Fix tidy by adding new feature gate test

2 files changed, 24 insertions, 0 deletions

diff --git a/src/test/ui/feature-gate-format_args_nl.rs b/src/test/ui/feature-gate-format_args_nl.rs
index e69de29bb2d..b976d57f9c1 100644
--- a/src/test/ui/feature-gate-format_args_nl.rs
+++ b/src/test/ui/feature-gate-format_args_nl.rs
@@ -0,0 +1,13 @@
+// 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.
+
+fn main() {
+    format_args_nl!(""); //~ ERROR `format_args_nl` is only for internal language use
+}
diff --git a/src/test/ui/feature-gate-format_args_nl.stderr b/src/test/ui/feature-gate-format_args_nl.stderr
new file mode 100644
index 00000000000..a79535641a6
--- /dev/null
+++ b/src/test/ui/feature-gate-format_args_nl.stderr
@@ -0,0 +1,11 @@
+error[E0658]: `format_args_nl` is only for internal language use and is subject to change
+  --> $DIR/feature-gate-format_args_nl.rs:12:5
+   |
+LL |     format_args_nl!(""); //~ ERROR `format_args_nl` is only for internal language use
+   |     ^^^^^^^^^^^^^^^^^^^^
+   |
+   = help: add #![feature(format_args_nl)] to the crate attributes to enable
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0658`.