"Division By Zero" Dynamic, Fixed-Length STRING*1, 64K+ Array (38069)

The information in this article applies to:

Microsoft QuickBASIC 4.0
Microsoft QuickBASIC 4.0b
Microsoft QuickBASIC 4.5
Microsoft BASIC Compiler for MS-DOS and OS/2 6.0
Microsoft BASIC Compiler for MS-DOS and OS/2 6.0b

This article was previously published under Q38069

SYMPTOMS

A DIM statement gives the following error at run time when you dimension a dynamic, fixed-length STRING*1 array 64K or larger (which requires compiling with the /AH option):

"Division by zero"

STATUS

Microsoft has confirmed this to be a bug in QuickBasic Versions 4.00, 4.00b, and 4.50 and in Microsoft Basic Compiler Versions 6.00 and 6.00b for MS-DOS and MS OS/2 (buglist6.00, buglist6.00b). The "Division by zero" error occurs both in the QB.EXE editor and in a compiled .EXE program. This problem was corrected in Microsoft Basic PDS Version 7.00 (fixlist7.00).

This problem does not occur with static fixed-length STRING*1 arrays, or any static or dynamic array smaller than 64K.

MORE INFORMATION

The following is a code example:

' This program must be compiled with the /AH option.
' A static array (limited to 64K or smaller) is ok:
DIM darray(1 TO 4096, 1 TO 16) AS STRING * 1
REM $DYNAMIC
' A dynamic, STRING*1, 64K+ array gives "DIVISION BY ZERO" at run time:
DIM carray(1 TO 4096, 1 TO 16) AS STRING * 1

Modification Type:	Minor	Last Reviewed:	1/9/2003
Keywords:	KB38069