From 0ff7d9b4e9566cf24bac5fc2eecadc2bd158a184 Mon Sep 17 00:00:00 2001
From: Warner Losh <imp@FreeBSD.org>
Date: Sat, 7 Feb 2009 19:34:44 +0000
Subject: [PATCH] Make sure the comparison is done with an unsigned char.

---
 lib/libc/string/memchr.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/libc/string/memchr.c b/lib/libc/string/memchr.c
index 6d7c2fd94e7..d98d85317e5 100644
--- a/lib/libc/string/memchr.c
+++ b/lib/libc/string/memchr.c
@@ -45,7 +45,7 @@ memchr(const void *s, int c, size_t n)
 		const unsigned char *p = s;
 
 		do {
-			if (*p++ == c)
+			if (*p++ == (unsigned char)c)
 				return ((void *)(p - 1));
 		} while (--n != 0);
 	}