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-rw-r--r--posix/unistd.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/posix/unistd.h b/posix/unistd.h
index 14b11b1..e9754e1 100644
--- a/posix/unistd.h
+++ b/posix/unistd.h
@@ -513,8 +513,8 @@ extern char *ttyname __P ((int __fd));
#ifdef __USE_REENTRANT
/* Store at most BUFLEN characters of the pathname of the terminal FD is
open on in BUF. Return 0 on success, -1 otherwise. */
-extern int __ttyname_r __P ((int __fd, char *__buf, int __buflen));
-extern int ttyname_r __P ((int __fd, char *__buf, int __buflen));
+extern int __ttyname_r __P ((int __fd, char *__buf, size_t __buflen));
+extern int ttyname_r __P ((int __fd, char *__buf, size_t __buflen));
#endif
/* Return 1 if FD is a valid descriptor associated