[Rd] help with rchk warnings on Rf_eval(Rf_lang2(...))

[Dirk Eddelbuettel]

On 24 March 2020 at 07:19, Dirk Eddelbuettel wrote:
| On 24 March 2020 at 11:39, Lionel Henry wrote:
| | > Shield<SEXP> res(Rcpp_fast_eval(Rf_lang2(asEnvironmentSym, x), R_GlobalEnv));
| | 
| | The call should be protected before evaluation though. So more like:
| | 
| | Shield<SEXP> call(Rf_lang2(asEnvironmentSym, x));
| | return Rcpp_fast_eval(call, R_GlobalEnv);
| 
| Good catch.

Fixed in https://github.com/RcppCore/Rcpp/pull/1059 along with another
instance from further down in the same file.

Thanks to Romain and Lionel for spotting this.

Dirk

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