bugGNU Octave - Bugs: bug #39273, lu SIGSEGV when used with 2...


bug #39273: lu SIGSEGV when used with 2 output variables with --enable-64

Submitter:  None
Submitted:  Tue 18 Jun 2013 05:35:26 AM UTC
Category:  Octave Function Severity:  3 - Normal
Priority:  5 - Normal Item Group:  Segfault, Bus Error, etc.
Status:  Works For Me Assigned to:  None
Originator Name:  Erich Originator Email:  -email is unavailable-
Open/Closed:  * Closed Release:  * dev
Operating System:  * GNU/Linux Fixed Release:  None
Planned Release:  None
* Mandatory Fields

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Mon 20 Jan 2014 03:12:10 AM UTC, comment #2: 

No response from bug reporter in over 6 months, closing as "works for me".

Mike Miller <mtmiller>
Group Member
Tue 03 Dec 2013 08:06:57 PM UTC, comment #1: 

--enable-64 works for me.

Are you sure you've compiled blas, arpack, lapack, qrupdate, and suitesparse libraries properly and that your copy of Octave was built to use them as explained in the following section of the Octave manual?


John W. Eaton <jwe>
Group administrator
Tue 18 Jun 2013 05:35:26 AM UTC, original submission:  

Hello  !
At first, thank you for your work!

I am compiling octave with --enable-64
this is the first bug which prevents that
 make check

Ciau Erich

 [l u]=lu(rand(3))

Program received signal SIGSEGV, Segmentation fault.
base_lu<Matrix>::getp (this=0x7fffffffcbb0) at numeric/base-lu.cc:138
138                   octave_idx_type tmp = pvt.xelem (k);

(gdb) backtrace
#0  base_lu<Matrix>::getp (this=0x7fffffffcbb0) at numeric/base-lu.cc:138
#1  0x00007ffff5e9f5f1 in base_lu<Matrix>::P (this=<optimized out>)
    at numeric/base-lu.cc:154
#2  0x00007ffff7a89508 in Flu (args=..., nargout=2) at corefcn/lu.cc:423
#3  0x00007ffff75944c9 in octave_builtin::do_multi_index_op (this=0x709ae0,
    nargout=2, args=..., lvalue_list=0x7fffffffd4b0)
    at octave-value/ov-builtin.cc:131
#4  0x00007ffff7594186 in octave_builtin::subsref (this=0x709ae0, type="(",
Python Exception <type 'exceptions.IndexError'> list index out of range:
    idx=std::list, nargout=2, lvalue_list=0x7fffffffd4b0)
    at octave-value/ov-builtin.cc:64
#5  0x00007ffff7644826 in octave_value::subsref (this=<optimized out>,
    type=..., idx=..., nargout=<optimized out>, lvalue_list=<optimized out>)
    at octave-value/ov.cc:1278
#6  0x00007ffff76afe8e in tree_index_expression::rvalue (this=<optimized out>,
    nargout=2, lvalue_list=0x7fffffffd4b0) at parse-tree/pt-idx.cc:414
#7  0x00007ffff769f8d8 in tree_multi_assignment::rvalue (this=0x786530)
    at parse-tree/pt-assign.cc:371
#8  0x00007ffff769ef59 in tree_multi_assignment::rvalue1 (this=0x786530,
    nargout=0) at parse-tree/pt-assign.cc:326
#9  0x00007ffff76a7f1d in tree_evaluator::visit_statement (
    this=0x7ffff7ff5a88 <std_evaluator>, stmt=...) at parse-tree/pt-eval.cc:747
#10 0x00007ffff76a79b1 in visit_statement_list (lst=...,
    this=0x7ffff7ff5a88 <std_evaluator>) at parse-tree/pt-eval.cc:797
---Type <return> to continue, or q <return> to quit---
#11 tree_evaluator::visit_statement_list (this=0x7ffff7ff5a88 <std_evaluator>,
    lst=...) at parse-tree/pt-eval.cc:778
#12 0x00007ffff79ba224 in main_loop () at interpfcn/toplev.cc:573
#13 0x00007ffff7284543 in octave_execute_interpreter () at octave.cc:1015
#14 0x0000003655221a05 in __libc_start_main () from /lib64/libc.so.6
#15 0x0000000000400b01 in _start ()



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  • -email is unavailable- added by mtmiller (Posted a comment)
  • -email is unavailable- added by jwe (Posted a comment)

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    Follow 2 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2014-01-20 mtmiller Open/ClosedOpen Closed
    2013-12-03 jwe StatusNone Works For Me

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