Microsoft KB Archive/168525

= BUG: ESQL-C: Error "Division by Zero" During Precompilation =

PSS ID Number: 168525

Article Last Modified on 3/1/2005

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The information in this article applies to:


 * Microsoft Embedded SQL for C Programmer's Toolkit

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This article was previously published under Q168525



BUG #: 16858

BUG #: 50038 (SHILOH)



SYMPTOMS
While precompiling a C division expression, NSQLPREP may generate an "Integer division by zero" exception error. The 16-bit precompiler SQLPREP may generate the error "run-time error R6003 - integer divide by 0". This error may occur not only with integers, but with any numeric datatype (for example, float and so on).



WORKAROUND
To work around this problem, ensure that there is a character string variable assignment in the program, before the division expression.



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.



MORE INFORMATION
Other operators (such as +, -, and *) do not cause an exception error in NSQLPREP.

The following is a sample code fragment that will cause the ESQL-C precompiler to generate a division by zero exception:

int main (int argc, char** argv, char** envp) { int x;

EXEC SQL BEGIN DECLARE SECTION;

char o[3];

EXEC SQL END DECLARE SECTION;

x = 1; x = 1 / x;  // causes div/0

return (0); } /* end program */

The following sample code fragment will not cause the precompiler to generate an exception error because there is a character string variable assignment before the division expression:

int main (int argc, char** argv, char** envp) { int x; char string[] = ""; // character string assignment EXEC SQL BEGIN DECLARE SECTION; char o[3];

EXEC SQL END DECLARE SECTION; x = 1; x = 1 / x;  // works now return (0); } /* end program */

Keywords: kbBug kbProgramming KB168525

Technology: kbAudDeveloper kbSQLEmCPTKSearch kbSQLServSearch

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