Microsoft KB Archive/105140

= FIX: GPF in VB.EXE at 0038:3B6F w/ Compile-Time Error & Set =

Article ID: 105140

Article Last Modified on 10/28/2003

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APPLIES TO


 * Microsoft Visual Basic 3.0 Professional Edition
 * Microsoft Visual Basic 3.0 Professional Edition

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This article was previously published under Q105140



SYMPTOMS
When you try to run a program within the development environment, a general protection (GP) fault occurs immediately in module VB.EXE at 0038:3B6F.



CAUSE
The problem can occur when there is a compile-time error (such as a syntax error) followed by a Set statement where the left hand side of the Set is not a simple object variable. The compile-time error does not have to involve an object variable. Examples of object variables that are not simple are object arrays and nested OLE objects. Static a(10) As Form Set a(i) = Form1     ' setting an object array element

Static b As Object Set b = CreateObject(...) Set b.c = ... ' setting an object variable within an object



WORKAROUND
Find and correct the compile-time error. This takes some effort because the GP fault occurs before VB.EXE shows the location of the error. To narrow down the search for the statement causing the error, remove Set statements from your code until the GP fault no longer occurs. Then correct all compile-time errors, and put the Set statements back in.



STATUS
Microsoft has confirmed this to be a bug in the Microsoft products listed at the beginning of this article. This bug was corrected in Microsoft Visual Basic version 4.0 for Windows.



MORE INFORMATION
The following code reproduces the problem: Sub Form_Load Static a(0) As Form Print 1 >= "a"       ' type-mismatch error Set a(0) = Nothing End Sub

Additional query words: buglist3.00 fixlist4.00 3.00 UAE GPF

Keywords: kbbug kbfix KB105140

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