time_t is 64 bits on all OpenBSD (and NetBSD) arch; cast time values
to a specific-width type to avoid problems on 32-bit arch

Index: src/occtl/time.c
--- src/occtl/time.c.orig
+++ src/occtl/time.c
@@ -36,7 +36,7 @@ void print_time_ival7(char output[MAX_TMPSTR_SIZE], ti
 {
 	time_t t = t1 - t2;
 
-	if ((long)t < 0) {
+	if ((long long)t < 0) {
 		/* system clock changed? */
 		snprintf(output, MAX_TMPSTR_SIZE, "   ?   ");
 		return;
@@ -44,19 +44,19 @@ void print_time_ival7(char output[MAX_TMPSTR_SIZE], ti
 
 	if (t >= 48 * 60 * 60)
 		/* 2 days or more */
-		snprintf(output, MAX_TMPSTR_SIZE, _("%2ludays"),
-			 (long)t / (24 * 60 * 60));
+		snprintf(output, MAX_TMPSTR_SIZE, _("%2lludays"),
+			 (unsigned long long)t / (24 * 60 * 60));
 	else if (t >= 60 * 60)
 		/* 1 hour or more */
 		/* Translation Hint: Hours:Minutes */
-		snprintf(output, MAX_TMPSTR_SIZE, _("%2luh:%02um"),
-			 (long)t / (60 * 60), (unsigned int)((t / 60) % 60));
+		snprintf(output, MAX_TMPSTR_SIZE, _("%2lluh:%02um"),
+			 (unsigned long long)t / (60 * 60), (unsigned int)((t / 60) % 60));
 	else if (t > 60)
 		/* 1 minute or more */
 		/* Translation Hint: Minutes:Seconds */
-		snprintf(output, MAX_TMPSTR_SIZE, "%2lum:%02us", (long)t / 60,
+		snprintf(output, MAX_TMPSTR_SIZE, "%2llum:%02us", (unsigned long long)t / 60,
 			 (unsigned int)t % 60);
 	else
 		/* Translation Hint: Seconds:Centiseconds */
-		snprintf(output, MAX_TMPSTR_SIZE, _("%5lus"), (long)t);
+		snprintf(output, MAX_TMPSTR_SIZE, _("%5llus"), (unsigned long long)t);
 }
