From 9fb7c5ae5e66703240ce4242f55b66a066e0a93c Mon Sep 17 00:00:00 2001
From: Tavian Barnes <tavianator@tavianator.com>
Date: Wed, 14 Dec 2022 10:01:42 -0500
Subject: [PATCH] fs/tests: Fail fast on duplicate errors rather than looping
 indefinitely

---
 library/std/src/fs/tests.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/library/std/src/fs/tests.rs b/library/std/src/fs/tests.rs
index 5c6a16c4bb1..b385ebde439 100644
--- a/library/std/src/fs/tests.rs
+++ b/library/std/src/fs/tests.rs
@@ -1592,6 +1592,6 @@ fn test_read_dir_infinite_loop() {
     // Skip the test if we can't open the directory in the first place
     let Ok(dir) = fs::read_dir(path) else { return };
 
-    // Iterate through the directory
-    for _ in dir {}
+    // Check for duplicate errors
+    assert!(dir.filter(|e| e.is_err()).take(2).count() < 2);
 }