rust-clippy/tests/ui/transmute.stderr
2018-10-06 09:43:08 -07:00

246 lines
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Text

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
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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
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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
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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
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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
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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