DOCUMENT:Q191671 24-AUG-1999 [foxpro] TITLE :FIX: Calling AINSTANCE in Loop Causes Memory Leak PRODUCT :Microsoft FoxPro PROD/VER:WINDOWS:5.0,5.0a OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Visual FoxPro for Windows, versions 5.0, 5.0a ------------------------------------------------------------------------------- SYMPTOMS ======== Repeatedly calling the AINSTANCE function cause a memory leak in Visual FoxPro 5.0x. STATUS ====== Microsoft has confirmed this to be a bug in the Microsoft products listed at the beginning of this article. This bug has been corrected in Visual FoxPro 6.0. MORE INFORMATION ================ Each iteration of the AINSTANCE() function causes a 276 byte memory leak in user object memory as measured by SYS(1016). Steps to Reproduce Behavior --------------------------- Create a program containing the following code and run the program: CLEAR SET TALK OFF ox=CREATEOBJECT("form") ox.ADDOBJECT("command1","commandbutton") ox.SHOW ACTIVATE SCREEN FOR i=1 TO 100 =AINSTANCE(ss,"form") ? SYS(1016) ENDFOR Additional query words: kbVFp500abug kbOOP kbfvp600fix ====================================================================== Keywords : Technology : kbVFPsearch kbAudDeveloper kbVFP500 kbVFP500a Version : WINDOWS:5.0,5.0a Issue type : kbbug Solution Type : kbfix ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 1999.