bugGNU Octave - Bugs: bug #51532, Function in '+' package argument...


bug #51532: Function in '+' package argument lookup fails

Submitted by:  Piotr Held <jsoh425>
Submitted on:  Fri 21 Jul 2017 11:26:23 PM UTC  
Category:  Interpreter Severity:  4 - Important
Priority:  5 - Normal Item Group:  Regression
Status:  Fixed Assigned to:  None
Originator Name:  Piotr Held Open/Closed:  Closed
Release:  dev Operating System:  Any

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( Jump to the original submission)

Mon 07 Aug 2017 11:58:52 PM UTC, comment #8: 

I made some tweaks and checked the change in here (http://hg.savannah.gnu.org/hgweb/octave/rev/6e0fd7e3c262).  Thanks for finding and fixing this issue.

Rik <rik5>
Project Administrator
Mon 07 Aug 2017 10:08:05 PM UTC, comment #7: 

Sorry about that. Wasn't working on a clean copy when I made the changes. I applied the changes to a clean copy and tested it. Should be good now.

(file #41450)

Piotr Held <jsoh425>
Mon 07 Aug 2017 09:30:50 PM UTC, comment #6: 

@Piotr: Could you refresh your patch against a current development tip?  I tried to apply the patch and the code in pt-eval.cc was rejected by diff.

Rik <rik5>
Project Administrator
Sat 05 Aug 2017 01:28:54 AM UTC, comment #5: 

Similarly to the recently added 'is_classdef_meta()' method I added a method 'is_package()' to octave_value, octave_base_value and octave_classdef_meta. It returns true if the cdef_classdef_meta object underlying octave_classdef_meta is a package.

I added some more commentary in pt-eval.cc:1347 and changed that area of code so that the the '+' package is not indexed.

I added a test for this problem in /test.

(file #41419)

Piotr Held <jsoh425>
Fri 04 Aug 2017 08:44:15 PM UTC, comment #4: 

I'm sorry about the confusion, it doesn't work. I'll try to work on a proper (nonhack) patch out quickly.

Piotr Held <jsoh425>
Fri 04 Aug 2017 08:39:32 PM UTC, comment #3: 

Currently (cset: 01899bdd2a3a) this functionality works.

Piotr Held <jsoh425>
Mon 24 Jul 2017 06:51:19 PM UTC, comment #2: 

Just for clarity this bug is a direct result of the solution to Bug #51192.

I am attaching a hack to make my tests pass and a proof-of-concept. However, I do not believe this is the proper implementation.

The way the hack works is it asks the interpreter (the one defined 'globally') what the load_path is and the asks the load_path whether a package that has the name: 'expr-&amp;gt;name()' exists. If yes then 'indexing_object = false'.

I do not exactly know how this should be implemented actually.
Should there be some code like meta.package in Matlab?

(file #41319)

Piotr Held <jsoh425>
Fri 21 Jul 2017 11:34:16 PM UTC, comment #1: 

Sorry about that.

When calling a function from a +package with arguments


you get:

error: can't perform indexing operations for user-defined
function type

The problem seems to be linked to libinterp/parse-tree/pt-eval.cc:1346 in changeset 23781:d891b6a16a4d. When indexing_object is set to false during runtime the error does not occur.

It seems that the is_classdef_meta() is too broad of a check.

I attached in previous post a test for the problem.

Piotr Held <jsoh425>
Fri 21 Jul 2017 11:26:23 PM UTC, original submission:  

When calling

Piotr Held <jsoh425>


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Attach Files:

Attached Files
file #41450:  patch_bug51532.diff added by jsoh425 (5KiB - text/x-patch)
file #41419:  proper_patch.diff added by jsoh425 (5KiB - text/x-patch)
file #41319:  hack.diff added by jsoh425 (981B - text/x-patch - Hack of the bug, not an actual solution)
file #41284:  Package_Test.tar.gz added by jsoh425 (224B - application/gzip - The test that fails with this issue.)


Depends on the following items: None found

Items that depend on this one: None found


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  • -email is unavailable- added by rik5 (Posted a comment)
  • -email is unavailable- added by mtmiller (Updated the item)
  • -email is unavailable- added by jsoh425 (Submitted the item)

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    Follow 8 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2017-08-07 rik5 StatusConfirmed => Fixed
        Open/ClosedOpen => Closed
    2017-08-07 jsoh425 Attached File- => Added patch_bug51532.diff, #41450
    2017-08-05 jsoh425 Attached File- => Added proper_patch.diff, #41419
    2017-07-24 jsoh425 Attached File- => Added hack.diff, #41319
    2017-07-24 mtmiller Severity3 - Normal => 4 - Important
        StatusNone => Confirmed
    2017-07-21 jsoh425 Attached File- => Added Package_Test.tar.gz, #41284

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