/* POSIX says that <sys/types.h> must be included (by the caller) before
   <regex.h>.  */
   
#if !defined _POSIX_C_SOURCE && !defined _POSIX_SOURCE && defined VMS
/* VMS doesn't have `size_t' in <sys/types.h>, even though POSIX says it
   should be there.  */
# include <stddef.h>
#endif

# include <stddef.h>