tscrape

commit 8ff19bed65e82fddf4c01543eaa536863b378fc2
parent 1bd861708376c35e3b43e9e0720ff5248d3050d3
Author: Hiltjo Posthuma <hiltjo@codemadness.org>
Date:   Fri,  7 Sep 2018 19:36:50 +0200

util: fix UB with ctype functions

Diffstat:
M
util.c
 | 
6
+++---

1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/util.c b/util.c
@@ -111,13 +111,13 @@ printescape(const char *s)
 	const char *e;
 
 	/* strip leading and trailing white-space */
-	for (; *s && isspace(*s); s++)
+	for (; *s && isspace((unsigned char)*s); s++)
 		;
-	for (e = s + strlen(s); e > s && isspace(*(e - 1)); e--)
+	for (e = s + strlen(s); e > s && isspace((unsigned char)*(e - 1)); e--)
 		;
 
 	for (i = 0; *s && s < e; s++) {
-		if (iscntrl(*s) || isspace(*s)) {
+		if (iscntrl((unsigned char)*s) || isspace((unsigned char)*s)) {
 			i++;
 			continue;
 		}