Update.

	* posix/sys/wait.h: Handle definitions duplicated in stdlib.h
	correctly.
	* stdlib/stdlib.h: Handle definition of wait macros correctly.

1 files changed, 25 insertions, 27 deletions

diff --git a/stdlib/stdlib.h b/stdlib/stdlib.h
index 8857f35a20..604ab64f78 100644
--- a/stdlib/stdlib.h
+++ b/stdlib/stdlib.h
@@ -37,60 +37,58 @@ __BEGIN_DECLS
 #ifndef __need_malloc_and_calloc
 #define	_STDLIB_H	1
 
-#ifdef __USE_XOPEN
+#if defined __USE_XOPEN && !defined _SYS_WAIT_H
 /* XPG requires a few symbols from <sys/wait.h> being defined.  */
 # include <bits/waitflags.h>
 # include <bits/waitstatus.h>
 
-# ifndef WEXITSTATUS
-#  ifdef __USE_BSD
+# ifdef __USE_BSD
 
 /* Lots of hair to allow traditional BSD use of `union wait'
    as well as POSIX.1 use of `int' for the status word.  */
 
-#   if defined __GNUC__ && !defined __cplusplus
-#    define __WAIT_INT(status)						      \
+#  if defined __GNUC__ && !defined __cplusplus
+#   define __WAIT_INT(status)						      \
   (__extension__ ({ union { __typeof(status) __in; int __i; } __u;	      \
 		    __u.__in = (status); __u.__i; }))
-#   else
-#    define __WAIT_INT(status)	(*(int *) &(status))
-#   endif
+#  else
+#   define __WAIT_INT(status)	(*(int *) &(status))
+#  endif
 
 /* This is the type of the argument to `wait'.  The funky union
    causes redeclarations with ether `int *' or `union wait *' to be
    allowed without complaint.  __WAIT_STATUS_DEFN is the type used in
    the actual function definitions.  */
 
-#   if !defined __GNUC__ || __GNUC__ < 2 || defined __cplusplus
-#    define __WAIT_STATUS	void *
-#    define __WAIT_STATUS_DEFN	void *
-#   else
+#  if !defined __GNUC__ || __GNUC__ < 2 || defined __cplusplus
+#   define __WAIT_STATUS	void *
+#   define __WAIT_STATUS_DEFN	void *
+#  else
 /* This works in GCC 2.6.1 and later.  */
 typedef union
   {
     union wait *__uptr;
     int *__iptr;
   } __WAIT_STATUS __attribute__ ((__transparent_union__));
-#    define __WAIT_STATUS_DEFN	int *
-#   endif
+#   define __WAIT_STATUS_DEFN	int *
+#  endif
 
-#  else /* Don't use BSD.  */
+# else /* Don't use BSD.  */
 
-#   define __WAIT_INT(status)	(status)
-#   define __WAIT_STATUS	int *
-#   define __WAIT_STATUS_DEFN	int *
+#  define __WAIT_INT(status)	(status)
+#  define __WAIT_STATUS	int *
+#  define __WAIT_STATUS_DEFN	int *
 
-#  endif /* Use BSD.  */
+# endif /* Use BSD.  */
 
 /* Define the macros <sys/wait.h> also would define this way.  */
-#  define WEXITSTATUS(status)	__WEXITSTATUS(__WAIT_INT(status))
-#  define WTERMSIG(status)	__WTERMSIG(__WAIT_INT(status))
-#  define WSTOPSIG(status)	__WSTOPSIG(__WAIT_INT(status))
-#  define WIFEXITED(status)	__WIFEXITED(__WAIT_INT(status))
-#  define WIFSIGNALED(status)	__WIFSIGNALED(__WAIT_INT(status))
-#  define WIFSTOPPED(status)	__WIFSTOPPED(__WAIT_INT(status))
-# endif
-#endif
+# define WEXITSTATUS(status)	__WEXITSTATUS(__WAIT_INT(status))
+# define WTERMSIG(status)	__WTERMSIG(__WAIT_INT(status))
+# define WSTOPSIG(status)	__WSTOPSIG(__WAIT_INT(status))
+# define WIFEXITED(status)	__WIFEXITED(__WAIT_INT(status))
+# define WIFSIGNALED(status)	__WIFSIGNALED(__WAIT_INT(status))
+# define WIFSTOPPED(status)	__WIFSTOPPED(__WAIT_INT(status))
+#endif	/* X/Open and <sys/wait.h> not included.  */
 
 /* Returned by `div'.  */
 typedef struct