From 74374cc8a40c450423785015c2e30d5a2ed2920c Mon Sep 17 00:00:00 2001
From: rsc <devnull@localhost>
Date: Mon, 31 Oct 2005 16:42:32 +0000
Subject: ctype sign fixes (Tom Miller)

---
 src/cmd/troff/n8.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'src/cmd/troff/n8.c')

diff --git a/src/cmd/troff/n8.c b/src/cmd/troff/n8.c
index ded45438..b2ab175b 100644
--- a/src/cmd/troff/n8.c
+++ b/src/cmd/troff/n8.c
@@ -1,3 +1,4 @@
+#include <u.h>
 #include "tdef.h"
 #include "fns.h"
 #include "ext.h"
@@ -495,7 +496,7 @@ static void install(char *s)	/* map ab4c5de to: 12 abcde \0 00405 \0 */
 	num[0] = '0';
 	*nextpat++ = ' ';	/* fill in with count later */
 	for (npat = lastpat = 0; *s != '\n' && *s != '\0'; s++) {
-		if (isdigit(*s)) {
+		if (isdigit((uchar)*s)) {
 			num[npat] = *s;
 			lastpat = npat;
 		} else {
-- 
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