bugGNU Octave - Bugs: bug #56157, Setting breakpoint in non-existent...

 
 

bug #56157: Setting breakpoint in non-existent subfunction now produces obtuse error

Submitter:  Rik <rik5>
Submitted:  Wed 17 Apr 2019 05:52:24 PM UTC
   
 
Category:  Interpreter Severity:  3 - Normal
Priority:  5 - Normal Item Group:  Regression
Status:  Fixed Assigned to:  None
Originator Name:  Open/Closed:  * Closed
Release:  * 5.1.0 Operating System:  * Any
Fixed Release:  None Planned Release:  None
* Mandatory Fields

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Wed 12 Jun 2019 05:07:15 PM UTC, comment #3: 

Aah, thanks.  It works again.  Since this was a regression between 4.4.1 and 5.1.0 I also backported it to stable.

Marking as fixed and closing report.

 Rik <rik5>
Group administrator
Wed 12 Jun 2019 01:49:54 PM UTC, comment #2: 

Rik:  Thanks for finding the error.  I pushed the following changeset:

http://hg.savannah.gnu.org/hgweb/octave/rev/f3450193272d

 John W. Eaton <jwe>
Group administrator
Wed 12 Jun 2019 04:58:59 AM UTC, comment #1: 

The problem is in tree_evaluator::get_user_code at the end of the function.  These lines are the problem. 

-verbatim-
        fcn = user_code->find_subfunction (subfuns);

        user_code = fcn.user_code_value ();


In the example given, subfuns contains "foo" as it should.  But find_subfunction() returns a nil_rep.  The next line then fails.

 Rik <rik5>
Group administrator
Wed 17 Apr 2019 05:52:24 PM UTC, original submission:  

To reproduce the problem use the attached goo.m


function goo
   hoo() ;
endfunction

function hoo
   disp('hoo') ;
endfunction


In Octave 4.4.1,


dbstop goo>foo
error: add_breakpoint: unable to find function 'goo>foo'


In Octave 5.1.0 (and devel branch)


dbstop goo>foo
error: octave_base_value::user_code_value(): wrong type argument '<unknown type>'




 Rik <rik5>
Group administrator

 

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Attached Files
file #46787:  goo.m added by rik5 (79B - text/x-matlab)

 

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    Follow 5 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2019-06-12 rik5 StatusReady For Test Fixed
        Open/ClosedOpen Closed
    2019-06-12 jwe StatusConfirmed Ready For Test
    2019-06-12 rik5 Carbon-Copy- Added jwe
    2019-04-17 rik5 Attached File- Added goo.m, #46787

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