Dear Dan, dear oce team,

Your CRAN package oce uses Rcpp, and is affected if we add a definition of STRICT_R_HEADERS as we would like to do. Please see the discussion at RcppCore/Rcpp#1158 and the links therein for more context on this.

Here, instead of prefixing each #include <Rcpp.h> with STRICT_R_HEADERS we define it in src/Makevars* for a more minimal changeset (I think I personally prefer it in each file) . The actual change that is a simple prefix of R_ for Calloc, Realloc, and Free (see Section 6.1.2 in Writing R Extensions).

It would be lovely if you could apply this. There is no strong urgency: we aim to get this done over all affected packages in the space of a few months. If you apply it, would you mind dropping me a note by email or swinging by RcppCore/Rcpp#1158 to confirm?

Many thanks for your help, and I hope you continue to find Rcpp helpful. Please don't hesitate to ask if you have any questions.