From fd36b5fd52003d3c3b246c8fb9fb669c5f0f68b0 Mon Sep 17 00:00:00 2001
From: varkor <github@varkor.com>
Date: Thu, 23 May 2019 22:56:31 +0100
Subject: Add test for #[must_use] in tuples

---
 src/test/ui/lint/must_use-tuple.rs     |  5 +++++
 src/test/ui/lint/must_use-tuple.stderr | 15 +++++++++++++++
 2 files changed, 20 insertions(+)
 create mode 100644 src/test/ui/lint/must_use-tuple.rs
 create mode 100644 src/test/ui/lint/must_use-tuple.stderr

(limited to 'src/test')

diff --git a/src/test/ui/lint/must_use-tuple.rs b/src/test/ui/lint/must_use-tuple.rs
new file mode 100644
index 00000000000..bc972d7ffc3
--- /dev/null
+++ b/src/test/ui/lint/must_use-tuple.rs
@@ -0,0 +1,5 @@
+#![deny(unused_must_use)]
+
+fn main() {
+    (Ok::<(), ()>(()),); //~ ERROR unused `std::result::Result` that must be used
+}
diff --git a/src/test/ui/lint/must_use-tuple.stderr b/src/test/ui/lint/must_use-tuple.stderr
new file mode 100644
index 00000000000..67d1ec01966
--- /dev/null
+++ b/src/test/ui/lint/must_use-tuple.stderr
@@ -0,0 +1,15 @@
+error: unused `std::result::Result` that must be used
+  --> $DIR/must_use-tuple.rs:4:5
+   |
+LL |     (Ok::<(), ()>(()),);
+   |     ^^^^^^^^^^^^^^^^^^^^
+   |
+note: lint level defined here
+  --> $DIR/must_use-tuple.rs:1:9
+   |
+LL | #![deny(unused_must_use)]
+   |         ^^^^^^^^^^^^^^^
+   = note: this `Result` may be an `Err` variant, which should be handled
+
+error: aborting due to previous error
+
-- 
cgit 1.4.1-3-g733a5