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/eqn/input.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'src/cmd/eqn/input.c')

diff --git a/src/cmd/eqn/input.c b/src/cmd/eqn/input.c
index 85a57366..a7432f33 100644
--- a/src/cmd/eqn/input.c
+++ b/src/cmd/eqn/input.c
@@ -189,9 +189,9 @@ input(void)
 				ERROR "argfp underflow" FATAL;
 			popsrc();
 			goto loop;
-		} else if (c == '$' && isdigit(*srcp->sp)) {
+		} else if (c == '$' && isdigit((uchar)*srcp->sp)) {
 			int n = 0;
-			while (isdigit(*srcp->sp))
+			while (isdigit((uchar)*srcp->sp))
 				n = 10 * n + *srcp->sp++ - '0';
 			if (n > 0 && n <= MAXARGS)
 				pushsrc(String, argfp->argstk[n-1]);
-- 
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