52 lines
1.3 KiB
Rust
52 lines
1.3 KiB
Rust
struct Length(u8);
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struct Meter;
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impl core::ops::Mul<Meter> for u8 {
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type Output = Length;
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fn mul(self, _: Meter) -> Length {
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Length(self)
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}
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}
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#[derive(Clone, Default, PartialEq, Eq, Hash)]
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struct Vec1 {
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x: i32,
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}
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impl core::ops::Mul<Vec1> for i32 {
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type Output = Vec1;
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fn mul(self, mut right: Vec1) -> Vec1 {
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right.x *= self;
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right
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}
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}
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impl core::ops::Mul<i32> for Vec1 {
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type Output = Vec1;
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fn mul(mut self, right: i32) -> Vec1 {
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self.x *= right;
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self
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}
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}
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#[allow(clippy::no_effect)]
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#[warn(clippy::erasing_op)]
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fn test(x: u8) {
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x * 0;
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//~^ ERROR: this operation will always return zero. This is likely not the intended ou
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//~| NOTE: `-D clippy::erasing-op` implied by `-D warnings`
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0 & x;
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//~^ ERROR: this operation will always return zero. This is likely not the intended ou
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0 / x;
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//~^ ERROR: this operation will always return zero. This is likely not the intended ou
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0 * Meter; // no error: Output type is different from the non-zero argument
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0 * Vec1 { x: 5 };
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//~^ ERROR: this operation will always return zero. This is likely not the intended ou
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Vec1 { x: 5 } * 0;
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//~^ ERROR: this operation will always return zero. This is likely not the intended ou
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}
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fn main() {
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test(0)
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}
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