FIX: Compiling VB5 Applications with Large UDTs May CrashLast reviewed: December 19, 1997Article ID: Q171557 |
The information in this article applies to:
SYMPTOMSCompiling a project in Visual Basic 5.0 or compiling a project in Visual Basic 5.0 converted from Visual Basic 4.0, may cause an error similar to the following:
"The instruction at "0x77f64d07" referenced memory at "0x0013fff8. The memory could not be read. Click on OK to terminate the application"Clicking OK terminates Visual Basic 5.0.
CAUSEDoing Put/Get on large records that contain records, VBA fails when writing out the GetPut descriptor. A common trait of the UDTs that cause the error is that these UDTs often contain arrays of other UDTs. For example:
Type MyType x as integer y as integer End Type Type MyType2 a as string b(6) as Mytype End TypeOther UDTs suspected of causing the error contained 15 or more elements.
RESOLUTIONThe only sure workaround is to use smaller records.
STATUSMicrosoft has confirmed this to be a bug in the Microsoft products listed at the beginning of this article. This bug has been fixed in Visual Studio 97 Service Pack 2. For more information on the Visual Studio 97 Service Pack 2, please see the following article in the Microsoft Knowledge Base:
ARTICLE-ID: Q170365 TITLE : INFO: Visual Studio 97 Service Packs - What, Where, and WhyFor a list of the Visual Basic 5.0 bugs that were fixed in the Visual Studio 97 Service Pack 2, please see the following article in the Microsoft Knowledge Base:
ARTICLE-ID: Q171554 TITLE : INFO: Visual Basic 5.0 Fixes in Visual Studio 97 Service Pack 2 MORE INFORMATIONThe UDT must be very large to cause this problem. However, it is not strictly size but the types of the members as well. The exact record size limit is unknown. Keywords : kbprg VS97FixlistSP2 VB5FixlistSP2 VS97FixlistSP3 Technology : kbvba Version : WINDOWS:5.0 Platform : WINDOWS Issue type : kbbug Solution Type : kbfix kbservicepack |
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