70 lines
1.2 KiB
Rust
70 lines
1.2 KiB
Rust
const ONE: i64 = 1;
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const NEG_ONE: i64 = -1;
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const ZERO: i64 = 0;
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struct A(String);
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impl std::ops::Shl<i32> for A {
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type Output = A;
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fn shl(mut self, other: i32) -> Self {
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self.0.push_str(&format!("{}", other));
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self
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}
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}
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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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#[allow(
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clippy::eq_op,
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clippy::no_effect,
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clippy::unnecessary_operation,
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clippy::op_ref,
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clippy::double_parens
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)]
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#[warn(clippy::identity_op)]
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#[rustfmt::skip]
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fn main() {
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let x = 0;
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x + 0;
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x + (1 - 1);
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x + 1;
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0 + x;
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1 + x;
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x - ZERO; //no error, as we skip lookups (for now)
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x | (0);
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((ZERO)) | x; //no error, as we skip lookups (for now)
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x * 1;
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1 * x;
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x / ONE; //no error, as we skip lookups (for now)
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x / 2; //no false positive
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x & NEG_ONE; //no error, as we skip lookups (for now)
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-1 & x;
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let u: u8 = 0;
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u & 255;
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1 << 0; // no error, this case is allowed, see issue 3430
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42 << 0;
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1 >> 0;
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42 >> 0;
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&x >> 0;
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x >> &0;
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let mut a = A("".into());
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let b = a << 0; // no error: non-integer
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1 * Meter; // no error: non-integer
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}
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