1 #![expect(unsafe_op_in_unsafe_fn, reason = "old code, not worth updating yet")]
2 
3 unsafe fn test_stdio_isatty() {
4     assert_eq!(libc::isatty(libc::STDIN_FILENO), 1, "stdin is a tty");
5     assert_eq!(libc::isatty(libc::STDOUT_FILENO), 1, "stdout is a tty");
6     assert_eq!(libc::isatty(libc::STDERR_FILENO), 1, "stderr is a tty");
7 }
8 
9 fn main() {
10     // Run the tests.
11     unsafe { test_stdio_isatty() }
12 }
13