--- ./arc.c.orig	Tue Apr 14 18:58:59 1992
+++ ./arc.c	Wed Aug 11 10:21:06 1999
@@ -76,11 +76,14 @@
 #if	UNIX
 #include <sys/types.h>
 #include <sys/stat.h>
+#include <unistd.h>
 #endif
 
 #include <string.h>
 #if BSD
 #include <strings.h>
+#include <err.h>
+#include <errno.h>
 #endif
 
 #if	!__STDC__
@@ -101,6 +104,7 @@
 static char   **lst;		/* files list */
 static int	lnum;		/* length of files list */
 
+int
 main(num, arg)			/* system entry point */
 	int		num;	/* number of arguments */
 	char	       *arg[];	/* pointers to arguments */
@@ -110,7 +114,7 @@
 	VOID		upper();/* case conversion routine */
 	char	       *envfind();	/* environment searcher */
 	int		n;	/* index */
-	char	       *arctemp2, *mktemp();
+	char	       *arctemp2;
 #if	GEMDOS
 	VOID		exitpause();
 	int		append;
@@ -219,8 +223,17 @@
 #endif
 #if	!MSDOS
 	{
-		static char tempname[] = "AXXXXXX";
-		strcat(arctemp, mktemp(tempname));
+		static char tempname[] = "AXXXXXX.arc";
+		int fd=-1;
+		strcat(arctemp, tempname);
+		if((fd = mkstemps(arctemp,4)) == -1 ||
+		   (new = fdopen(fd, "w+")) == NULL) {
+			if (fd != -1) {
+				unlink(arctemp);
+				close(fd);
+			}
+			err(1, "can't create temp file %s", arctemp);
+		}
 	}
 #else
 	strcat(arctemp, "$ARCTEMP");
@@ -276,7 +289,7 @@
 			keepbak = 1;
 
 		else if (*a == 'W')	/* suppress warnings */
-			warn = 0;
+			arcwarn = 0;
 #if	!DOS
 		else if (*a == 'I')	/* image mode, no ASCII/EBCDIC x-late */
 			image = !image;
@@ -401,7 +414,7 @@
 expandlst(n)			/* expand an indirect reference */
 	int		n;	/* number of entry to expand */
 {
-	FILE	       *lf, *fopen();	/* list file, opener */
+	FILE	       *lf;	/* list file, opener */
 	char		buf[100];	/* input buffer */
 	int		x;	/* index */
 	char	       *p = lst[n] + 1; /* filename pointer */