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-rw-r--r--x11vnc/user.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/x11vnc/user.c b/x11vnc/user.c
index 8b0bbbb..c08f27c 100644
--- a/x11vnc/user.c
+++ b/x11vnc/user.c
@@ -244,7 +244,7 @@ static void user2uid(char *user, uid_t *uid, char **name, char **home) {
q = user;
while (*q) {
- if (! isdigit(*q++)) {
+ if (! isdigit((unsigned char) (*q++))) {
numerical = 0;
break;
}
@@ -810,7 +810,7 @@ int read_passwds(char *passfile) {
}
p = line;
while (*p != '\0') {
- if (! isspace(*p)) {
+ if (! isspace((unsigned char) (*p))) {
blank = 0;
break;
}