Q297767: FIX: Strings Stored in MEM Files Limited To 64K

Article: Q297767
Product(s): Microsoft FoxPro
Version(s): 3.0,3.0b,5.0,5.0a,6.0
Operating System(s): 
Keyword(s): kbvfp300bBUG kbvfp300BUG kbvfp500aBUG kbvfp500bug kbvfp600bug kbGrpDSFox kbDSupport kbC
Last Modified: 20-SEP-2001

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The information in this article applies to:

- Microsoft Visual FoxPro for Windows, versions 3.0, 3.0b, 5.0, 5.0a, 6.0 
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SYMPTOMS
========

When you use the SAVE TO command to store a string larger than 64KB to a
variable save (.mem) file, you may receive an error message when you restore the
string.

STATUS
======

This problem was corrected in Microsoft Visual FoxPro version 7.0 for Windows.

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

To reproduce the problem, run the following code in Visual FoxPro (VFP).

  *!* Q297767: FIX: Strings Stored in MEM Files Limited To 64KB
  *!* This code demonstrates the problem.

  SET SAFETY OFF

  * First attempt with less than 64 KB.
  aTest = REPLICATE(" ", 65534)
  SAVE TO LongStr.MEM ALL LIKE aTest
  RESTORE FROM LongStr.MEM

  * Second attempt with more than 64 KB.
  aTest = REPLICATE(" ", 65536)
  SAVE TO LongStr.MEM ALL LIKE aTest
  RESTORE FROM LongStr.MEM

The first part of this code executes correctly in all versions of VFP, because
the string is under 64K.

When you run the second part of the code in VFP version 6.0, you receive the
following error message:

  Memory file is invalid.

Other versions of VFP produce slightly different messages.

If you replace the space in the REPLICATE function with an "A" in VFP 6.0, you
receive the following error message:

  Too many variables.

Additional query words:

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Keywords          : kbvfp300bBUG kbvfp300BUG kbvfp500aBUG kbvfp500bug kbvfp600bug kbGrpDSFox kbDSupport kbCodeSnippet 
Technology        : kbVFPsearch kbAudDeveloper kbVFP300 kbVFP300b kbVFP500 kbVFP600 kbVFP500a
Version           : :3.0,3.0b,5.0,5.0a,6.0
Issue type        : kbbug
Solution Type     : kbfix

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