diff -up calendar-1.35-20190227cvs/calendar.c.orig calendar-1.35-20190227cvs/calendar.c
--- calendar-1.35-20190227cvs/calendar.c.orig	2015-12-07 13:46:35.000000000 -0500
+++ calendar-1.35-20190227cvs/calendar.c	2019-02-27 15:02:36.384637931 -0500
@@ -35,7 +35,6 @@
 #include <err.h>
 #include <errno.h>
 #include <locale.h>
-#include <login_cap.h>
 #include <pwd.h>
 #include <signal.h>
 #include <stdio.h>
@@ -98,16 +97,20 @@ main(int argc, char *argv[])
 			break;
 
 		case 'A': /* days after current date */
-			f_dayAfter = strtonum(optarg, 0, INT_MAX, &errstr);
-			if (errstr)
-				errx(1, "-A %s: %s", optarg, errstr);
+			f_dayAfter = strtoll(optarg, NULL, 10);
+			if (errno == ERANGE && (f_dayAfter == LLONG_MIN || f_dayBefore == LLONG_MAX))
+				errx(1, "-A %s: %s", optarg, strerror(errno));
+			else if (f_dayAfter < 0 || f_dayAfter > INT_MAX)
+				errx(1, "-A %s: %s out of range", optarg);
 			f_SetdayAfter = 1;
 			break;
 
 		case 'B': /* days before current date */
-			f_dayBefore = strtonum(optarg, 0, INT_MAX, &errstr);
-			if (errstr)
-				errx(1, "-B %s: %s", optarg, errstr);
+			f_dayBefore = strtoll(optarg, NULL, 10);
+			if (errno == ERANGE && (f_dayBefore == LLONG_MIN || f_dayBefore == LLONG_MAX))
+				errx(1, "-B %s: %s", optarg, strerror(errno));
+			else if (f_dayBefore < 0 || f_dayBefore > INT_MAX)
+				errx(1, "-B %s: %s out of range", optarg);
 			break;
 
 		case 'w':
@@ -123,15 +126,6 @@ main(int argc, char *argv[])
 	if (argc)
 		usage();
 
-	if (doall) {
-		if (pledge("stdio rpath tmppath fattr getpw id proc exec", NULL)
-		    == -1)
-			err(1, "pledge");
-	} else {
-		if (pledge("stdio rpath proc exec", NULL) == -1)
-			err(1, "pledge");
-	}
-
 	/* use current time */
 	if (f_time <= 0)
 	    (void)time(&f_time);
@@ -190,10 +184,6 @@ main(int argc, char *argv[])
 			case 0:	/* child */
 				(void)setpgid(getpid(), getpid());
 				(void)setlocale(LC_ALL, "");
-				if (setusercontext(NULL, pw, pw->pw_uid,
-				    LOGIN_SETALL ^ LOGIN_SETLOGIN))
-					err(1, "unable to set user context (uid %u)",
-					    pw->pw_uid);
 				if (acstat) {
 					if (chdir(pw->pw_dir) ||
 					    stat(calendarFile, &sbuf) != 0 ||
diff -up calendar-1.35-20190227cvs/calendar.h.orig calendar-1.35-20190227cvs/calendar.h
--- calendar-1.35-20190227cvs/calendar.h.orig	2015-12-07 13:46:35.000000000 -0500
+++ calendar-1.35-20190227cvs/calendar.h	2019-02-27 15:02:36.384637931 -0500
@@ -29,6 +29,7 @@
  * SUCH DAMAGE.
  */
 
+#include <sys/types.h>
 
 extern struct passwd *pw;
 extern int doall;
@@ -116,7 +117,7 @@ extern int f_SetdayAfter; /* calendar in
 
 /* calendars */
 extern enum calendars { GREGORIAN = 0, JULIAN, LUNAR } calendar;
-extern u_long julian;
+extern unsigned long julian;
 
 #define NUMEV 3	/* Total number of such special events */
 extern struct specialev spev[NUMEV];
diff -up calendar-1.35-20190227cvs/day.c.orig calendar-1.35-20190227cvs/day.c
--- calendar-1.35-20190227cvs/day.c.orig	2016-09-14 11:09:46.000000000 -0400
+++ calendar-1.35-20190227cvs/day.c	2019-02-27 15:02:36.384637931 -0500
@@ -160,7 +160,7 @@ settime(time_t *now)
 	tp->tm_isdst = 0;
 	tp->tm_hour = 12;
 	*now = mktime(tp);
-	if (isleap(tp->tm_year + 1900))
+	if (__isleap(tp->tm_year + 1900))
 		cumdays = daytab[1];
 	else
 		cumdays = daytab[0];
@@ -288,8 +288,10 @@ isnow(char *endp, int bodun)
 		return (NULL);
 
 	/* adjust bodun rate */
-	if (bodun && !bodun_always)
-		bodun = !arc4random_uniform(3);
+	if (bodun && !bodun_always) {
+		srandom(3);
+		bodun = random();
+	}
 
 	/* Easter or Easter depending days */
 	if (flags & F_SPECIAL)
@@ -440,7 +442,7 @@ isnow(char *endp, int bodun)
 			}
 			v2 = day - tp->tm_yday;
 			if ((v2 > v1) || (v2 < 0)) {
-				if ((v2 += isleap(tp->tm_year + 1900) ? 366 : 365)
+				if ((v2 += __isleap(tp->tm_year + 1900) ? 366 : 365)
 				    <= v1)
 					tmtmp.tm_year++;
 				else if(!bodun || (day - tp->tm_yday) != -1)
@@ -670,7 +672,7 @@ variable_weekday(int *day, int month, in
 	int *cumdays;
 	int day1;
 
-	if (isleap(year))
+	if (__isleap(year))
 		cumdays = daytab[1];
 	else
 		cumdays = daytab[0];
diff -up calendar-1.35-20190227cvs/io.c.orig calendar-1.35-20190227cvs/io.c
--- calendar-1.35-20190227cvs/io.c.orig	2017-09-25 15:13:56.000000000 -0400
+++ calendar-1.35-20190227cvs/io.c	2019-02-27 15:02:36.384637931 -0500
@@ -67,7 +67,7 @@ void
 cal(void)
 {
 	int ch, l, i, bodun = 0, bodun_maybe = 0, var, printing;
-	struct event *events, *cur_evt, *ev1, *tmp;
+	struct event *events = NULL, *cur_evt = NULL, *ev1 = NULL, *tmp = NULL;
 	char buf[2048 + 1], *prefix = NULL, *p;
 	struct match *m;
 	FILE *fp;
@@ -282,8 +282,9 @@ getfield(char *p, char **endp, int *flag
 			switch (*start) {
 			case '-':
 			case '+':
-				var = strtonum(start + 1, 0, 365, &errstr);
-				if (errstr)
+				var = strtoll(start + 1, NULL, 10);
+				if ((errno == ERANGE && (var == LLONG_MIN || var == LLONG_MAX)) ||
+				    (var < 0 || var > 365))
 					return (0); /* Someone is just being silly */
 				if (*start == '-')
 					var = -var;
diff -up calendar-1.35-20190227cvs/ostern.c.orig calendar-1.35-20190227cvs/ostern.c
--- calendar-1.35-20190227cvs/ostern.c.orig	2015-03-14 20:41:28.000000000 -0400
+++ calendar-1.35-20190227cvs/ostern.c	2019-02-27 15:02:36.384637931 -0500
@@ -60,7 +60,7 @@ easter(int year)	/* 0 ... abcd, NOT sinc
 	e_p = e_p + 1;
 
 	e_q = 31 + 28 + e_p;
-	if (isleap(year))
+	if (__isleap(year))
 		e_q++;
 
 	if (e_n == 4)
diff -up calendar-1.35-20190227cvs/paskha.c.orig calendar-1.35-20190227cvs/paskha.c
--- calendar-1.35-20190227cvs/paskha.c.orig	2015-03-14 20:41:28.000000000 -0400
+++ calendar-1.35-20190227cvs/paskha.c	2019-02-27 15:02:36.384637931 -0500
@@ -27,6 +27,7 @@
  */
 
 #include <stdio.h>
+#include <time.h>
 
 #include "calendar.h"
 
@@ -47,7 +48,7 @@ paskha(int R)  /*year*/
 	d = (19*a + x) % 30;
 	e = (2*b + 4*c + 6*d + y) % 7;
 	cumdays = 31 + 28;
-	if (isleap(R))
+	if (__isleap(R))
 		cumdays++;
 	return ((cumdays + 22) + (d + e) + 13);
 }
diff -up calendar-1.35-20190227cvs/pathnames.h.orig calendar-1.35-20190227cvs/pathnames.h
--- calendar-1.35-20190227cvs/pathnames.h.orig	2014-07-30 12:46:17.000000000 -0400
+++ calendar-1.35-20190227cvs/pathnames.h	2019-02-27 15:02:57.883547022 -0500
@@ -33,7 +33,7 @@
 
 #include <paths.h>
 
-#define	_PATH_CPP	"/usr/libexec/tradcpp"
+#define	_PATH_CPP	"/usr/bin/cpp"
 
 			/* XXX -- fix when cpp parses arguments rationally */
 #define	_PATH_INCLUDE	"-I/usr/share/calendar"
diff -up calendar-1.35-20190227cvs/pesach.c.orig calendar-1.35-20190227cvs/pesach.c
--- calendar-1.35-20190227cvs/pesach.c.orig	2015-03-14 20:41:28.000000000 -0400
+++ calendar-1.35-20190227cvs/pesach.c	2019-02-27 15:02:36.384637931 -0500
@@ -18,6 +18,7 @@
  */
 
 #include <stdio.h>
+#include <time.h>
 
 #include "calendar.h"
 
@@ -61,5 +62,5 @@ pesach(int R)
 	if (R > 1582)
 		cumdays += R / 100 - R /400 - 2;
 
-	return (31 + 28 + cumdays + (isleap(R)? 1 : 0));
+	return (31 + 28 + cumdays + (__isleap(R)? 1 : 0));
 }