New warnings from -Wconversion -Wno-sign-conversion

[eddelbuettel]

Prof Ripley emailed the following in a messaging concerning the earlier R_NO_MAP issue (that is apparently defered for a bit at CRAN, we did our bit here, he pointed me also to another issue in another package of mine now taken care of):

A couple of other warnings I noted whilst compiler logs for CRAN
packages scrolled by:

/Users/ripley/R/Library/Rcpp/include/Rcpp/sugar/functions/sample.h:369:17: 
warning: implicit conversion loses integer precision: 'R_xlen_t' (aka 
'long') to 'int' [-Wshorten-64-to-32]

/Users/ripley/R/Library/Rcpp/include/Rcpp/internal/export.h:114:9: 
warning: implicit conversion loses integer precision: 'R_xlen_t' (aka 
'long') to 'uword' (aka 'unsigned int') [-Wshorten-64-to-32]

(That's from clang with -Wconversion -Wno-sign-conversion.)

[eddelbuettel]

I am actually not sure I can reproduce these with clang++-17, at least not from building Rcpp. uword hints at RcppArmadillo but it could also be any one of 1100+ packages using it. Uggh.

[Enchufa2]

I assume you asked Prof. Ripley for more details. :) In the meantime, I found this for the second one via Google search, nothing for the first one.