114 lines
4.2 KiB
Rust
114 lines
4.2 KiB
Rust
#![warn(clippy::invalid_upcast_comparisons)]
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#![allow(
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unused,
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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::cast_lossless
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)]
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fn mk_value<T>() -> T {
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unimplemented!()
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}
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fn main() {
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let u32: u32 = mk_value();
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let u8: u8 = mk_value();
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let i32: i32 = mk_value();
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let i8: i8 = mk_value();
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// always false, since no u8 can be > 300
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(u8 as u32) > 300;
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//~^ ERROR: because of the numeric bounds on `u8` prior to casting, this expression is
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//~| NOTE: `-D clippy::invalid-upcast-comparisons` implied by `-D warnings`
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(u8 as i32) > 300;
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//~^ ERROR: because of the numeric bounds on `u8` prior to casting, this expression is
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(u8 as u32) == 300;
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//~^ ERROR: because of the numeric bounds on `u8` prior to casting, this expression is
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(u8 as i32) == 300;
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//~^ ERROR: because of the numeric bounds on `u8` prior to casting, this expression is
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300 < (u8 as u32);
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//~^ ERROR: because of the numeric bounds on `u8` prior to casting, this expression is
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300 < (u8 as i32);
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//~^ ERROR: because of the numeric bounds on `u8` prior to casting, this expression is
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300 == (u8 as u32);
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//~^ ERROR: because of the numeric bounds on `u8` prior to casting, this expression is
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300 == (u8 as i32);
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//~^ ERROR: because of the numeric bounds on `u8` prior to casting, this expression is
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// inverted of the above
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(u8 as u32) <= 300;
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//~^ ERROR: because of the numeric bounds on `u8` prior to casting, this expression is
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(u8 as i32) <= 300;
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//~^ ERROR: because of the numeric bounds on `u8` prior to casting, this expression is
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(u8 as u32) != 300;
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//~^ ERROR: because of the numeric bounds on `u8` prior to casting, this expression is
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(u8 as i32) != 300;
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//~^ ERROR: because of the numeric bounds on `u8` prior to casting, this expression is
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300 >= (u8 as u32);
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//~^ ERROR: because of the numeric bounds on `u8` prior to casting, this expression is
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300 >= (u8 as i32);
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//~^ ERROR: because of the numeric bounds on `u8` prior to casting, this expression is
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300 != (u8 as u32);
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//~^ ERROR: because of the numeric bounds on `u8` prior to casting, this expression is
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300 != (u8 as i32);
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//~^ ERROR: because of the numeric bounds on `u8` prior to casting, this expression is
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// always false, since u8 -> i32 doesn't wrap
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(u8 as i32) < 0;
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//~^ ERROR: because of the numeric bounds on `u8` prior to casting, this expression is
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-5 != (u8 as i32);
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//~^ ERROR: because of the numeric bounds on `u8` prior to casting, this expression is
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// inverted of the above
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(u8 as i32) >= 0;
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//~^ ERROR: because of the numeric bounds on `u8` prior to casting, this expression is
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-5 == (u8 as i32);
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//~^ ERROR: because of the numeric bounds on `u8` prior to casting, this expression is
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// always false, since no u8 can be 1337
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1337 == (u8 as i32);
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//~^ ERROR: because of the numeric bounds on `u8` prior to casting, this expression is
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1337 == (u8 as u32);
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//~^ ERROR: because of the numeric bounds on `u8` prior to casting, this expression is
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// inverted of the above
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1337 != (u8 as i32);
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//~^ ERROR: because of the numeric bounds on `u8` prior to casting, this expression is
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1337 != (u8 as u32);
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//~^ ERROR: because of the numeric bounds on `u8` prior to casting, this expression is
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// Those are Ok:
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(u8 as u32) > 20;
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42 == (u8 as i32);
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42 != (u8 as i32);
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42 > (u8 as i32);
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(u8 as i32) == 42;
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(u8 as i32) != 42;
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(u8 as i32) > 42;
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(u8 as i32) < 42;
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(u8 as i8) == -1;
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(u8 as i8) != -1;
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(u8 as i32) > -1;
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//~^ ERROR: because of the numeric bounds on `u8` prior to casting, this expression is
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(u8 as i32) < -1;
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//~^ ERROR: because of the numeric bounds on `u8` prior to casting, this expression is
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(u32 as i32) < -5;
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(u32 as i32) < 10;
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(i8 as u8) == 1;
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(i8 as u8) != 1;
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(i8 as u8) < 1;
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(i8 as u8) > 1;
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(i32 as u32) < 5;
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(i32 as u32) < 10;
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-5 < (u32 as i32);
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0 <= (u32 as i32);
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0 < (u32 as i32);
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-5 > (u32 as i32);
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-5 >= (u8 as i32);
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//~^ ERROR: because of the numeric bounds on `u8` prior to casting, this expression is
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-5 == (u32 as i32);
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}
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