Microsoft KB Archive/35885

= LONG INTEGER Overflow Is Not Detected in EXE =

Article ID: 35885

Article Last Modified on 11/21/2006

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APPLIES TO


 * Microsoft QuickBasic 4.0
 * Microsoft QuickBASIC 4.0b
 * Microsoft QuickBasic 4.5 for MS-DOS
 * Microsoft BASIC Compiler 6.0
 * Microsoft BASIC Compiler 6.0b
 * Microsoft BASIC Professional Development System 7.0
 * Microsoft BASIC Professional Development System 7.1

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This article was previously published under Q35885



SYMPTOMS
The program below, when run in the QB.EXE or QBX.EXE editor, correctly generates an &quot;Overflow&quot; message. However, the EXE program incorrectly prints a -2 (even when compiled with the /D (debug) option).



STATUS
Microsoft has confirmed this to be a bug in QuickBasic versions 4.00, 4.00b, and 4.50; in Microsoft Basic Compiler versions 6.00 and 6.00b (buglist6.00, buglist6.00b) for MS-DOS and MS OS/2; and in Microsoft Basic Professional Development System (PDS) versions 7.00 and 7.10 (buglist7.00, buglist7.10) for MS-DOS and MS OS/2. We are researching this problem and will post new information here in the Microsoft Knowledge Base as it becomes available.



MORE INFORMATION
The following is a code example: a& = 2147483647    ' Largest positive long integer b& = 2 x& = a& * b&  PRINT x&            ' EXE version prints a -2

Additional query words: QuickBas BasicCom buglist4.00 buglist4.00b buglist4.50 B_BasicCom

Keywords: KB35885

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