bugGNU Octave - Bugs: bug #45503, Saved function handles may be...

 
 

bug #45503: Saved function handles may be incorrect

Submitter:  asherikov <asherikov>
Submitted:  Thu 09 Jul 2015 03:41:29 PM UTC
   
 
Category:  None Severity:  3 - Normal
Priority:  5 - Normal Item Group:  Incorrect Result
Status:  Duplicate Assigned to:  None
Originator Name:  Open/Closed:  * Closed
Release:  * 3.8.1 Operating System:  * BSD
Fixed Release:  None Planned Release:  None
* Mandatory Fields

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Thu 09 Jul 2015 05:16:09 PM UTC, comment #1: 

This is a known issue with saving function handles to subfunctions. Already reported as bug #36686, closing as a duplicate report.

Mike Miller <mtmiller>
Group Member
Thu 09 Jul 2015 03:41:29 PM UTC, original submission:  

If a script file contains many functions, they are not properly identified by their handles stored in a data file.


Example of a script file:
-----
function test_struct = testfcn()
    test_struct.some_function_handle = @some_function;
end

function a = some_function()
    a = true;
end
-----

It can be used as
-----
a = testfcn();
a.some_function_handle(); % returns 'true'
-----

However, after the structure 'a' was saved and loaded, the function handle is not restored properly
-----
save a.mat a;
load a.mat;
a.some_function_handle(); % now calls 'testfcn()' instead of 'some_function()'
-----

Contents of the data file:
-----
# name: a
# type: scalar struct
# ndims: 2
 1 1
# length: 1
# name: some_function_handle
# type: function handle
# octaveroot: /usr/local
# path: /usr/home/aleks/testfcn.m
some_function
-----

asherikov <asherikov>

 

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    Follow 3 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2015-07-09 mtmiller StatusNone Duplicate
        Open/ClosedOpen Closed
        Dependencies- Depends on bugs #36686

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