From 8adf08c4373f5bdd5bbef9aa4dfd0ca5c4a2eefc Mon Sep 17 00:00:00 2001
From: Alex Crichton <alex@alexcrichton.com>
Date: Tue, 17 Jul 2018 10:23:03 -0700
Subject: rustc: Polish off `in_external_macro`

This commit polishes off this new function to compile on newer rustc as well as
update and add a suite of test cases to work with this new check for lints.
---
 .../ui/lint/auxiliary/lints-in-foreign-macros.rs   | 24 +++++++++++++++++++
 src/test/ui/lint/lints-in-foreign-macros.rs        | 28 ++++++++++++++++++++++
 src/test/ui/lint/lints-in-foreign-macros.stderr    | 27 +++++++++++++++++++++
 3 files changed, 79 insertions(+)
 create mode 100644 src/test/ui/lint/auxiliary/lints-in-foreign-macros.rs
 create mode 100644 src/test/ui/lint/lints-in-foreign-macros.rs
 create mode 100644 src/test/ui/lint/lints-in-foreign-macros.stderr

(limited to 'src/test/ui/lint')

diff --git a/src/test/ui/lint/auxiliary/lints-in-foreign-macros.rs b/src/test/ui/lint/auxiliary/lints-in-foreign-macros.rs
new file mode 100644
index 00000000000..cf8e9c18de3
--- /dev/null
+++ b/src/test/ui/lint/auxiliary/lints-in-foreign-macros.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.
+
+#[macro_export]
+macro_rules! bar {
+    () => {use std::string::ToString;}
+}
+
+#[macro_export]
+macro_rules! baz {
+    ($i:item) => ($i)
+}
+
+#[macro_export]
+macro_rules! baz2 {
+    ($($i:tt)*) => ($($i)*)
+}
diff --git a/src/test/ui/lint/lints-in-foreign-macros.rs b/src/test/ui/lint/lints-in-foreign-macros.rs
new file mode 100644
index 00000000000..0f9003877cc
--- /dev/null
+++ b/src/test/ui/lint/lints-in-foreign-macros.rs
@@ -0,0 +1,28 @@
+// 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.
+
+// aux-build:lints-in-foreign-macros.rs
+// compile-pass
+
+#![warn(unused_imports)]
+
+#[macro_use]
+extern crate lints_in_foreign_macros;
+
+macro_rules! foo {
+    () => {use std::string::ToString;} //~ WARN: unused import
+}
+
+mod a { foo!(); }
+mod b { bar!(); }
+mod c { baz!(use std::string::ToString;); } //~ WARN: unused import
+mod d { baz2!(use std::string::ToString;); } //~ WARN: unused import
+
+fn main() {}
diff --git a/src/test/ui/lint/lints-in-foreign-macros.stderr b/src/test/ui/lint/lints-in-foreign-macros.stderr
new file mode 100644
index 00000000000..e9f6d3d3815
--- /dev/null
+++ b/src/test/ui/lint/lints-in-foreign-macros.stderr
@@ -0,0 +1,27 @@
+warning: unused import: `std::string::ToString`
+  --> $DIR/lints-in-foreign-macros.rs:20:16
+   |
+LL |     () => {use std::string::ToString;} //~ WARN: unused import
+   |                ^^^^^^^^^^^^^^^^^^^^^
+...
+LL | mod a { foo!(); }
+   |         ------- in this macro invocation
+   |
+note: lint level defined here
+  --> $DIR/lints-in-foreign-macros.rs:14:9
+   |
+LL | #![warn(unused_imports)]
+   |         ^^^^^^^^^^^^^^
+
+warning: unused import: `std::string::ToString`
+  --> $DIR/lints-in-foreign-macros.rs:25:18
+   |
+LL | mod c { baz!(use std::string::ToString;); } //~ WARN: unused import
+   |                  ^^^^^^^^^^^^^^^^^^^^^
+
+warning: unused import: `std::string::ToString`
+  --> $DIR/lints-in-foreign-macros.rs:26:19
+   |
+LL | mod d { baz2!(use std::string::ToString;); } //~ WARN: unused import
+   |                   ^^^^^^^^^^^^^^^^^^^^^
+
-- 
cgit 1.4.1-3-g733a5