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Q279140: FIX: ALINES() Leaks Memory Handle with Empty String

Article: Q279140
Product(s): Microsoft FoxPro
Version(s): 6.0
Operating System(s): 
Keyword(s): kbvfp600 kbXBase kbDSupport kbCodeSnippet kbVS600sp5 kbVS600sp5fix
Last Modified: 25-JUL-2001

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

- Microsoft Visual FoxPro for Windows, version 6.0 
-------------------------------------------------------------------------------

SYMPTOMS
========

When you call the ALINES function with an empty string, Visual FoxPro 6.0
increments the number of memory handles by one.

STATUS
======

Microsoft has confirmed this to be a bug in the Microsoft products listed at the
beginning of this article. This bug was corrected in the latest service pack for
Visual Studio 6.0.

For additional information about Visual Studio service packs, click the article
numbers below to view the articles in the Microsoft Knowledge Base:

  Q194022 INFO: Visual Studio 6.0 Service Packs, What, Where, Why

  Q194295 HOWTO: Tell That a Visual Studio Service Pack Is Installed

You can download the latest Visual Studio service pack from the following
Microsoft Web site:

  Visual Studio Product Updates
  (http://msdn.microsoft.com/vstudio/downloads/updates.asp)

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

Steps to Reproduce Behavior
---------------------------

Run the following code from a program (.prg) file:

  Local lni
  For lni = 1 to 10
  	local array laTest[1]
  	=alines(laTest, '')
  	_Calcmem = lni  && store counter to survive clear all
  	Clear all
   	?SYS(1011), int(_calcmem)
  	Local lni
  	lni = _calcmem
  Endfor
  RETURN

After the code runs, two numbers appear. The first column indicates the memory
handles as reported by SYS(1011). The second number indicates the iteration of
the loop. Note that Visual FoxPro adds one handle per iteration.

Additional query words:

======================================================================
Keywords          : kbvfp600 kbXBase kbDSupport kbCodeSnippet kbVS600sp5 kbVS600sp5fix 
Technology        : kbVFPsearch kbAudDeveloper kbVFP600
Version           : :6.0
Issue type        : kbbug
Solution Type     : kbfix

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