+++ /dev/null
---- waitpid.c.orig 2009-11-07 14:51:38.000000000 -0800
-+++ waitpid.c 2009-11-07 14:51:40.000000000 -0800
-@@ -40,10 +40,31 @@ __FBSDID("$FreeBSD: src/lib/libc/gen/wai
- #include <sys/resource.h>
- #include "un-namespace.h"
-
-+#if __DARWIN_UNIX03
-+#include <errno.h>
-+#endif /* __DARWIN_UNIX03 */
-+#ifdef VARIANT_CANCELABLE
-+int __wait4(pid_t, int *, int , struct rusage *);
-+#else /* !VARIANT_CANCELABLE */
-+int __wait4_nocancel(pid_t, int *, int , struct rusage *);
-+#endif /* VARIANT_CANCELABLE */
-+
- pid_t
- __waitpid(pid_t pid, int *istat, int options)
- {
-- return (_wait4(pid, istat, options, (struct rusage *)0));
-+#if __DARWIN_UNIX03
-+ /* POSIX: Validate waitpid() options before calling wait4() */
-+ if ((options & (WCONTINUED | WNOHANG | WUNTRACED)) != options) {
-+ errno = EINVAL;
-+ return ((pid_t)-1);
-+ }
-+#endif /* __DARWIN_UNIX03 */
-+
-+#ifdef VARIANT_CANCELABLE
-+ return (__wait4(pid, istat, options, (struct rusage *)0));
-+#else /* !VARIANT_CANCELABLE */
-+ return (__wait4_nocancel(pid, istat, options, (struct rusage *)0));
-+#endif /* VARIANT_CANCELABLE */
- }
-
- __weak_reference(__waitpid, waitpid);