[Rcpp-devel] Warnings in build of RcppArmadillo project

[Romain Francois]

Most of these are in fact happening in armadillo's code base.

Le 05/06/13 16:23, Simon Zehnder a écrit :
> Hi Rcpp-Users and Rcpp-Devels,
>
> I just build an RcppArmadillo project on my computer using gcc-4.8.1 and the newest Version of RcppArmadillo. I got some warnings I cannot explain to myself. It builds the library and installs it. Nevertheless I would like to know more about my warnings:
>
> In file included from /Library/Frameworks/R.framework/Versions/3.0/Resources/library/RcppArmadillo/include/armadillo:397:0,
>                   from /Library/Frameworks/R.framework/Versions/3.0/Resources/library/RcppArmadillo/include/RcppArmadilloForward.h:36,
>                   from /Library/Frameworks/R.framework/Versions/3.0/Resources/library/RcppArmadillo/include/RcppArmadillo.h:29,
>                   from FinmixModel.cc:14:
> /Library/Frameworks/R.framework/Versions/3.0/Resources/library/RcppArmadillo/include/armadillo_bits/fn_as_scalar.hpp: In static member function ‘static typename T1::elem_type arma::as_scalar_redirect<N>::apply(const T1&)’:
> /Library/Frameworks/R.framework/Versions/3.0/Resources/library/RcppArmadillo/include/armadillo_bits/fn_as_scalar.hpp:48:34: warning: typedef ‘eT’ locally defined but not used [-Wunused-local-typedefs]
>     typedef typename T1::elem_type eT;
>                                    ^
> /Library/Frameworks/R.framework/Versions/3.0/Resources/library/RcppArmadillo/include/armadillo_bits/fn_as_scalar.hpp: In function ‘typename T1::elem_type arma::as_scalar(const arma::Base<typename T1::elem_type, T1>&)’:
> /Library/Frameworks/R.framework/Versions/3.0/Resources/library/RcppArmadillo/include/armadillo_bits/fn_as_scalar.hpp:320:34: warning: typedef ‘eT’ locally defined but not used [-Wunused-local-typedefs]
>     typedef typename T1::elem_type eT;
>                                    ^
> In file included from /Library/Frameworks/R.framework/Versions/3.0/Resources/library/RcppArmadillo/include/armadillo:397:0,
>                   from /Library/Frameworks/R.framework/Versions/3.0/Resources/library/RcppArmadillo/include/RcppArmadilloForward.h:36,
>                   from /Library/Frameworks/R.framework/Versions/3.0/Resources/library/RcppArmadillo/include/RcppArmadillo.h:29,
>                   from FinmixModel.cc:14:
> /Library/Frameworks/R.framework/Versions/3.0/Resources/library/RcppArmadillo/include/armadillo_bits/fn_as_scalar.hpp: In function ‘typename T1::elem_type arma::as_scalar(const arma::BaseCube<typename T1::elem_type, T1>&)’:
> /Library/Frameworks/R.framework/Versions/3.0/Resources/library/RcppArmadillo/include/armadillo_bits/fn_as_scalar.hpp:384:34: warning: typedef ‘eT’ locally defined but not used [-Wunused-local-typedefs]
>     typedef typename T1::elem_type eT;
>                                    ^
> In file included from /Library/Frameworks/R.framework/Versions/3.0/Resources/library/Rcpp/include/Rcpp/Module.h:352:0,
>                   from /Library/Frameworks/R.framework/Versions/3.0/Resources/library/Rcpp/include/Rcpp.h:63,
>                   from /Library/Frameworks/R.framework/Versions/3.0/Resources/library/RcppArmadillo/include/RcppArmadillo.h:30,
>                   from FinmixModel.cc:14:
> /Library/Frameworks/R.framework/Versions/3.0/Resources/library/Rcpp/include/Rcpp/module/class.h: In member function ‘Rcpp::class_<Class>::self& Rcpp::class_<Class>::derives(const char*)’:
> /Library/Frameworks/R.framework/Versions/3.0/Resources/library/Rcpp/include/Rcpp/module/class.h:495:56: warning: typedef ‘parent_prop_class’ locally defined but not used [-Wunused-local-typedefs]
>               typedef typename parent_class_::prop_class parent_prop_class ;

This one I just fixed in rev 4331.

> The FinmixModel class looks like:
>
> HEADER:
> #include <RcppArmadillo.h>
> // [[Rcpp::depends(RcppArmadillo)]]
>
> #include <string>
>
> class FinmixModel {
>
>          public:
>                  Rcpp::List parList;
>                  arma::rowvec weightV;
>                  arma::uvec tV;
>
>                  bool indicFix;
>                  unsigned int K;
>                  unsigned int r;
>
>                  /* ctor */
>                  FinmixModel(const Rcpp::S4& classS4);
>                  /* dtor */
>                  ~FinmixModel();
> };
>
> CC:
> #include <RcppArmadillo.h>
> #include "FinmixModel.h"
>
> FinmixModel::FinmixModel(const Rcpp::S4& classS4) {
>
>          /**
>           * As the parameters 'par' can have very differing implementations
>           * they are kept in a general Rcpp::List object which is then
>           * decomposed in main code.
>           *
>           */
>          parList  = classS4.slot("par");
>          weightV  = Rcpp::as<arma::mat>(classS4.slot("weight"));
>
>          /**
>           * 'T' can be 'NA' if the model has no repetitions (Binomial)
>           * in this case this attribute is set to an 1 x 1 vector
>           *
>           */
>          tV       = Rcpp::as<arma::uvec>(classS4.slot("T"));
>          indicFix = Rcpp::as<bool>(classS4.slot("indicfix"));
>          K        = Rcpp::as<unsigned int>(classS4.slot("K"));
>          r        = Rcpp::as<unsigned int>(classS4.slot("r"));
> }
>
> FinmixModel::~FinmixModel(){}
>
>>From looking into the files RcppArmadilloForward.h, fn_as_scalar.hpp and class.h it seems that there is something about typedefs, but I am not sure. It seems to me just not right, that all these warnings occur in my build output.
>
>
> Best
>
> Simon


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Romain Francois
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