rust-clippy/tests/ui/transmute.stderr

error: transmute from a type (`&'a T`) to itself
  --> $DIR/transmute.rs:32:20
   |
32 |     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:36:23
   |
36 |     let _: *const T = core::intrinsics::transmute(t);
   |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `t as *const T`

error: transmute from a reference to a pointer
  --> $DIR/transmute.rs:38:21
   |
38 |     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:40:23
   |
40 |     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:45:17
   |
45 |     let _: &T = std::mem::transmute(p);
   |                 ^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*p`
   |
   = note: `-D clippy::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:48:21
   |
48 |     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:51:17
   |
51 |     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:54:21
   |
54 |     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:57:17
   |
57 |     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:60:21
   |
60 |     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:63:17
   |
63 |     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:74:32
   |
74 |     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:76:33
   |
76 |     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:80:14
   |
80 |     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:86:27
   |
86 |         let _: Vec<i32> = core::intrinsics::transmute(my_vec());
   |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: transmute from a type (`std::vec::Vec<i32>`) to itself
  --> $DIR/transmute.rs:88:27
   |
88 |         let _: Vec<i32> = core::mem::transmute(my_vec());
   |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: transmute from a type (`std::vec::Vec<i32>`) to itself
  --> $DIR/transmute.rs:90:27
   |
90 |         let _: Vec<i32> = std::intrinsics::transmute(my_vec());
   |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: transmute from a type (`std::vec::Vec<i32>`) to itself
  --> $DIR/transmute.rs:92:27
   |
92 |         let _: Vec<i32> = std::mem::transmute(my_vec());
   |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: transmute from a type (`std::vec::Vec<i32>`) to itself
  --> $DIR/transmute.rs:94:27
   |
94 |         let _: Vec<i32> = my_transmute(my_vec());
   |                           ^^^^^^^^^^^^^^^^^^^^^^

error: transmute from an integer to a pointer
   --> $DIR/transmute.rs:102:31
    |
102 |         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:106:31
    |
106 |         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:121:24
    |
121 |         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:123:24
    |
123 |         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:125:31
    |
125 |         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:127:29
    |
127 |         let _: *mut Usize = core::intrinsics::transmute(my_int());
    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: transmute from a `u32` to a `char`
   --> $DIR/transmute.rs:133:28
    |
133 |     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:134:28
    |
134 |     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:139:28
    |
139 |     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:144:27
    |
144 |     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:145:27
    |
145 |     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:149:28
    |
149 |     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:150:32
    |
150 |     let _: &mut str = unsafe { std::mem::transmute(mb) };
    |                                ^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `std::str::from_utf8_mut(mb).unwrap()`

error: transmute from a pointer to a pointer
   --> $DIR/transmute.rs:182:29
    |
182 |         let _: *const f32 = std::mem::transmute(ptr);
    |                             ^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `ptr as *const f32`
    |
    = note: `-D clippy::transmute-ptr-to-ptr` implied by `-D warnings`

error: transmute from a pointer to a pointer
   --> $DIR/transmute.rs:183:27
    |
183 |         let _: *mut f32 = std::mem::transmute(mut_ptr);
    |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `mut_ptr as *mut f32`

error: transmute from a reference to a reference
   --> $DIR/transmute.rs:185:23
    |
185 |         let _: &f32 = std::mem::transmute(&1u32);
    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*(&1u32 as *const u32 as *const f32)`

error: transmute from a reference to a reference
   --> $DIR/transmute.rs:186:23
    |
186 |         let _: &f64 = std::mem::transmute(&1f32);
    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*(&1f32 as *const f32 as *const f64)`

error: transmute from a reference to a reference
   --> $DIR/transmute.rs:189:27
    |
189 |         let _: &mut f32 = std::mem::transmute(&mut 1u32);
    |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&mut *(&mut 1u32 as *mut u32 as *mut f32)`

error: transmute from a reference to a reference
   --> $DIR/transmute.rs:190:37
    |
190 |         let _: &GenericParam<f32> = std::mem::transmute(&GenericParam { t: 1u32 });
    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*(&GenericParam { t: 1u32 } as *const GenericParam<u32> as *const GenericParam<f32>)`

error: aborting due to 38 previous errors