[Rd] R_ext/Altrep.h should be more C++-friendly

Gabe Becker becker@g@be @ending from gene@com
Tue Oct 9 17:00:08 CEST 2018


Thanks for reaching out. This was brought up by Romaine Francois offline to
me as well. What he does as a workaround is

#define class klass
extern "C" {
  #include <R_ext/Altrep.h>
#undef class

While we consider changing Altrep.h, the above should work for you  in the
immediate term.

Let me know if it doesn't.


On Mon, Oct 8, 2018 at 4:17 PM, Michael Sannella via R-devel <
r-devel using r-project.org> wrote:

> I am not able to #include "R_ext/Altrep.h" from a C++ file.  I think
> it needs two changes:
> 1. add the same __cplusplus check as most of the other header files:
>     #ifdef  __cplusplus
>     extern "C" {
>     #endif
>         ...
>     #ifdef  __cplusplus
>     }
>     #endif
> 2. change the line
>     R_new_altrep(R_altrep_class_t class, SEXP data1, SEXP data2);
>  to
>     R_new_altrep(R_altrep_class_t cls, SEXP data1, SEXP data2);
>  since C++ doesn't like an argument named 'class'
>   ~~ Michael Sannella
>         [[alternative HTML version deleted]]
> ______________________________________________
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> https://stat.ethz.ch/mailman/listinfo/r-devel

Gabriel Becker, Ph.D
Bioinformatics and Computational Biology
Genentech Research

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