[Rcpp-devel] Problem passing Armadillo objects back to R

The issue is that when calling wrap it creates an unprotected SEXP, and
Rcpp is not responsible for these. If the programmer passes an
unprotected SEXP to ::create, it is his responsability to protect it.

Just to clarify -- in the case of a naive user who's not protecting
objects: a single wrap as the last call in a function is one case that
will *always* work as expected, correct? And when using more than one
wrap, later ones can *potentially* but not necessarily clobber earlier
ones, yes?

thanks,
-christian

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