fix undefined behaviour of using isspace ctype function

[sic.git] / util.c

diff --git a/util.c b/util.c
index 25678120422eea5ec0782e9040fdd5ad24b9ff45..0869cca08401a08f53878653f3a37d5bf0d6a12f 100644 (file)
--- a/util.c
+++ b/util.c
@@ -42,7 +42,7 @@ dial(char *host, char *port) {
 
 static char *
 eat(char *s, int (*p)(int), int r) {
-       while(*s != '\0' && p(*s) == r)
+       while(*s != '\0' && p((unsigned char)*s) == r)
                s++;
        return s;
 }
@@ -61,7 +61,7 @@ trim(char *s) {
        char *e;
 
        e = s + strlen(s) - 1;
-       while(e > s && isspace(*e))
+       while(e > s && isspace((unsigned char)*e))
                e--;
        *(e + 1) = '\0';
 }