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Q140516: FIX: Storing Array Elements Causes GP Fault

Article: Q140516
Product(s): Microsoft FoxPro
Version(s): WINDOWS:3.0
Operating System(s): 
Keyword(s): kbbuglist kbfixlist
Last Modified: 24-MAR-2000

-------------------------------------------------------------------------------
The information in this article applies to:

- Microsoft Visual FoxPro for Windows, version 3.0 
-------------------------------------------------------------------------------

SYMPTOMS
========

Running the CLEAR ALL command in the Command window results in an error such
as:

  Use of Unallocated Handle

  -or-

  This program has performed an illegal operation and will be shut down.

CAUSE
=====

It is likely that you have used the STORE command to assign values to an array.

WORKAROUND
==========

Instead of using the STORE command to assign values to your array, use the
assignment operator (=).

STATUS
======

Microsoft has confirmed this to be a problem in the Microsoft products listed at
the beginning of this article. This problem was corrected in Visual FoxPro
version 3.0b for Windows.

MORE INFORMATION
================

Steps to Reproduce Problem
--------------------------

1. Run the following code:

     -=-=-=-=-=-=-=-=-=-=-=-=
          BEGIN CODE
     -=-=-=-=-=-=-=-=-=-=-=-=
     PUBLIC yy
     yy = CREATEOBJECT("cc")
     RETURN

     DEFINE CLASS cc AS Custom
     DIMENSION ee(1)
     DIMENSION bb(1)

     PROCEDURE Whatever
     LOCAL ltemp

     DO FORM C:\VFP\TEST NAME ltemp LINKED

     *-- Use the following two lines to demonstrate the error.
     STORE ltemp TO THIS.bb(1)
     STORE ltemp TO THIS.ee(1)

     *-- Use the following two lines to demonstrate the workaround.
     * THIS.bb(1) = ltemp
     * THIS.ee(1) = ltemp

     ENDPROC
     ENDDEFINE
     -=-=-=-=-=-=-=-=-=-=-=-=
       END CODE
     -=-=-=-=-=-=-=-=-=-=-=-=

2. In the Command window, enter the following line of code:

     yy.Whatever()

3. In the Command window, enter the following line of code:

     CLEAR ALL

To work around the problem, change the STORE lines into comments and change the
lines that use the assignment operator into executed lines to see the
workaround.

Additional query words: VFoxWin buglist3.00 fixlist3.00b

======================================================================
Keywords          :  kbbuglist kbfixlist
Technology        : kbVFPsearch kbAudDeveloper kbVFP300
Version           : WINDOWS:3.0
Issue type        : kbbug
Solution Type     : kbfix

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