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-rw-r--r--sysdeps/posix/waitid.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/sysdeps/posix/waitid.c b/sysdeps/posix/waitid.c
index a36883a..fa90211 100644
--- a/sysdeps/posix/waitid.c
+++ b/sysdeps/posix/waitid.c
@@ -1,5 +1,5 @@
/* Pseudo implementation of waitid.
- Copyright (C) 1997 Free Software Foundation, Inc.
+ Copyright (C) 1997, 1998 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Zack Weinberg <zack@rabi.phys.columbia.edu>, 1997.
@@ -20,6 +20,8 @@
#include <errno.h>
#include <signal.h>
+#define __need_NULL
+#include <stddef.h>
#include <sys/wait.h>
#include <sys/types.h>