New upstream version 1.74.1+dfsg1

[rustc.git] / src / tools / clippy / tests / ui / erasing_op.rs

diff --git a/src/tools/clippy/tests/ui/erasing_op.rs b/src/tools/clippy/tests/ui/erasing_op.rs
index 1540062a4bc3ea106dbe64d46462f7016e5caf25..00c74f23fed04a1a2a9ff62f2dbeb438d26ac3ff 100644 (file)
--- a/src/tools/clippy/tests/ui/erasing_op.rs
+++ b/src/tools/clippy/tests/ui/erasing_op.rs
@@ -1,9 +1,51 @@
+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)]
-fn main() {
-    let x: u8 = 0;
-
+fn test(x: u8) {
     x * 0;
+    //~^ ERROR: this operation will always return zero. This is likely not the intended ou
+    //~| NOTE: `-D clippy::erasing-op` implied by `-D warnings`
     0 & x;
+    //~^ ERROR: this operation will always return zero. This is likely not the intended ou
     0 / x;
+    //~^ ERROR: this operation will always return zero. This is likely not the intended ou
+    0 * Meter; // no error: Output type is different from the non-zero argument
+    0 * Vec1 { x: 5 };
+    //~^ ERROR: this operation will always return zero. This is likely not the intended ou
+    Vec1 { x: 5 } * 0;
+    //~^ ERROR: this operation will always return zero. This is likely not the intended ou
+}
+
+fn main() {
+    test(0)
 }