From 377d16625ed7cec352f160ecd6b60dc129e4e985 Mon Sep 17 00:00:00 2001
From: mmcc <mmcc@openbsd.org>
Date: Thu, 15 Oct 2015 19:36:50 +0000
Subject: [PATCH] Introduce an unsigned char variable for the ctype function
 calls.

ok millert@
---
 bin/ksh/vi.c | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/bin/ksh/vi.c b/bin/ksh/vi.c
index 6888204c212..8c6c98ec2d4 100644
--- a/bin/ksh/vi.c
+++ b/bin/ksh/vi.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: vi.c,v 1.33 2015/09/18 07:28:24 nicm Exp $	*/
+/*	$OpenBSD: vi.c,v 1.34 2015/10/15 19:36:50 mmcc Exp $	*/
 
 /*
  *	vi command editing
@@ -1082,18 +1082,20 @@ vi_cmd(int argcnt, const char *cmd)
 
 		case '~': {
 			char	*p;
+			unsigned char c;
 			int	i;
 
 			if (es->linelen == 0)
 				return -1;
 			for (i = 0; i < argcnt; i++) {
 				p = &es->cbuf[es->cursor];
-				if (islower((unsigned char)*p)) {
+				c = (unsigned char)*p;
+				if (islower(c)) {
 					modified = 1; hnum = hlast;
-					*p = toupper(*p);
-				} else if (isupper((unsigned char)*p)) {
+					*p = toupper(c);
+				} else if (isupper(c)) {
 					modified = 1; hnum = hlast;
-					*p = tolower(*p);
+					*p = tolower(c);
 				}
 				if (es->cursor < es->linelen - 1)
 					es->cursor++;
-- 
2.20.1