[Quantlib-dev] Error calling xlfGetDef Excel API function from Objecthandler's FunctionCall::callerName()

[Slava M. <Sla...@ro...>]

Greetings,

Has anyone experienced such a behavior? It happens intermittently for
some spreadsheets in some circumstances and I cannot figure out why. 
Also I couldn't find any details about xlfGetDef function.
If anyone knows could you please point me to?

Here are some details.  

The following function call inside FunctionCall::callerName() returns 
xName->xltype = 16 meaning error:

Excel(xlfGetDef, &xName, 1, FunctionCall::instance().callerAddress());

The function returns an empty string in such a case. This may result in
duplicate object keys defined in different cells, which is totally
undesirable. So my questions are:

1. Does anyone know why the function fails?
2. Why ObjectHandler doesn't handle a possible error condition?
3. Wouldn't it better to return FunctionCall::instance().callerAddress()
instead of an empty string in such a case?

Thanks,

Slava Mazur