rust-clippy/tests/ui/cast.stderr

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;
   |     ^^^^^^^^^^^
   |
   = note: `-D clippy::cast-possible-truncation` implied by `-D warnings`

error: casting `f32` to `u32` may truncate the value
  --> $DIR/cast.rs:25:5
   |
LL |     1f32 as u32;
   |     ^^^^^^^^^^^

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;
   |     ^^^^^^^^^^^

error: casting `i32` to `i8` may truncate the value
  --> $DIR/cast.rs:27:5
   |
LL |     1i32 as i8;
   |     ^^^^^^^^^^

error: casting `i32` to `u8` may truncate the value
  --> $DIR/cast.rs:28:5
   |
LL |     1i32 as u8;
   |     ^^^^^^^^^^

error: casting `f64` to `isize` may truncate the value
  --> $DIR/cast.rs:29:5
   |
LL |     1f64 as isize;
   |     ^^^^^^^^^^^^^

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

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

error: casting `u8` to `i8` may wrap around the value
  --> $DIR/cast.rs:32:5
   |
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:33:5
   |
LL |     1u16 as i16;
   |     ^^^^^^^^^^^

error: casting `u32` to `i32` may wrap around the value
  --> $DIR/cast.rs:34:5
   |
LL |     1u32 as i32;
   |     ^^^^^^^^^^^

error: casting `u64` to `i64` may wrap around the value
  --> $DIR/cast.rs:35:5
   |
LL |     1u64 as i64;
   |     ^^^^^^^^^^^

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

error: casting `i32` to `u32` may lose the sign of the value
  --> $DIR/cast.rs:39:5
   |
LL |     -1i32 as u32;
   |     ^^^^^^^^^^^^

error: casting `isize` to `usize` may lose the sign of the value
  --> $DIR/cast.rs:41:5
   |
LL |     -1isize as usize;
   |     ^^^^^^^^^^^^^^^^

error: casting `i64` to `i8` may truncate the value
  --> $DIR/cast.rs:108:5
   |
LL |     (-99999999999i64).min(1) as i8; // should be linted because signed
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: casting `u64` to `u8` may truncate the value
  --> $DIR/cast.rs:120:5
   |
LL |     999999u64.clamp(0, 256) as u8; // should still be linted
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: casting `main::E2` to `u8` may truncate the value
  --> $DIR/cast.rs:141:21
   |
LL |             let _ = self as u8;
   |                     ^^^^^^^^^^

error: casting `main::E2::B` to `u8` will truncate the value
  --> $DIR/cast.rs:142:21
   |
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:178:21
   |
LL |             let _ = self as i8;
   |                     ^^^^^^^^^^

error: casting `main::E5::A` to `i8` will truncate the value
  --> $DIR/cast.rs:179:21
   |
LL |             let _ = Self::A as i8;
   |                     ^^^^^^^^^^^^^

error: casting `main::E6` to `i16` may truncate the value
  --> $DIR/cast.rs:193:21
   |
LL |             let _ = self as i16;
   |                     ^^^^^^^^^^^

error: casting `main::E7` to `usize` may truncate the value on targets with 32-bit wide pointers
  --> $DIR/cast.rs:208:21
   |
LL |             let _ = self as usize;
   |                     ^^^^^^^^^^^^^

error: casting `main::E10` to `u16` may truncate the value
  --> $DIR/cast.rs:249:21
   |
LL |             let _ = self as u16;
   |                     ^^^^^^^^^^^

error: casting `u32` to `u8` may truncate the value
  --> $DIR/cast.rs:257:13
   |
LL |     let c = (q >> 16) as u8;
   |             ^^^^^^^^^^^^^^^

error: casting `u32` to `u8` may truncate the value
  --> $DIR/cast.rs:260:13
   |
LL |     let c = (q / 1000) as u8;
   |             ^^^^^^^^^^^^^^^^

error: aborting due to 33 previous errors