src/tools/clippy/tests/ui/cast.stderr


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error: casting `i32` to `f32` causes a loss of precision (`i32` is 32 bits wide, but `f32`'s mantissa is only 23 bits wide)
  --> $DIR/cast.rs:14:5
   |
LL |     x0 as f32;
   |     ^^^^^^^^^
   |
   = note: `-D clippy::cast-precision-loss` implied by `-D warnings`

error: casting `i64` to `f32` causes a loss of precision (`i64` is 64 bits wide, but `f32`'s mantissa is only 23 bits wide)
  --> $DIR/cast.rs:16:5
   |
LL |     x1 as f32;
   |     ^^^^^^^^^

error: casting `i64` to `f64` causes a loss of precision (`i64` is 64 bits wide, but `f64`'s mantissa is only 52 bits wide)
  --> $DIR/cast.rs:17:5
   |
LL |     x1 as f64;
   |     ^^^^^^^^^

error: casting `u32` to `f32` causes a loss of precision (`u32` is 32 bits wide, but `f32`'s mantissa is only 23 bits wide)
  --> $DIR/cast.rs:19:5
   |
LL |     x2 as f32;
   |     ^^^^^^^^^

error: casting `u64` to `f32` causes a loss of precision (`u64` is 64 bits wide, but `f32`'s mantissa is only 23 bits wide)
  --> $DIR/cast.rs:21:5
   |
LL |     x3 as f32;
   |     ^^^^^^^^^

error: casting `u64` to `f64` causes a loss of precision (`u64` is 64 bits wide, but `f64`'s mantissa is only 52 bits wide)
  --> $DIR/cast.rs:22:5
   |
LL |     x3 as f64;
   |     ^^^^^^^^^

error: casting `f32` to `i32` may truncate the value
  --> $DIR/cast.rs:24:5
   |
LL |     1f32 as i32;
   |     ^^^^^^^^^^^
   |
   = help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
   = note: `-D clippy::cast-possible-truncation` implied by `-D warnings`
help: ... or use `try_from` and handle the error accordingly
   |
LL |     i32::try_from(1f32);
   |     ~~~~~~~~~~~~~~~~~~~

error: casting `f32` to `u32` may truncate the value
  --> $DIR/cast.rs:25:5
   |
LL |     1f32 as u32;
   |     ^^^^^^^^^^^
   |
   = help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
help: ... or use `try_from` and handle the error accordingly
   |
LL |     u32::try_from(1f32);
   |     ~~~~~~~~~~~~~~~~~~~

error: casting `f32` to `u32` may lose the sign of the value
  --> $DIR/cast.rs:25:5
   |
LL |     1f32 as u32;
   |     ^^^^^^^^^^^
   |
   = note: `-D clippy::cast-sign-loss` implied by `-D warnings`

error: casting `f64` to `f32` may truncate the value
  --> $DIR/cast.rs:26:5
   |
LL |     1f64 as f32;
   |     ^^^^^^^^^^^
   |
   = help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
help: ... or use `try_from` and handle the error accordingly
   |
LL |     f32::try_from(1f64);
   |     ~~~~~~~~~~~~~~~~~~~

error: casting `i32` to `i8` may truncate the value
  --> $DIR/cast.rs:27:5
   |
LL |     1i32 as i8;
   |     ^^^^^^^^^^
   |
   = help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
help: ... or use `try_from` and handle the error accordingly
   |
LL |     i8::try_from(1i32);
   |     ~~~~~~~~~~~~~~~~~~

error: casting `i32` to `u8` may truncate the value
  --> $DIR/cast.rs:28:5
   |
LL |     1i32 as u8;
   |     ^^^^^^^^^^
   |
   = help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
help: ... or use `try_from` and handle the error accordingly
   |
LL |     u8::try_from(1i32);
   |     ~~~~~~~~~~~~~~~~~~

error: casting `f64` to `isize` may truncate the value
  --> $DIR/cast.rs:29:5
   |
LL |     1f64 as isize;
   |     ^^^^^^^^^^^^^
   |
   = help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
help: ... or use `try_from` and handle the error accordingly
   |
LL |     isize::try_from(1f64);
   |     ~~~~~~~~~~~~~~~~~~~~~

error: casting `f64` to `usize` may truncate the value
  --> $DIR/cast.rs:30:5
   |
LL |     1f64 as usize;
   |     ^^^^^^^^^^^^^
   |
   = help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
help: ... or use `try_from` and handle the error accordingly
   |
LL |     usize::try_from(1f64);
   |     ~~~~~~~~~~~~~~~~~~~~~

error: casting `f64` to `usize` may lose the sign of the value
  --> $DIR/cast.rs:30:5
   |
LL |     1f64 as usize;
   |     ^^^^^^^^^^^^^

error: casting `u32` to `u16` may truncate the value
  --> $DIR/cast.rs:31:5
   |
LL |     1f32 as u32 as u16;
   |     ^^^^^^^^^^^^^^^^^^
   |
   = help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
help: ... or use `try_from` and handle the error accordingly
   |
LL |     u16::try_from(1f32 as u32);
   |     ~~~~~~~~~~~~~~~~~~~~~~~~~~

error: casting `f32` to `u32` may truncate the value
  --> $DIR/cast.rs:31:5
   |
LL |     1f32 as u32 as u16;
   |     ^^^^^^^^^^^
   |
   = help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
help: ... or use `try_from` and handle the error accordingly
   |
LL |     u32::try_from(1f32) as u16;
   |     ~~~~~~~~~~~~~~~~~~~

error: casting `f32` to `u32` may lose the sign of the value
  --> $DIR/cast.rs:31:5
   |
LL |     1f32 as u32 as u16;
   |     ^^^^^^^^^^^

error: casting `u8` to `i8` may wrap around the value
  --> $DIR/cast.rs:33:5
   |
LL |     1u8 as i8;
   |     ^^^^^^^^^
   |
   = note: `-D clippy::cast-possible-wrap` implied by `-D warnings`

error: casting `u16` to `i16` may wrap around the value
  --> $DIR/cast.rs:34:5
   |
LL |     1u16 as i16;
   |     ^^^^^^^^^^^

error: casting `u32` to `i32` may wrap around the value
  --> $DIR/cast.rs:35:5
   |
LL |     1u32 as i32;
   |     ^^^^^^^^^^^

error: casting `u64` to `i64` may wrap around the value
  --> $DIR/cast.rs:36:5
   |
LL |     1u64 as i64;
   |     ^^^^^^^^^^^

error: casting `usize` to `isize` may wrap around the value
  --> $DIR/cast.rs:37:5
   |
LL |     1usize as isize;
   |     ^^^^^^^^^^^^^^^

error: casting `i32` to `u32` may lose the sign of the value
  --> $DIR/cast.rs:40:5
   |
LL |     -1i32 as u32;
   |     ^^^^^^^^^^^^

error: casting `isize` to `usize` may lose the sign of the value
  --> $DIR/cast.rs:42:5
   |
LL |     -1isize as usize;
   |     ^^^^^^^^^^^^^^^^

error: casting `i64` to `i8` may truncate the value
  --> $DIR/cast.rs:109:5
   |
LL |     (-99999999999i64).min(1) as i8; // should be linted because signed
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
help: ... or use `try_from` and handle the error accordingly
   |
LL |     i8::try_from((-99999999999i64).min(1)); // should be linted because signed
   |     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

error: casting `u64` to `u8` may truncate the value
  --> $DIR/cast.rs:121:5
   |
LL |     999999u64.clamp(0, 256) as u8; // should still be linted
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
help: ... or use `try_from` and handle the error accordingly
   |
LL |     u8::try_from(999999u64.clamp(0, 256)); // should still be linted
   |     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

error: casting `main::E2` to `u8` may truncate the value
  --> $DIR/cast.rs:142:21
   |
LL |             let _ = self as u8;
   |                     ^^^^^^^^^^
   |
   = help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
help: ... or use `try_from` and handle the error accordingly
   |
LL |             let _ = u8::try_from(self);
   |                     ~~~~~~~~~~~~~~~~~~

error: casting `main::E2::B` to `u8` will truncate the value
  --> $DIR/cast.rs:143:21
   |
LL |             let _ = Self::B as u8;
   |                     ^^^^^^^^^^^^^
   |
   = note: `-D clippy::cast-enum-truncation` implied by `-D warnings`

error: casting `main::E5` to `i8` may truncate the value
  --> $DIR/cast.rs:179:21
   |
LL |             let _ = self as i8;
   |                     ^^^^^^^^^^
   |
   = help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
help: ... or use `try_from` and handle the error accordingly
   |
LL |             let _ = i8::try_from(self);
   |                     ~~~~~~~~~~~~~~~~~~

error: casting `main::E5::A` to `i8` will truncate the value
  --> $DIR/cast.rs:180:21
   |
LL |             let _ = Self::A as i8;
   |                     ^^^^^^^^^^^^^

error: casting `main::E6` to `i16` may truncate the value
  --> $DIR/cast.rs:194:21
   |
LL |             let _ = self as i16;
   |                     ^^^^^^^^^^^
   |
   = help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
help: ... or use `try_from` and handle the error accordingly
   |
LL |             let _ = i16::try_from(self);
   |                     ~~~~~~~~~~~~~~~~~~~

error: casting `main::E7` to `usize` may truncate the value on targets with 32-bit wide pointers
  --> $DIR/cast.rs:209:21
   |
LL |             let _ = self as usize;
   |                     ^^^^^^^^^^^^^
   |
   = help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
help: ... or use `try_from` and handle the error accordingly
   |
LL |             let _ = usize::try_from(self);
   |                     ~~~~~~~~~~~~~~~~~~~~~

error: casting `main::E10` to `u16` may truncate the value
  --> $DIR/cast.rs:250:21
   |
LL |             let _ = self as u16;
   |                     ^^^^^^^^^^^
   |
   = help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
help: ... or use `try_from` and handle the error accordingly
   |
LL |             let _ = u16::try_from(self);
   |                     ~~~~~~~~~~~~~~~~~~~

error: casting `u32` to `u8` may truncate the value
  --> $DIR/cast.rs:258:13
   |
LL |     let c = (q >> 16) as u8;
   |             ^^^^^^^^^^^^^^^
   |
   = help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
help: ... or use `try_from` and handle the error accordingly
   |
LL |     let c = u8::try_from((q >> 16));
   |             ~~~~~~~~~~~~~~~~~~~~~~~

error: casting `u32` to `u8` may truncate the value
  --> $DIR/cast.rs:261:13
   |
LL |     let c = (q / 1000) as u8;
   |             ^^^^^^^^^^^^^^^^
   |
   = help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
help: ... or use `try_from` and handle the error accordingly
   |
LL |     let c = u8::try_from((q / 1000));
   |             ~~~~~~~~~~~~~~~~~~~~~~~~

error: aborting due to 36 previous errors