From 6bb8c2fb8598e25ea7c22a3e3eea09ba3a87c8d4 Mon Sep 17 00:00:00 2001
From: Arlo Siemsen <arsiem@microsoft.com>
Date: Mon, 10 Oct 2022 10:59:25 -0500
Subject: [PATCH] Add test to verify stdin is closed for build.rs

---
 tests/testsuite/build_script.rs | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/tests/testsuite/build_script.rs b/tests/testsuite/build_script.rs
index dceec92538bf..69980361a6fe 100644
--- a/tests/testsuite/build_script.rs
+++ b/tests/testsuite/build_script.rs
@@ -4905,3 +4905,27 @@ for more information about build script outputs.
         )
         .run();
 }
+
+#[cargo_test]
+fn custom_build_closes_stdin() {
+    let p = project()
+        .file(
+            "Cargo.toml",
+            r#"
+                [package]
+                name = "foo"
+                version = "0.5.0"
+                build = "build.rs"
+            "#,
+        )
+        .file("src/main.rs", "fn main() {}")
+        .file(
+            "build.rs",
+            r#"fn main() {
+                let mut line = String::new();
+                std::io::stdin().read_line(&mut line).unwrap();
+            }"#,
+        )
+        .build();
+    p.cargo("build").run();
+}