Arithmetic operation resulted in an overflow

Question

When i send:

Result = CInt(NetApiBufferFree(pBuffer))

I receive (SOME TIMES) this error:

Arithmetic operation resulted in an overflow.

What exactly means that? and how i can resolve it?

Answer 1

It means that CInt argument is out of range of Integer, -0x80000000 to 0x7FFFFFFF And it happens when NetApiBufferFree returns an error: error codes are bigger than 0x80000000.

There is no unsigned int32 type, so use CLng instead of CInt.

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About source of error. You should find out code of error which you get: call MsgBox or log it to file, or use breakpoint. Next find its description. If it won't help you (for example error would be E_FAIL), add code to check that pBuffer value is valid - that it wasn't modified by something, and wasn't already freed. Add logging for NetApiBuffer* calls.