[Rcpp-devel] Warnings in build of RcppArmadillo project

[Simon Zehnder]

Hi Romain,

thanks for the fast reply! So nothing to worry about. taking flags "-Wunused-local-typedefs" away from compilation should let the warnings vanish from output?


Best

Simon

On Jun 5, 2013, at 4:30 PM, Romain Francois <romain at r-enthusiasts.com> wrote:

> 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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