2022-04-04 03:40:58 +00:00
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use std::fmt::Write as _;
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2018-12-09 22:26:16 +00:00
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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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2021-12-28 16:19:47 +00:00
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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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2022-04-04 03:40:58 +00:00
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let _ = write!(self.0, "{}", other);
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2021-12-28 16:19:47 +00:00
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self
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}
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}
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2021-12-31 08:37:39 +00:00
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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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2018-12-09 22:26:16 +00:00
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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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2021-12-28 16:32:55 +00:00
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clippy::op_ref,
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2018-12-09 22:26:16 +00:00
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clippy::double_parens
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)]
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2018-07-28 15:34:52 +00:00
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#[warn(clippy::identity_op)]
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2018-12-10 23:59:59 +00:00
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#[rustfmt::skip]
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2015-05-15 16:46:43 +00:00
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fn main() {
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2015-08-11 18:22:20 +00:00
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let x = 0;
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2017-02-08 13:58:07 +00:00
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x + 0;
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x + (1 - 1);
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2015-08-17 09:46:45 +00:00
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x + 1;
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2017-02-08 13:58:07 +00:00
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0 + x;
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2015-08-17 09:46:45 +00:00
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1 + x;
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2018-12-09 22:26:16 +00:00
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x - ZERO; //no error, as we skip lookups (for now)
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2017-02-08 13:58:07 +00:00
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x | (0);
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2018-12-10 23:59:59 +00:00
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((ZERO)) | x; //no error, as we skip lookups (for now)
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2015-08-11 18:22:20 +00:00
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2017-02-08 13:58:07 +00:00
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x * 1;
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1 * x;
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2018-12-09 22:26:16 +00:00
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x / ONE; //no error, as we skip lookups (for now)
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2015-08-11 18:22:20 +00:00
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2018-12-09 22:26:16 +00:00
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x / 2; //no false positive
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2015-08-17 09:46:45 +00:00
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2018-12-09 22:26:16 +00:00
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x & NEG_ONE; //no error, as we skip lookups (for now)
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2017-02-08 13:58:07 +00:00
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-1 & x;
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2017-09-30 08:33:15 +00:00
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2018-12-09 22:26:16 +00:00
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let u: u8 = 0;
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2017-09-30 08:33:15 +00:00
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u & 255;
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2020-05-15 19:17:37 +00:00
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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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2021-12-28 16:19:47 +00:00
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&x >> 0;
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2021-12-28 16:32:55 +00:00
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x >> &0;
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2021-12-28 16:19:47 +00:00
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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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2021-12-31 08:37:39 +00:00
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1 * Meter; // no error: non-integer
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2022-03-11 03:31:17 +00:00
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2 % 3;
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-2 % 3;
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2022-03-27 13:48:15 +00:00
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2 % -3 + x;
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-2 % -3 + x;
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2022-03-11 03:31:17 +00:00
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x + 1 % 3;
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(x + 1) % 3; // no error
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4 % 3; // no error
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2022-03-27 13:48:15 +00:00
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4 % -3; // no error
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2022-04-22 01:39:38 +00:00
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// See #8724
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let a = 0;
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let b = true;
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0 + if b { 1 } else { 2 };
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0 + if b { 1 } else { 2 } + if b { 3 } else { 4 }; // no error
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0 + match a { 0 => 10, _ => 20 };
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0 + match a { 0 => 10, _ => 20 } + match a { 0 => 30, _ => 40 }; // no error
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0 + if b { 1 } else { 2 } + match a { 0 => 30, _ => 40 }; // no error
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0 + match a { 0 => 10, _ => 20 } + if b { 3 } else { 4 }; // no error
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0 + if b { 0 + 1 } else { 2 };
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0 + match a { 0 => 0 + 10, _ => 20 };
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0 + if b { 0 + 1 } else { 2 } + match a { 0 => 0 + 30, _ => 40 };
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let _ = 0 + if 0 + 1 > 0 { 1 } else { 2 } + if 0 + 1 > 0 { 3 } else { 4 };
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let _ = 0 + match 0 + 1 { 0 => 10, _ => 20 } + match 0 + 1 { 0 => 30, _ => 40 };
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0 + if b { 1 } else { 2 } + if b { 3 } else { 4 } + 0;
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0 + { a } + 3; // no error
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0 + loop { let mut c = 0; if c == 10 { break c; } c += 1; } + { a * 2 }; // no error
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fn f(_: i32) {
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todo!();
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}
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f(1 * a + { 8 * 5 });
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f(0 + if b { 1 } else { 2 } + 3); // no error
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const _: i32 = { 2 * 4 } + 0 + 3;
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const _: i32 = 0 + { 1 + 2 * 3 } + 3; // no error
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2015-05-15 16:46:43 +00:00
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}
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