On Thu, 6 Nov 2025, Iris Simmons wrote:
Hi,
I see Rf_lazy_duplicate was placed on the list of non-API C functions.
That is not quite right. Rf_lazy_duplicate was never in the API. Using
it in a package has been producing a NOTE in R CMD check for a while;
that NOTE has now been upgraded to a WARNING.
Is there going to be a replacement, or some alternative? None is
mentioned in Writing R Extensions.
It has been essentially a no-op since the change to reference counting
several years ago. So Rf_lazy_duplicate(x) is now essentially the same
as x.
Best,
luke
Thanks,
Iris
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Luke Tierney
Ralph E. Wareham Professor of Mathematical Sciences
University of Iowa Phone: 319-335-3386
Department of Statistics and Fax: 319-335-3017
Actuarial Science
241 Schaeffer Hall email: [email protected]
Iowa City, IA 52242 WWW: http://www.stat.uiowa.edu/
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