mirror of
https://github.com/rust-lang/rust-clippy
synced 2024-11-10 15:14:29 +00:00
443 lines
14 KiB
Text
443 lines
14 KiB
Text
error: casting `i32` to `f32` causes a loss of precision (`i32` is 32 bits wide, but `f32`'s mantissa is only 23 bits wide)
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--> $DIR/cast.rs:14:5
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LL | x0 as f32;
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| ^^^^^^^^^
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= note: `-D clippy::cast-precision-loss` implied by `-D warnings`
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error: casting `i64` to `f32` causes a loss of precision (`i64` is 64 bits wide, but `f32`'s mantissa is only 23 bits wide)
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--> $DIR/cast.rs:16:5
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LL | x1 as f32;
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| ^^^^^^^^^
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error: casting `i64` to `f64` causes a loss of precision (`i64` is 64 bits wide, but `f64`'s mantissa is only 52 bits wide)
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--> $DIR/cast.rs:17:5
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LL | x1 as f64;
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| ^^^^^^^^^
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error: casting `u32` to `f32` causes a loss of precision (`u32` is 32 bits wide, but `f32`'s mantissa is only 23 bits wide)
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--> $DIR/cast.rs:19:5
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LL | x2 as f32;
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| ^^^^^^^^^
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error: casting `u64` to `f32` causes a loss of precision (`u64` is 64 bits wide, but `f32`'s mantissa is only 23 bits wide)
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--> $DIR/cast.rs:21:5
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LL | x3 as f32;
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| ^^^^^^^^^
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error: casting `u64` to `f64` causes a loss of precision (`u64` is 64 bits wide, but `f64`'s mantissa is only 52 bits wide)
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--> $DIR/cast.rs:22:5
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LL | x3 as f64;
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| ^^^^^^^^^
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error: casting `f32` to `i32` may truncate the value
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--> $DIR/cast.rs:24:5
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LL | 1f32 as i32;
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| ^^^^^^^^^^^
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
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= note: `-D clippy::cast-possible-truncation` implied by `-D warnings`
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error: casting `f32` to `u32` may truncate the value
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--> $DIR/cast.rs:25:5
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LL | 1f32 as u32;
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| ^^^^^^^^^^^
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
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error: casting `f32` to `u32` may lose the sign of the value
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--> $DIR/cast.rs:25:5
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LL | 1f32 as u32;
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| ^^^^^^^^^^^
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= note: `-D clippy::cast-sign-loss` implied by `-D warnings`
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error: casting `f64` to `f32` may truncate the value
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--> $DIR/cast.rs:26:5
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LL | 1f64 as f32;
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| ^^^^^^^^^^^
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
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error: casting `i32` to `i8` may truncate the value
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--> $DIR/cast.rs:27:5
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LL | 1i32 as i8;
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| ^^^^^^^^^^
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
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help: ... or use `try_from` and handle the error accordingly
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LL | i8::try_from(1i32);
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| ~~~~~~~~~~~~~~~~~~
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error: casting `i32` to `u8` may truncate the value
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--> $DIR/cast.rs:28:5
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LL | 1i32 as u8;
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| ^^^^^^^^^^
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
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help: ... or use `try_from` and handle the error accordingly
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LL | u8::try_from(1i32);
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| ~~~~~~~~~~~~~~~~~~
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error: casting `f64` to `isize` may truncate the value
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--> $DIR/cast.rs:29:5
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LL | 1f64 as isize;
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| ^^^^^^^^^^^^^
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
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error: casting `f64` to `usize` may truncate the value
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--> $DIR/cast.rs:30:5
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LL | 1f64 as usize;
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| ^^^^^^^^^^^^^
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
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error: casting `f64` to `usize` may lose the sign of the value
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--> $DIR/cast.rs:30:5
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LL | 1f64 as usize;
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| ^^^^^^^^^^^^^
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error: casting `u32` to `u16` may truncate the value
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--> $DIR/cast.rs:31:5
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LL | 1f32 as u32 as u16;
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| ^^^^^^^^^^^^^^^^^^
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
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help: ... or use `try_from` and handle the error accordingly
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LL | u16::try_from(1f32 as u32);
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| ~~~~~~~~~~~~~~~~~~~~~~~~~~
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error: casting `f32` to `u32` may truncate the value
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--> $DIR/cast.rs:31:5
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LL | 1f32 as u32 as u16;
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| ^^^^^^^^^^^
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
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error: casting `f32` to `u32` may lose the sign of the value
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--> $DIR/cast.rs:31:5
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LL | 1f32 as u32 as u16;
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| ^^^^^^^^^^^
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error: casting `i32` to `i8` may truncate the value
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--> $DIR/cast.rs:33:22
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LL | let _x: i8 = 1i32 as _;
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| ^^^^^^^^^
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
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help: ... or use `try_from` and handle the error accordingly
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LL | let _x: i8 = 1i32.try_into();
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| ~~~~~~~~~~~~~~~
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error: casting `f32` to `i32` may truncate the value
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--> $DIR/cast.rs:34:9
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LL | 1f32 as i32;
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| ^^^^^^^^^^^
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
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error: casting `f64` to `i32` may truncate the value
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--> $DIR/cast.rs:35:9
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LL | 1f64 as i32;
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| ^^^^^^^^^^^
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
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error: casting `f32` to `u8` may truncate the value
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--> $DIR/cast.rs:36:9
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LL | 1f32 as u8;
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| ^^^^^^^^^^
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
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error: casting `f32` to `u8` may lose the sign of the value
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--> $DIR/cast.rs:36:9
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LL | 1f32 as u8;
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| ^^^^^^^^^^
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error: casting `u8` to `i8` may wrap around the value
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--> $DIR/cast.rs:39:5
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LL | 1u8 as i8;
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| ^^^^^^^^^
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= note: `-D clippy::cast-possible-wrap` implied by `-D warnings`
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error: casting `u16` to `i16` may wrap around the value
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--> $DIR/cast.rs:40:5
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LL | 1u16 as i16;
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| ^^^^^^^^^^^
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error: casting `u32` to `i32` may wrap around the value
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--> $DIR/cast.rs:41:5
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LL | 1u32 as i32;
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| ^^^^^^^^^^^
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error: casting `u64` to `i64` may wrap around the value
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--> $DIR/cast.rs:42:5
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LL | 1u64 as i64;
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| ^^^^^^^^^^^
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error: casting `usize` to `isize` may wrap around the value
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--> $DIR/cast.rs:43:5
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LL | 1usize as isize;
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| ^^^^^^^^^^^^^^^
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error: casting `usize` to `i8` may truncate the value
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--> $DIR/cast.rs:44:5
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LL | 1usize as i8; // should not wrap, usize is never 8 bits
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| ^^^^^^^^^^^^
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
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help: ... or use `try_from` and handle the error accordingly
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LL | i8::try_from(1usize); // should not wrap, usize is never 8 bits
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| ~~~~~~~~~~~~~~~~~~~~
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error: casting `usize` to `i16` may truncate the value
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--> $DIR/cast.rs:45:5
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LL | 1usize as i16; // wraps on 16 bit ptr size
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| ^^^^^^^^^^^^^
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
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help: ... or use `try_from` and handle the error accordingly
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LL | i16::try_from(1usize); // wraps on 16 bit ptr size
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| ~~~~~~~~~~~~~~~~~~~~~
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error: casting `usize` to `i16` may wrap around the value on targets with 16-bit wide pointers
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--> $DIR/cast.rs:45:5
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LL | 1usize as i16; // wraps on 16 bit ptr size
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| ^^^^^^^^^^^^^
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= note: `usize` and `isize` may be as small as 16 bits on some platforms
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= note: for more information see https://doc.rust-lang.org/reference/types/numeric.html#machine-dependent-integer-types
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error: casting `usize` to `i32` may truncate the value on targets with 64-bit wide pointers
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--> $DIR/cast.rs:46:5
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LL | 1usize as i32; // wraps on 32 bit ptr size
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| ^^^^^^^^^^^^^
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
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help: ... or use `try_from` and handle the error accordingly
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LL | i32::try_from(1usize); // wraps on 32 bit ptr size
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| ~~~~~~~~~~~~~~~~~~~~~
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error: casting `usize` to `i32` may wrap around the value on targets with 32-bit wide pointers
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--> $DIR/cast.rs:46:5
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LL | 1usize as i32; // wraps on 32 bit ptr size
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| ^^^^^^^^^^^^^
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error: casting `usize` to `i64` may wrap around the value on targets with 64-bit wide pointers
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--> $DIR/cast.rs:47:5
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LL | 1usize as i64; // wraps on 64 bit ptr size
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| ^^^^^^^^^^^^^
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error: casting `u16` to `isize` may wrap around the value on targets with 16-bit wide pointers
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--> $DIR/cast.rs:49:5
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LL | 1u16 as isize; // wraps on 16 bit ptr size
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| ^^^^^^^^^^^^^
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= note: `usize` and `isize` may be as small as 16 bits on some platforms
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= note: for more information see https://doc.rust-lang.org/reference/types/numeric.html#machine-dependent-integer-types
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error: casting `u32` to `isize` may wrap around the value on targets with 32-bit wide pointers
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--> $DIR/cast.rs:50:5
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LL | 1u32 as isize; // wraps on 32 bit ptr size
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| ^^^^^^^^^^^^^
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error: casting `u64` to `isize` may truncate the value on targets with 32-bit wide pointers
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--> $DIR/cast.rs:51:5
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LL | 1u64 as isize; // wraps on 64 bit ptr size
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| ^^^^^^^^^^^^^
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
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help: ... or use `try_from` and handle the error accordingly
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LL | isize::try_from(1u64); // wraps on 64 bit ptr size
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| ~~~~~~~~~~~~~~~~~~~~~
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error: casting `u64` to `isize` may wrap around the value on targets with 64-bit wide pointers
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--> $DIR/cast.rs:51:5
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LL | 1u64 as isize; // wraps on 64 bit ptr size
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| ^^^^^^^^^^^^^
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error: casting `i32` to `u32` may lose the sign of the value
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--> $DIR/cast.rs:54:5
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LL | -1i32 as u32;
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| ^^^^^^^^^^^^
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error: casting `isize` to `usize` may lose the sign of the value
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--> $DIR/cast.rs:56:5
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LL | -1isize as usize;
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| ^^^^^^^^^^^^^^^^
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error: casting `i64` to `i8` may truncate the value
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--> $DIR/cast.rs:123:5
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LL | (-99999999999i64).min(1) as i8; // should be linted because signed
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
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help: ... or use `try_from` and handle the error accordingly
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LL | i8::try_from((-99999999999i64).min(1)); // should be linted because signed
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| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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error: casting `u64` to `u8` may truncate the value
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--> $DIR/cast.rs:135:5
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LL | 999999u64.clamp(0, 256) as u8; // should still be linted
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
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help: ... or use `try_from` and handle the error accordingly
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LL | u8::try_from(999999u64.clamp(0, 256)); // should still be linted
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| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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error: casting `main::E2` to `u8` may truncate the value
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--> $DIR/cast.rs:156:21
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LL | let _ = self as u8;
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| ^^^^^^^^^^
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
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help: ... or use `try_from` and handle the error accordingly
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LL | let _ = u8::try_from(self);
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| ~~~~~~~~~~~~~~~~~~
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error: casting `main::E2::B` to `u8` will truncate the value
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--> $DIR/cast.rs:157:21
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LL | let _ = Self::B as u8;
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| ^^^^^^^^^^^^^
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= note: `-D clippy::cast-enum-truncation` implied by `-D warnings`
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error: casting `main::E5` to `i8` may truncate the value
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--> $DIR/cast.rs:193:21
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LL | let _ = self as i8;
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| ^^^^^^^^^^
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
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help: ... or use `try_from` and handle the error accordingly
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LL | let _ = i8::try_from(self);
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| ~~~~~~~~~~~~~~~~~~
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error: casting `main::E5::A` to `i8` will truncate the value
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--> $DIR/cast.rs:194:21
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LL | let _ = Self::A as i8;
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| ^^^^^^^^^^^^^
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error: casting `main::E6` to `i16` may truncate the value
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--> $DIR/cast.rs:208:21
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LL | let _ = self as i16;
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| ^^^^^^^^^^^
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
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help: ... or use `try_from` and handle the error accordingly
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LL | let _ = i16::try_from(self);
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| ~~~~~~~~~~~~~~~~~~~
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error: casting `main::E7` to `usize` may truncate the value on targets with 32-bit wide pointers
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--> $DIR/cast.rs:223:21
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LL | let _ = self as usize;
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| ^^^^^^^^^^^^^
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
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help: ... or use `try_from` and handle the error accordingly
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LL | let _ = usize::try_from(self);
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| ~~~~~~~~~~~~~~~~~~~~~
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error: casting `main::E10` to `u16` may truncate the value
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--> $DIR/cast.rs:264:21
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LL | let _ = self as u16;
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| ^^^^^^^^^^^
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
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help: ... or use `try_from` and handle the error accordingly
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LL | let _ = u16::try_from(self);
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| ~~~~~~~~~~~~~~~~~~~
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error: casting `u32` to `u8` may truncate the value
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--> $DIR/cast.rs:272:13
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LL | let c = (q >> 16) as u8;
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| ^^^^^^^^^^^^^^^
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
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help: ... or use `try_from` and handle the error accordingly
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LL | let c = u8::try_from(q >> 16);
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| ~~~~~~~~~~~~~~~~~~~~~
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error: casting `u32` to `u8` may truncate the value
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--> $DIR/cast.rs:275:13
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LL | let c = (q / 1000) as u8;
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| ^^^^^^^^^^^^^^^^
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= help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
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help: ... or use `try_from` and handle the error accordingly
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LL | let c = u8::try_from(q / 1000);
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| ~~~~~~~~~~~~~~~~~~~~~~
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error: aborting due to 51 previous errors
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