FIX: Unbalanced Parentheses in IF Condition Not Seen by Parser

ID: Q135384

3.00 3.00b 2.60a | 2.60a

WINDOWS          | MS-DOS

The information in this article applies to:

• Microsoft Visual FoxPro for Windows, versions 3.0, 3.0b
• Microsoft FoxPro for Windows, version 2.6a
• Microsoft FoxPro for MS-DOS, version 2.6a

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"

   ?"false"

KBCategory: kbprg kbbuglist kbfixlist KBSubcategory: FxprgGeneral VFoxWin buglist3.00 buglist3.00b fixlist5.00 Additional reference words: 3.00 3.00b

Keywords          : kbVFp kbVFp300bbug kbVFp500fix buglist3.00 FxprgGeneral kbbuglist kbfixlist
Version           : 3.00 3.00b 2.60a | 2.60a
Platform          : MS-DOS WINDOWS
Solution Type     : kbfix