mixed n$ crap

gistfile1.txt

diff --git a/usr/src/cmd/printf/printf.c b/usr/src/cmd/printf/printf.c
index fe1bb1b..bf07982 100644
--- a/usr/src/cmd/printf/printf.c
+++ b/usr/src/cmd/printf/printf.c
@@ -224,12 +224,19 @@ doformat(char *fmt, int *rval)
 		l = strspn(fmt, digits);
 		if ((l > 0) && (fmt[l] == '$')) {
 			int idx = atoi(fmt);
+			if (fargv == NULL) {
+				warnx1(_("incomplete use of n$"), NULL, NULL);
+				return (NULL);
+			}
 			if (idx <= myargc) {
 				gargv = &myargv[idx - 1];
 			} else {
 				gargv = &myargv[myargc];
 			}
 			fmt += l + 1;
+		} else if (fargv != NULL) {
+			warnx1(_("incomplete use of n$"), NULL, NULL);
+			return (NULL);
 		}
 
 		if (getint(&fieldwidth))
@@ -262,12 +269,20 @@ doformat(char *fmt, int *rval)
 			l = strspn(fmt, digits);
 			if ((l > 0) && (fmt[l] == '$')) {
 				int idx = atoi(fmt);
+				if (fargv == NULL) {
+					warnx1(_("incomplete use of n$"),
+					    NULL, NULL);
+					return (NULL);
+				}
 				if (idx <= myargc) {
 					gargv = &myargv[idx - 1];
 				} else {
 					gargv = &myargv[myargc];
 				}
 				fmt += l + 1;
+			} else if (fargv != NULL) {
+				warnx1(_("incomplete use of n$"), NULL, NULL);
+				return (NULL);
 			}
 
 			if (getint(&precision))