[Rd] winbuilder warning message wrt function pointers

[William Dunlap]

Try changing
  static void (*fun)() = NULL;
to
  DL_FUNC fun = NULL;

Bill Dunlap
TIBCO Software
wdunlap tibco.com

On Fri, Dec 29, 2017 at 5:14 AM, Therneau, Terry M., Ph.D. <
therneau at mayo.edu> wrote:

> I've recently updated the coxme package, which calls internal routines
> from the bdsmatrix package.  (It is in fact mentioned as an example of this
> in the Extensions manual.)
> The call connections are a blocks like this, one for each of the 9 called
> C routines.
>
> void bdsmatrix_prod4(int nrow,    int nblock,   int *bsize,
>                     double *bmat, double *rmat,
>                     int nfrail,   double *y) {
>     static void (*fun)() = NULL;
>     if (fun==NULL)
>     fun = (void (*)) R_GetCCallable("bdsmatrix", "bdsmatrix_prod4");
>     fun(nrow, nblock, bsize, bmat, rmat, nfrail, y);
>     }
>
> ..
>
> The winbuilder run is flagging all of these with
>
> bdsmatrix_stub.h:22:6: warning: ISO C forbids assignment between function
> pointer and 'void *' [-Wpedantic]
>   fun = (void (*)) R_GetCCallable("bdsmatrix", "bdsmatrix_prod4");
>
> Ignore?  Or should these lines have been written in a different way?
>
> Terry T.
>
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