From 237b1fc90211081d9542c6d6d65357a476cd0ff2 Mon Sep 17 00:00:00 2001
From: Dan Gohman <dev@sunfishcode.online>
Date: Sun, 10 Sep 2023 05:24:34 -0700
Subject: [PATCH] Fix the `test_ttyname_ok` test when /dev/stdin is
 inaccessable. (#821)

/dev/stdin may be inaccessible in some sandboxed configurations, so just
gracefully return if opening it fails.
---
 tests/termios/ttyname.rs | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/tests/termios/ttyname.rs b/tests/termios/ttyname.rs
index 636178c31..b3f8d4843 100644
--- a/tests/termios/ttyname.rs
+++ b/tests/termios/ttyname.rs
@@ -4,7 +4,11 @@ use std::fs::File;
 
 #[test]
 fn test_ttyname_ok() {
-    let file = File::open("/dev/stdin").unwrap();
+    let file = match File::open("/dev/stdin") {
+        Ok(file) => file,
+        Err(err) if err.kind() == std::io::ErrorKind::PermissionDenied => return,
+        Err(err) => Err(err).unwrap(),
+    };
     if isatty(&file) {
         assert!(ttyname(&file, Vec::new())
             .unwrap()