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

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

Thanks Luigi,

I submitted a PR to fix this at
https://github.com/lballabio/QuantLib/pull/1267 .

Francois Botha


On Thu, 16 Dec 2021 at 13:44, Luigi Ballabio <lui...@gm...>
wrote:

> 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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>