1 files changed, 3 insertions, 10 deletions
diff --git a/newlib/libc/posix/isatty.c b/newlib/libc/posix/isatty.c
index 2732ca2a0..afd5ec85e 100644
--- a/newlib/libc/posix/isatty.c
+++ b/newlib/libc/posix/isatty.c
@@ -1,17 +1,10 @@
 /* isatty.c */
 
-/* Dumb implementation so programs will at least run.  */
-
-#include <sys/stat.h>
+#include <unistd.h>
+#include <reent.h>
 
 int
 _DEFUN(isatty, (fd), int fd)
 {
-  struct stat buf;
-
-  if (fstat (fd, &buf) < 0)
-    return 0;
-  if (S_ISCHR (buf.st_mode))
-    return 1;
-  return 0;
+  return _isatty (fd);
 }