[Octave-bug-tracker] [bug #51599] Anonymous functions that reference local functions within classdef files don't work

[Piotr Held]

URL:
  <http://savannah.gnu.org/bugs/?51599>

                 Summary: Anonymous functions that reference local functions
within classdef files don't work
                 Project: GNU Octave
            Submitted by: jsoh425
            Submitted on: Fri 28 Jul 2017 12:45:12 AM UTC
                Category: Interpreter
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Incorrect Result
                  Status: None
             Assigned to: None
         Originator Name: Piotr Held
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: dev
        Operating System: Any

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Details:

If you create an anonymous function within a class method that references a
local function the anonymous function will fail when executed. Even when
called from within another class method.

So with the following code:

classdef local_classdef_anon_fcn < handle
  properties
    anon_fcn;
  end
  methods
    function foo (self)
      self.anon_fcn = @(x) my_helper(x+1);
    end
    function ret = bar (self, val)
      ret = self.anon_fcn (val);
    end
  end
end

function ret = my_helper (val)
  ret = val + 1;
end


When you call bar, the interpreter will not return with error:

'my_helper' undefined near line 7 column 30
-verbatim

I am attaching a test case for this problem.
If you were to simply reference 'my_helper' in any of the methods the code
would work correctly.




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File Attachments:


-------------------------------------------------------
Date: Fri 28 Jul 2017 12:45:12 AM UTC  Name: local_classdef_anon_fcn.m  Size:
418B   By: jsoh425

<http://savannah.gnu.org/bugs/download.php?file_id=41364>

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