$NetBSD: patch-ac,v 1.4 2011/03/06 03:47:27 dholland Exp $

--- agent/filter/io.c.orig	2001-03-17 18:31:20.000000000 +0000
+++ agent/filter/io.c
@@ -97,6 +97,7 @@
 #include "portable.h"
 #include <sys/types.h>
 #include <stdio.h>
+#include <stdlib.h>
 #include <errno.h>
 #include <sys/stat.h>
 
@@ -130,6 +131,9 @@
 #ifdef I_SYS_IOCTL
 #include <sys/ioctl.h>
 #endif
+#ifdef I_SYS_PARAM
+#include <sys/param.h>
+#endif
 
 /*
  * The following should be defined in <sys/stat.h>.
@@ -217,9 +221,6 @@ struct pool {
 private int queued = 0;			/* True when mail queued safely */
 private struct mail mail;		/* Where mail is expected to lie */
 
-extern int errno;				/* System call error status */
-extern char *malloc();			/* Memory allocation */
-extern char *realloc();			/* Re-allocation of memory pool */
 extern char *logname();			/* User's login name */
 extern char *strsave();			/* Save string somewhere in core */
 extern int loglvl;				/* Logging level */
@@ -724,7 +725,7 @@ char *location;
 	 */
 
 	char **envp;			/* Environment pointer */
-#ifdef UNION_WAIT
+#if defined(UNION_WAIT) && (!defined(BSD) || BSD < 199306)
 	union wait status;		/* Waiting status */
 #else
 	int status;				/* Status from command */