue 13 Sep 2016 05:27:24 AM UTC, comment #7: 

I have confirmed that changeset makes octave worked.

Tatsuro MATSUOKA <tmacchant>
Mon 12 Sep 2016 01:06:36 PM UTC, comment #6: 

As a side note, on a fedora VM, with GCC 6.1.1, my native mxe-octave builds octave was also crashing frequency when typing in the cli or gui.

With the 6.0 update it (so far) has not crashed.

John Donoghue <lostbard>
Project MemberIn charge of this item.
Mon 12 Sep 2016 01:03:36 PM UTC, comment #5: 
John Donoghue <lostbard>
Project MemberIn charge of this item.
Mon 12 Sep 2016 09:37:15 AM UTC, comment #4: 

John Donoghue
If you have time, please consider to apply the patch.
The patch is effective Ubunutu 16.04 (64bit) and 14.04 (32bit).

Tatsuro MATSUOKA <tmacchant>
Sat 27 Aug 2016 08:54:14 AM UTC, comment #3: 

Oops! octave for windows does not use ncurses.(termcap is used instead.)
Therefore version up of ncurses to 6.0 does not affect build for windows.

I attached a patch.

(file #38372)

Tatsuro MATSUOKA <tmacchant>
Sat 27 Aug 2016 06:40:31 AM UTC, comment #2: 

I tried to build ncurses-6.0 by mxe-octave using gcc-5.4.0.
This time octave does not crash.

I have to check whether change of ncurses version affects windows build.

Tatsuro MATSUOKA <tmacchant>
Sat 27 Aug 2016 06:10:04 AM UTC, comment #1: 

From the gdb information on the previous post, the crash seems to be related to libcursus built by mxe-octave using gcc-5.

At usr/bin directory on mxe-otave on linux using gcc-5,
I have executed:

LD_PRELOAD=/home/tatsu/work/octave/mxe-octave/mxe-octave-linux-dev-gcc493/usr/lib/libncurses.so ./octave-cli

GNU Octave, version 4.1.0+
Copyright (C) 2016 John W. Eaton and others.
This is free software; see the source code for copying conditions.
FITNESS FOR A PARTICULAR PURPOSE.  For details, type 'warranty'.

Octave was configured for "x86_64-pc-linux-gnu".

Octave started up without crash.


is libncurses.so built by mxe-octave using gcc-4.9.3.

Thus libncurses built by mxe-octave using gcc-5 is buggy.

In the src directory "ncurses-1-gcc-5-fix.patch" exists.
The patch seem to be well known for nurcus-5.9 :


I do not know the hang that I have met related to the patch.

Tatsuro MATSUOKA <tmacchant>
Fri 26 Aug 2016 06:13:13 AM UTC, original submission:  

Operating system GNU/Linux
Distribution Ubuntu  14.04 and 16.04
Octave version 4.0 and dev
gcc version 5

Using gcc 4.9.3, octave build by mxe octave works.

run gdb

(gdb) run
Starting program: /home/tatsu/work/octave/mxe-octave/mxe-octave-linux-dev/usr/bin/octave-cli
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7fffe9f9d700 (LWP 15712)]
[New Thread 0x7fffe979c700 (LWP 15713)]
[New Thread 0x7fffe4f9b700 (LWP 15714)]

Thread 1 "octave-cli" received signal SIGSEGV, Segmentation fault.
0x00007fffead31e79 in tputs_sp ()
   from /home/tatsu/work/octave/mxe-octave/mxe-octave-linux-dev/usr/lib/libncurses.so.5

Back trace

(gdb) bt
#0  0x00007fffead31e79 in tputs_sp ()
   from /home/tatsu/work/octave/mxe-octave/mxe-octave-linux-dev/usr/lib/libncurses.so.5
#1  0x00007fffead32346 in tputs ()
   from /home/tatsu/work/octave/mxe-octave/mxe-octave-linux-dev/usr/lib/libncurses.so.5
#2  0x00007fffef31a234 in _rl_enable_meta_key () at ../terminal.c:691
#3  0x00007fffef305c8a in readline_initialize_everything ()
    at ../readline.c:1101
#4  rl_initialize () at ../readline.c:968
#5  0x00007ffff66beb35 in octave_rl_initialize ()
    at /home/tatsu/work/octave/mxe-octave/mxe-octave-linux-dev/tmp-default-octave/octave-4.1.0+/liboctave/util/oct-rl-edit.c:447
#6  0x00007ffff668866d in octave::gnu_readline::gnu_readline (this=0x73fd60)
    at /home/tatsu/work/octave/mxe-octave/mxe-octave-linux-dev/tmp-default-octave/octave-4.1.0+/liboctave/util/cmd-edit.cc:254
#7  0x00007ffff668878b in octave::command_editor::make_command_editor ()
    at /home/tatsu/work/octave/mxe-octave/mxe-octave-linux-dev/tmp-default-octave/octave-4.1.0+/liboctave/util/cmd-edit.cc:1081
#8  0x00007ffff6689695 in octave::command_editor::instance_ok ()
    at /home/tatsu/work/octave/mxe-octave/mxe-octave-linux-dev/tmp-default-octave/octave-4.1.0+/liboctave/util/cmd-edit.cc:1064
#9  0x00007ffff6689759 in octave::command_editor::set_name (n="Octave")
---Type <return> to continue, or q <return> to quit---
    at /home/tatsu/work/octave/mxe-octave/mxe-octave-linux-dev/tmp-default-octave/octave-4.1.0+/liboctave/util/cmd-edit.cc:1158
#10 0x00007ffff7701bc0 in initialize_command_input ()
    at /home/tatsu/work/octave/mxe-octave/mxe-octave-linux-dev/tmp-default-octave/octave-4.1.0+/libinterp/corefcn/input.cc:557
#11 0x00007ffff770e2f9 in octave::interpreter::interpreter (this=0x642080,
    app_context=0x7fffffffde60, embedded=<optimized out>)
    at /home/tatsu/work/octave/mxe-octave/mxe-octave-linux-dev/tmp-default-octave/octave-4.1.0+/libinterp/corefcn/interpreter.cc:629
#12 0x00007ffff6e1d9a3 in octave::application::create_interpreter (
    at /home/tatsu/work/octave/mxe-octave/mxe-octave-linux-dev/tmp-default-octave/octave-4.1.0+/libinterp/octave.cc:377
#13 0x00007ffff6e1d8ea in octave::cli_application::execute (
    at /home/tatsu/work/octave/mxe-octave/mxe-octave-linux-dev/tmp-default-octave/octave-4.1.0+/libinterp/octave.cc:424
#14 0x0000000000401127 in main (argc=1, argv=0x7fffffffe0d8)
    at /home/tatsu/work/octave/mxe-octave/mxe-octave-linux-dev/tmp-default-octave/octave-4.1.0+/src/main-cli.cc:90

Tatsuro MATSUOKA <tmacchant>


(Note: upload size limit is set to 16384 kB, after insertion of the required escape characters.)

Attach Files:

Attached Files
file #38372:  ncurces_update.patch added by tmacchant (829B - text/x-patch)


Depends on the following items: None found

Items that depend on this one: None found


Carbon-Copy List
  • -email is unavailable- added by lostbard (Posted a comment)
  • -email is unavailable- added by tmacchant
  • -email is unavailable- added by tmacchant
  • -email is unavailable- added by tmacchant (Submitted the item)

    Do you think this task is very important?
    If so, you can add your encouragement to it.
    This task has 0 encouragements so far.

    Only project members can vote.




    Follow 7 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2016-09-13 lostbard StatusReady For Test => Fixed
        Open/ClosedOpen => Closed
    2016-09-12 lostbard StatusNone => Ready For Test
        Assigned toNone => lostbard
    2016-09-12 tmacchant Carbon-Copy- => Added john donoghue <john.david.donoghue@gmail.com>
    2016-08-27 tmacchant Attached File- => Added ncurces_update.patch, #38372
        Carbon-Copy- => Added johnd <john.david.donoghue@gmail.com>

    Back to the top

    Powered by Savane 3.5