* [XSI] The id_t and pid_t types shall be defined as described
* in <sys/types.h>
*/
-#ifndef _PID_T
-typedef __darwin_pid_t pid_t;
-#define _PID_T
-#endif
-
-#ifndef _ID_T
-typedef __darwin_id_t id_t;
-#define _ID_T
-#endif
+#include <sys/_types/_pid_t.h>
+#include <sys/_types/_id_t.h>
/*
* [XSI] The siginfo_t type shall be defined as described in <signal.h>