diff -ru tcb-1.0.3/pam_tcb/pam_unix_acct.c tcb-1.0.3.new/pam_tcb/pam_unix_acct.c
--- tcb-1.0.3/pam_tcb/pam_unix_acct.c	2005-12-28 00:05:02.000000000 +0100
+++ tcb-1.0.3/pam_tcb/pam_unix_acct.c	2009-12-17 14:32:43.000000000 +0100
@@ -51,10 +51,12 @@
 
 	curdays = time(NULL) / (60 * 60 * 24);
 	D(("today is %d, last change %d", curdays, spw->sp_lstchg));
-	if ((curdays > spw->sp_expire) && (spw->sp_expire != -1))
+	if ((curdays > spw->sp_expire) && (spw->sp_expire != -1) &&
+	    ((int)spw->sp_expire != -1))
 		return ACCT_3;
 
 	if ((curdays > (spw->sp_lstchg + spw->sp_max + spw->sp_inact)) &&
+	    ((int)spw->sp_max != -1) && ((int)spw->sp_inact != -1) &&
 	    (spw->sp_max != -1) && (spw->sp_inact != -1) &&
 	    (spw->sp_lstchg != 0))
 		return ACCT_4;
@@ -65,11 +66,13 @@
 		return ACCT_5;
 
 	if (((spw->sp_lstchg + spw->sp_max) < curdays) &&
-	    (spw->sp_max != -1))
+	    (spw->sp_max != -1) &&
+	    ((int)spw->sp_max != -1))
 		return ACCT_6;
 
 	if ((curdays > (spw->sp_lstchg + spw->sp_max - spw->sp_warn)) &&
-	    (spw->sp_max != -1) && (spw->sp_warn != -1)) {
+	    (spw->sp_max != -1) && (spw->sp_warn != -1) &&
+	    ((int)spw->sp_max != -1) && ((int)spw->sp_warn != -1)) {
 		daysleft = (spw->sp_lstchg + spw->sp_max) - curdays;
 		return ACCT_7 + 256 * daysleft;
 	}
diff -ru tcb-1.0.3/pam_tcb/pam_unix_passwd.c tcb-1.0.3.new/pam_tcb/pam_unix_passwd.c
--- tcb-1.0.3/pam_tcb/pam_unix_passwd.c	2009-04-03 17:01:52.000000000 +0200
+++ tcb-1.0.3/pam_tcb/pam_unix_passwd.c	2009-12-17 14:33:33.000000000 +0100
@@ -457,17 +457,19 @@
 		/* Get the current number of days since 1970. */
 		curdays = time(NULL) / (60 * 60 * 24);
 		if (curdays < spw->sp_lstchg + spw->sp_min &&
-		    spw->sp_min != -1)
+		    spw->sp_min != -1 &&
+		    (int)spw->sp_min != -1)
 			/* too early */
 			return PAM_AUTHTOK_ERR;
 		else
 		if (curdays > spw->sp_lstchg + spw->sp_max + spw->sp_inact &&
 		    spw->sp_max != -1 && spw->sp_inact != -1 &&
+		    (int)spw->sp_max != -1 && (int)spw->sp_inact != -1 &&
 		    spw->sp_lstchg != 0)
 			/* too late */
 			return PAM_ACCT_EXPIRED;
 		else
-		if (curdays > spw->sp_expire && spw->sp_expire != -1)
+		if (curdays > spw->sp_expire && spw->sp_expire != -1 && (int)spw->sp_expire != -1)
 			/* account expired */
 			return PAM_ACCT_EXPIRED;
 	}