From 5fb185fecc64806a772c2ad3956ecc903c508e0c Mon Sep 17 00:00:00 2001
From: Tom Ryder <tom@sanctum.geek.nz>
Date: Sun, 22 Dec 2019 19:19:56 +1300
Subject: Bounds checking on character byte walk

---
 wtf8.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'wtf8.c')

diff --git a/wtf8.c b/wtf8.c
index e277d1a..714a7cc 100644
--- a/wtf8.c
+++ b/wtf8.c
@@ -35,7 +35,7 @@ void print_characters(char *s) {
 	/*
 	 * We need a short counter to find how long each character is
 	 */
-	int c;
+	unsigned char c;
 
 	/*
 	 * Iterate through the string
@@ -46,7 +46,7 @@ void print_characters(char *s) {
 		 * Print blanks and increment a counter until we find how long this
 		 * character is
 		 */
-		for (c = 1; is_utf8_cont(s[c]); c++)
+		for (c = 1; is_utf8_cont(s[c]) && c <= UCHAR_MAX; c++)
 			printf("   ");
 
 		/*
-- 
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