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authorUlrich Drepper <drepper@redhat.com>2000-02-24 22:31:08 +0000
committerUlrich Drepper <drepper@redhat.com>2000-02-24 22:31:08 +0000
commitc3fb74d389db31b189fbaab2370bdbb3a8f2c652 (patch)
treeb416a868d939001c63c1c1d103798550d9302730 /stdlib/stdlib.h
parent230232e5f8aec363bbbab90b52fd21e046fee0e9 (diff)
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Update.
* posix/sys/wait.h: Handle definitions duplicated in stdlib.h correctly. * stdlib/stdlib.h: Handle definition of wait macros correctly.
Diffstat (limited to 'stdlib/stdlib.h')
-rw-r--r--stdlib/stdlib.h52
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