Re: [Quantlib-dev] Obsolete constructor call in HistoricalForwardRatesAnalysis

[Luigi B. <lui...@gm...>]

It might be that it's a template which is never actually instantiated.
It's probably not used in any tests.

Luigi


On Thu, Dec 16, 2021 at 12:19 PM Francois Botha <ig...@gm...> wrote:

> 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
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