Knowledge Base

FIX: Unbalanced Parentheses in IF Condition Not Seen by Parser

Article ID: 135384

Article Last Modified on 12/3/2003

Microsoft Visual FoxPro 3.0 Standard Edition
Microsoft Visual FoxPro 3.0b Standard Edition
Microsoft FoxPro 2.6a Standard Edition
Microsoft FoxPro 2.6a Standard Edition

This article was previously published under Q135384

SYMPTOMS

You receive incorrect results from an IF...ENDIF when you have unbalanced parentheses in the logical expression or if the later part of the expression has a syntactical error and the beginning of the expression can be logically evaluated.

CAUSE

This is a compatibility issue. Anything that cannot be logically parsed in the expression is treated as a comment on the same line if at least some of the first part of the expression can be evaluated to a logical value.

STATUS

Microsoft has confirmed this to be a problem in the Microsoft products listed at the beginning of this article. This problem has been fixed in Visual FoxPro 5.0 for Windows.

MORE INFORMATION

Code to Reproduce Problem

IF (.F.)) OR (.T.)
   ?"true"
ELSE
   ?"false"
ENDIF

Additional query words: 3.00 3.00b

Keywords: kbbug kbfix kbvfp500fix KB135384