Fix rustdoc run failures by shutting down definitely some lints

1 files changed, 24 insertions, 0 deletions

diff --git a/src/test/rustdoc-ui/unused.rs b/src/test/rustdoc-ui/unused.rs
new file mode 100644
index 00000000000..8b530986392
--- /dev/null
+++ b/src/test/rustdoc-ui/unused.rs
@@ -0,0 +1,24 @@
+// Copyright 2018 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// compile-pass
+
+// This test purpose is to check that unused_imports lint isn't fired
+// by rustdoc. Why would it? Because when rustdoc is running, it uses
+// "everybody-loops" which replaces parts of code with "loop {}" to get
+// huge performance improvements.
+
+#![deny(unused_imports)]
+
+use std::fs::File;
+
+pub fn f() {
+    let _: File;
+}