[Quantlib-dev] Obsolete constructor call in HistoricalForwardRatesAnalysis

[Francois B. <ig...@gm...>]

Hi,

After a recent query about QuantlibXL
<https://sourceforge.net/p/quantlib/mailman/message/37401063/>, I decided
to try to build it myself against Quantlib 1.23. However, before I could
even reach the relevant part of the query I noticed something else that
confuses me.

If I build Quantlib on its own (+ its test suite, but excluding examples),
the build completes without compile time errors.

But when I link QuantlibXL to Quantlib v1.23 then I get a compile time
error at
https://github.com/lballabio/QuantLib/blob/73e39d104693a959ecc38fa3d0c6ee7875cd2fc4/ql/models/marketmodels/historicalforwardratesanalysis.hpp#L134

You'll notice the line passes the Real accuracy parameter that has recently
moved to the Bootstrap object. So the compile time error makes sense to me.
However, I'm confused as to why the build passes when I'm building Quantlib
on its own, as historicalforwardratesanalysis.hpp is part of the Quantlib
project and I expected the compile error to occur there too.

Is this a C++ peculiarity where, if nothing links to the class, it is
optimised out and not actually compiled?

thanks
Francois Botha