From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Mon, 31 May 2021 22:39:20 +0000 (+0100)
Subject: childio: Add a test case to simulate the Linux kernel race
X-Git-Tag: otter-0.7.0~184
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=commitdiff_plain;h=d3ed151cd5c3ea5765951187f4d4547422cb4950;p=otter.git

childio: Add a test case to simulate the Linux kernel race

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>
---

diff --git a/src/childio.rs b/src/childio.rs
index 5272ac82..0ecd6822 100644
--- a/src/childio.rs
+++ b/src/childio.rs
@@ -242,4 +242,14 @@ pub mod test {
     assert!( w[0].ends_with(ENDING) );
   }
 
+
+  #[test]
+  fn t_like_linux_wtf() {
+    let mut c = Command::new("sh");
+    c.args(&["-ec", "exec >/dev/null; sleep 0.1; exit 1"]);
+    let (_w, mut r) = run_pair(c, "sh".to_owned()).unwrap();
+    let mut buf = [0;10];
+    let e = r.read(&mut buf).unwrap_err();
+    assert_is_status_1(&e);
+  }
 }