rust-clippy/tests/ui/transmute.stderr

error: transmute from a type (`&'a T`) to itself
  --> $DIR/transmute.rs:22:20
   |
22 |     let _: &'a T = core::intrinsics::transmute(t);
   |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: `-D useless-transmute` implied by `-D warnings`

error: transmute from a reference to a pointer
  --> $DIR/transmute.rs:26:23
   |
26 |     let _: *const T = core::intrinsics::transmute(t);
   |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `t as *const T`

error: transmute from a reference to a pointer
  --> $DIR/transmute.rs:28:21
   |
28 |     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:30:23
   |
30 |     let _: *const U = core::intrinsics::transmute(t);
   |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `t as *const T as *const U`

error: transmute from a pointer type (`*const T`) to a reference type (`&T`)
  --> $DIR/transmute.rs:35:17
   |
35 |     let _: &T = std::mem::transmute(p);
   |                 ^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*p`
   |
   = note: `-D transmute-ptr-to-ref` implied by `-D warnings`

error: transmute from a pointer type (`*mut T`) to a reference type (`&mut T`)
  --> $DIR/transmute.rs:38:21
   |
38 |     let _: &mut T = std::mem::transmute(m);
   |                     ^^^^^^^^^^^^^^^^^^^^^^ help: try: `&mut *m`

error: transmute from a pointer type (`*mut T`) to a reference type (`&T`)
  --> $DIR/transmute.rs:41:17
   |
41 |     let _: &T = std::mem::transmute(m);
   |                 ^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*m`

error: transmute from a pointer type (`*mut T`) to a reference type (`&mut T`)
  --> $DIR/transmute.rs:44:21
   |
44 |     let _: &mut T = std::mem::transmute(p as *mut T);
   |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&mut *(p as *mut T)`

error: transmute from a pointer type (`*const U`) to a reference type (`&T`)
  --> $DIR/transmute.rs:47:17
   |
47 |     let _: &T = std::mem::transmute(o);
   |                 ^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*(o as *const T)`

error: transmute from a pointer type (`*mut U`) to a reference type (`&mut T`)
  --> $DIR/transmute.rs:50:21
   |
50 |     let _: &mut T = std::mem::transmute(om);
   |                     ^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&mut *(om as *mut T)`

error: transmute from a pointer type (`*mut U`) to a reference type (`&T`)
  --> $DIR/transmute.rs:53:17
   |
53 |     let _: &T = std::mem::transmute(om);
   |                 ^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*(om as *const T)`

error: transmute from a pointer type (`*const i32`) to a reference type (`&issue1231::Foo<'_, u8>`)
  --> $DIR/transmute.rs:64:32
   |
64 |     let _: &Foo<u8> = unsafe { std::mem::transmute::<_, &Foo<_>>(raw) };
   |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*(raw as *const Foo<_>)`

error: transmute from a pointer type (`*const i32`) to a reference type (`&issue1231::Foo<'_, &u8>`)
  --> $DIR/transmute.rs:66:33
   |
66 |     let _: &Foo<&u8> = unsafe { std::mem::transmute::<_, &Foo<&_>>(raw) };
   |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*(raw as *const Foo<&_>)`

error: transmute from a pointer type (`*const i32`) to a reference type (`&u8`)
  --> $DIR/transmute.rs:70:14
   |
70 |     unsafe { std::mem::transmute::<_, Bar>(raw) };
   |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*(raw as *const u8)`

error: transmute from a type (`std::vec::Vec<i32>`) to itself
  --> $DIR/transmute.rs:76:27
   |
76 |         let _: Vec<i32> = core::intrinsics::transmute(my_vec());
   |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: transmute from a type (`std::vec::Vec<i32>`) to itself
  --> $DIR/transmute.rs:78:27
   |
78 |         let _: Vec<i32> = core::mem::transmute(my_vec());
   |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: transmute from a type (`std::vec::Vec<i32>`) to itself
  --> $DIR/transmute.rs:80:27
   |
80 |         let _: Vec<i32> = std::intrinsics::transmute(my_vec());
   |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: transmute from a type (`std::vec::Vec<i32>`) to itself
  --> $DIR/transmute.rs:82:27
   |
82 |         let _: Vec<i32> = std::mem::transmute(my_vec());
   |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: transmute from a type (`std::vec::Vec<i32>`) to itself
  --> $DIR/transmute.rs:84:27
   |
84 |         let _: Vec<i32> = my_transmute(my_vec());
   |                           ^^^^^^^^^^^^^^^^^^^^^^

error: transmute from an integer to a pointer
  --> $DIR/transmute.rs:92:31
   |
92 |         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:96:31
   |
96 |         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:111:24
    |
111 |         let _: Usize = core::intrinsics::transmute(int_const_ptr);
    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: `-D crosspointer-transmute` implied by `-D warnings`

error: transmute from a type (`*mut Usize`) to the type that it points to (`Usize`)
   --> $DIR/transmute.rs:113:24
    |
113 |         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:115:31
    |
115 |         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:117:29
    |
117 |         let _: *mut Usize = core::intrinsics::transmute(my_int());
    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: transmute from a `u32` to a `char`
   --> $DIR/transmute.rs:123:28
    |
123 |     let _: char = unsafe { std::mem::transmute(0_u32) };
    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `std::char::from_u32(0_u32).unwrap()`
    |
    = note: `-D transmute-int-to-char` implied by `-D warnings`

error: transmute from a `i32` to a `char`
   --> $DIR/transmute.rs:124:28
    |
124 |     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:129:28
    |
129 |     let _: bool = unsafe { std::mem::transmute(0_u8) };
    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `0_u8 != 0`
    |
    = note: `-D transmute-int-to-bool` implied by `-D warnings`

error: transmute from a `u32` to a `f32`
   --> $DIR/transmute.rs:134:27
    |
134 |     let _: f32 = unsafe { std::mem::transmute(0_u32) };
    |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `f32::from_bits(0_u32)`
    |
    = note: `-D transmute-int-to-float` implied by `-D warnings`

error: transmute from a `i32` to a `f32`
   --> $DIR/transmute.rs:135:27
    |
135 |     let _: f32 = unsafe { std::mem::transmute(0_i32) };
    |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `f32::from_bits(0_i32 as u32)`

error: transmute from a `&[u8]` to a `&str`
   --> $DIR/transmute.rs:139:28
    |
139 |     let _: &str = unsafe { std::mem::transmute(b) };
    |                            ^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `std::str::from_utf8(b).unwrap()`
    |
    = note: `-D transmute-bytes-to-str` implied by `-D warnings`

error: transmute from a `&mut [u8]` to a `&mut str`
   --> $DIR/transmute.rs:140:32
    |
140 |     let _: &mut str = unsafe { std::mem::transmute(mb) };
    |                                ^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `std::str::from_utf8_mut(mb).unwrap()`