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-rw-r--r--libc/termios/ttyname.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libc/termios/ttyname.c b/libc/termios/ttyname.c
index 5a5d2a225..aa796c892 100644
--- a/libc/termios/ttyname.c
+++ b/libc/termios/ttyname.c
@@ -47,7 +47,7 @@ int attribute_hidden __ttyname_r(int fd, char *ubuf, size_t ubuflen)
char *s;
DIR *fp;
int rv;
- int len;
+ size_t len;
char buf[TTYNAME_BUFLEN];
if (fstat(fd, &st) < 0) {