Auto merge of #9684 - kraktus:ref_option_ref, r=xFrednet

[rust.git] / tests / ui / erasing_op.rs

diff --git a/tests/ui/erasing_op.rs b/tests/ui/erasing_op.rs
index d71662131943384ef1cfb19eccc0b707de04e8be..ae2fad0086daa0af39d6838418b407dfcad2c1a9 100644 (file)
--- a/tests/ui/erasing_op.rs
+++ b/tests/ui/erasing_op.rs
@@ -1,11 +1,33 @@
-// Copyright 2014-2018 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution.
-//
-// 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.
+struct Length(u8);
+struct Meter;
+
+impl core::ops::Mul<Meter> for u8 {
+    type Output = Length;
+    fn mul(self, _: Meter) -> Length {
+        Length(self)
+    }
+}
+
+#[derive(Clone, Default, PartialEq, Eq, Hash)]
+struct Vec1 {
+    x: i32,
+}
+
+impl core::ops::Mul<Vec1> for i32 {
+    type Output = Vec1;
+    fn mul(self, mut right: Vec1) -> Vec1 {
+        right.x *= self;
+        right
+    }
+}
+
+impl core::ops::Mul<i32> for Vec1 {
+    type Output = Vec1;
+    fn mul(mut self, right: i32) -> Vec1 {
+        self.x *= right;
+        self
+    }
+}
 
 #[allow(clippy::no_effect)]
 #[warn(clippy::erasing_op)]
@@ -15,4 +37,7 @@ fn main() {
     x * 0;
     0 & x;
     0 / x;
+    0 * Meter; // no error: Output type is different from the non-zero argument
+    0 * Vec1 { x: 5 };
+    Vec1 { x: 5 } * 0;
 }