rust-clippy/tests/ui/transmute.stderr

error: transmute from a type (`&T`) to itself
  --> $DIR/transmute.rs:19:20
   |
LL |     let _: &'a T = core::intrinsics::transmute(t);
   |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: `-D clippy::useless-transmute` implied by `-D warnings`

error: transmute from a reference to a pointer
  --> $DIR/transmute.rs:23:23
   |
LL |     let _: *const T = core::intrinsics::transmute(t);
   |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `t as *const T`

error: transmute from a reference to a pointer
  --> $DIR/transmute.rs:25:21
   |
LL |     let _: *mut T = core::intrinsics::transmute(t);
   |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `t as *const T as *mut T`

error: transmute from a reference to a pointer
  --> $DIR/transmute.rs:27:23
   |
LL |     let _: *const U = core::intrinsics::transmute(t);
   |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `t as *const T as *const U`

error: transmute from a type (`std::vec::Vec<i32>`) to itself
  --> $DIR/transmute.rs:33:27
   |
LL |         let _: Vec<i32> = core::intrinsics::transmute(my_vec());
   |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: transmute from a type (`std::vec::Vec<i32>`) to itself
  --> $DIR/transmute.rs:35:27
   |
LL |         let _: Vec<i32> = core::mem::transmute(my_vec());
   |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: transmute from a type (`std::vec::Vec<i32>`) to itself
  --> $DIR/transmute.rs:37:27
   |
LL |         let _: Vec<i32> = std::intrinsics::transmute(my_vec());
   |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: transmute from a type (`std::vec::Vec<i32>`) to itself
  --> $DIR/transmute.rs:39:27
   |
LL |         let _: Vec<i32> = std::mem::transmute(my_vec());
   |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: transmute from a type (`std::vec::Vec<i32>`) to itself
  --> $DIR/transmute.rs:41:27
   |
LL |         let _: Vec<i32> = my_transmute(my_vec());
   |                           ^^^^^^^^^^^^^^^^^^^^^^

error: transmute from an integer to a pointer
  --> $DIR/transmute.rs:43:31
   |
LL |         let _: *const usize = std::mem::transmute(5_isize);
   |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `5_isize as *const usize`

error: transmute from an integer to a pointer
  --> $DIR/transmute.rs:47:31
   |
LL |         let _: *const usize = std::mem::transmute(1 + 1usize);
   |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `(1 + 1usize) as *const usize`

error: transmute from a type (`*const Usize`) to the type that it points to (`Usize`)
  --> $DIR/transmute.rs:62:24
   |
LL |         let _: Usize = core::intrinsics::transmute(int_const_ptr);
   |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: `-D clippy::crosspointer-transmute` implied by `-D warnings`

error: transmute from a type (`*mut Usize`) to the type that it points to (`Usize`)
  --> $DIR/transmute.rs:64:24
   |
LL |         let _: Usize = core::intrinsics::transmute(int_mut_ptr);
   |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: transmute from a type (`Usize`) to a pointer to that type (`*const Usize`)
  --> $DIR/transmute.rs:66:31
   |
LL |         let _: *const Usize = core::intrinsics::transmute(my_int());
   |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: transmute from a type (`Usize`) to a pointer to that type (`*mut Usize`)
  --> $DIR/transmute.rs:68:29
   |
LL |         let _: *mut Usize = core::intrinsics::transmute(my_int());
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: transmute from a `u32` to a `char`
  --> $DIR/transmute.rs:74:28
   |
LL |     let _: char = unsafe { std::mem::transmute(0_u32) };
   |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `std::char::from_u32(0_u32).unwrap()`
   |
   = note: `-D clippy::transmute-int-to-char` implied by `-D warnings`

error: transmute from a `i32` to a `char`
  --> $DIR/transmute.rs:75:28
   |
LL |     let _: char = unsafe { std::mem::transmute(0_i32) };
   |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `std::char::from_u32(0_i32 as u32).unwrap()`

error: transmute from a `u8` to a `bool`
  --> $DIR/transmute.rs:84:28
   |
LL |     let _: bool = unsafe { std::mem::transmute(0_u8) };
   |                            ^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `0_u8 != 0`
   |
   = note: `-D clippy::transmute-int-to-bool` implied by `-D warnings`

error: transmute from a `u32` to a `f32`
  --> $DIR/transmute.rs:90:31
   |
LL |         let _: f32 = unsafe { std::mem::transmute(0_u32) };
   |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `f32::from_bits(0_u32)`
   |
   = note: `-D clippy::transmute-int-to-float` implied by `-D warnings`

error: transmute from a `i32` to a `f32`
  --> $DIR/transmute.rs:91:31
   |
LL |         let _: f32 = unsafe { std::mem::transmute(0_i32) };
   |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `f32::from_bits(0_i32 as u32)`

error: transmute from a `u64` to a `f64`
  --> $DIR/transmute.rs:92:31
   |
LL |         let _: f64 = unsafe { std::mem::transmute(0_u64) };
   |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `f64::from_bits(0_u64)`

error: transmute from a `i64` to a `f64`
  --> $DIR/transmute.rs:93:31
   |
LL |         let _: f64 = unsafe { std::mem::transmute(0_i64) };
   |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `f64::from_bits(0_i64 as u64)`

error: transmute from a `u8` to a `[u8; 1]`
  --> $DIR/transmute.rs:113:30
   |
LL |             let _: [u8; 1] = std::mem::transmute(0u8);
   |                              ^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0u8.to_ne_bytes()`
   |
   = note: `-D clippy::transmute-num-to-bytes` implied by `-D warnings`

error: transmute from a `u32` to a `[u8; 4]`
  --> $DIR/transmute.rs:114:30
   |
LL |             let _: [u8; 4] = std::mem::transmute(0u32);
   |                              ^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0u32.to_ne_bytes()`

error: transmute from a `u128` to a `[u8; 16]`
  --> $DIR/transmute.rs:115:31
   |
LL |             let _: [u8; 16] = std::mem::transmute(0u128);
   |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0u128.to_ne_bytes()`

error: transmute from a `i8` to a `[u8; 1]`
  --> $DIR/transmute.rs:116:30
   |
LL |             let _: [u8; 1] = std::mem::transmute(0i8);
   |                              ^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0i8.to_ne_bytes()`

error: transmute from a `i32` to a `[u8; 4]`
  --> $DIR/transmute.rs:117:30
   |
LL |             let _: [u8; 4] = std::mem::transmute(0i32);
   |                              ^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0i32.to_ne_bytes()`

error: transmute from a `i128` to a `[u8; 16]`
  --> $DIR/transmute.rs:118:31
   |
LL |             let _: [u8; 16] = std::mem::transmute(0i128);
   |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0i128.to_ne_bytes()`

error: transmute from a `f32` to a `[u8; 4]`
  --> $DIR/transmute.rs:119:30
   |
LL |             let _: [u8; 4] = std::mem::transmute(0.0f32);
   |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0.0f32.to_ne_bytes()`

error: transmute from a `f64` to a `[u8; 8]`
  --> $DIR/transmute.rs:120:30
   |
LL |             let _: [u8; 8] = std::mem::transmute(0.0f64);
   |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0.0f64.to_ne_bytes()`

error: transmute from a `u8` to a `[u8; 1]`
  --> $DIR/transmute.rs:125:30
   |
LL |             let _: [u8; 1] = std::mem::transmute(0u8);
   |                              ^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0u8.to_ne_bytes()`

error: transmute from a `u32` to a `[u8; 4]`
  --> $DIR/transmute.rs:126:30
   |
LL |             let _: [u8; 4] = std::mem::transmute(0u32);
   |                              ^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0u32.to_ne_bytes()`

error: transmute from a `u128` to a `[u8; 16]`
  --> $DIR/transmute.rs:127:31
   |
LL |             let _: [u8; 16] = std::mem::transmute(0u128);
   |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0u128.to_ne_bytes()`

error: transmute from a `i8` to a `[u8; 1]`
  --> $DIR/transmute.rs:128:30
   |
LL |             let _: [u8; 1] = std::mem::transmute(0i8);
   |                              ^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0i8.to_ne_bytes()`

error: transmute from a `i32` to a `[u8; 4]`
  --> $DIR/transmute.rs:129:30
   |
LL |             let _: [u8; 4] = std::mem::transmute(0i32);
   |                              ^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0i32.to_ne_bytes()`

error: transmute from a `i128` to a `[u8; 16]`
  --> $DIR/transmute.rs:130:31
   |
LL |             let _: [u8; 16] = std::mem::transmute(0i128);
   |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0i128.to_ne_bytes()`

error: transmute from a `&[u8]` to a `&str`
  --> $DIR/transmute.rs:140:28
   |
LL |     let _: &str = unsafe { std::mem::transmute(B) };
   |                            ^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `std::str::from_utf8(B).unwrap()`
   |
   = note: `-D clippy::transmute-bytes-to-str` implied by `-D warnings`

error: transmute from a `&mut [u8]` to a `&mut str`
  --> $DIR/transmute.rs:141:32
   |
LL |     let _: &mut str = unsafe { std::mem::transmute(mb) };
   |                                ^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `std::str::from_utf8_mut(mb).unwrap()`

error: transmute from a `&[u8]` to a `&str`
  --> $DIR/transmute.rs:142:30
   |
LL |     const _: &str = unsafe { std::mem::transmute(B) };
   |                              ^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `std::str::from_utf8_unchecked(B)`

error: aborting due to 39 previous errors