rust-clippy/tests/ui/transmute.stderr

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2017-08-01 15:54:21 +00:00
error: transmute from a type (`&'a T`) to itself
--> $DIR/transmute.rs:22:20
|
22 | let _: &'a T = core::intrinsics::transmute(t);
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
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= note: `-D useless-transmute` implied by `-D warnings`
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error: transmute from a reference to a pointer
--> $DIR/transmute.rs:26:23
|
26 | let _: *const T = core::intrinsics::transmute(t);
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `t as *const T`
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error: transmute from a reference to a pointer
--> $DIR/transmute.rs:28:21
|
28 | let _: *mut T = core::intrinsics::transmute(t);
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `t as *const T as *mut T`
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error: transmute from a reference to a pointer
--> $DIR/transmute.rs:30:23
|
30 | let _: *const U = core::intrinsics::transmute(t);
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `t as *const T as *const U`
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error: transmute from a pointer type (`*const T`) to a reference type (`&T`)
--> $DIR/transmute.rs:35:17
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35 | let _: &T = std::mem::transmute(p);
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| ^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*p`
|
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= note: `-D transmute-ptr-to-ref` implied by `-D warnings`
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error: transmute from a pointer type (`*mut T`) to a reference type (`&mut T`)
--> $DIR/transmute.rs:38:21
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38 | let _: &mut T = std::mem::transmute(m);
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| ^^^^^^^^^^^^^^^^^^^^^^ help: try: `&mut *m`
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error: transmute from a pointer type (`*mut T`) to a reference type (`&T`)
--> $DIR/transmute.rs:41:17
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41 | let _: &T = std::mem::transmute(m);
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| ^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*m`
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error: transmute from a pointer type (`*mut T`) to a reference type (`&mut T`)
--> $DIR/transmute.rs:44:21
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44 | let _: &mut T = std::mem::transmute(p as *mut T);
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&mut *(p as *mut T)`
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error: transmute from a pointer type (`*const U`) to a reference type (`&T`)
--> $DIR/transmute.rs:47:17
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47 | let _: &T = std::mem::transmute(o);
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| ^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*(o as *const T)`
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error: transmute from a pointer type (`*mut U`) to a reference type (`&mut T`)
--> $DIR/transmute.rs:50:21
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50 | let _: &mut T = std::mem::transmute(om);
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| ^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&mut *(om as *mut T)`
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error: transmute from a pointer type (`*mut U`) to a reference type (`&T`)
--> $DIR/transmute.rs:53:17
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53 | let _: &T = std::mem::transmute(om);
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| ^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*(om as *const T)`
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error: transmute from a pointer type (`*const i32`) to a reference type (`&issue1231::Foo<'_, u8>`)
--> $DIR/transmute.rs:64:32
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64 | let _: &Foo<u8> = unsafe { std::mem::transmute::<_, &Foo<_>>(raw) };
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*(raw as *const Foo<_>)`
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error: transmute from a pointer type (`*const i32`) to a reference type (`&issue1231::Foo<'_, &u8>`)
--> $DIR/transmute.rs:66:33
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66 | let _: &Foo<&u8> = unsafe { std::mem::transmute::<_, &Foo<&_>>(raw) };
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*(raw as *const Foo<&_>)`
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error: transmute from a pointer type (`*const i32`) to a reference type (`&u8`)
--> $DIR/transmute.rs:70:14
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70 | unsafe { std::mem::transmute::<_, Bar>(raw) };
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*(raw as *const u8)`
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error: transmute from a type (`std::vec::Vec<i32>`) to itself
--> $DIR/transmute.rs:76:27
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76 | let _: Vec<i32> = core::intrinsics::transmute(my_vec());
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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error: transmute from a type (`std::vec::Vec<i32>`) to itself
--> $DIR/transmute.rs:78:27
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78 | let _: Vec<i32> = core::mem::transmute(my_vec());
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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error: transmute from a type (`std::vec::Vec<i32>`) to itself
--> $DIR/transmute.rs:80:27
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80 | let _: Vec<i32> = std::intrinsics::transmute(my_vec());
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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error: transmute from a type (`std::vec::Vec<i32>`) to itself
--> $DIR/transmute.rs:82:27
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82 | let _: Vec<i32> = std::mem::transmute(my_vec());
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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error: transmute from a type (`std::vec::Vec<i32>`) to itself
--> $DIR/transmute.rs:84:27
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84 | let _: Vec<i32> = my_transmute(my_vec());
| ^^^^^^^^^^^^^^^^^^^^^^
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error: transmute from an integer to a pointer
--> $DIR/transmute.rs:92:31
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92 | let _: *const usize = std::mem::transmute(5_isize);
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `5_isize as *const usize`
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error: transmute from an integer to a pointer
--> $DIR/transmute.rs:96:31
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96 | let _: *const usize = std::mem::transmute(1+1usize);
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `(1+1usize) as *const usize`
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error: transmute from a type (`*const Usize`) to the type that it points to (`Usize`)
--> $DIR/transmute.rs:111:24
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111 | let _: Usize = core::intrinsics::transmute(int_const_ptr);
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
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= note: `-D crosspointer-transmute` implied by `-D warnings`
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error: transmute from a type (`*mut Usize`) to the type that it points to (`Usize`)
--> $DIR/transmute.rs:113:24
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113 | let _: Usize = core::intrinsics::transmute(int_mut_ptr);
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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error: transmute from a type (`Usize`) to a pointer to that type (`*const Usize`)
--> $DIR/transmute.rs:115:31
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115 | let _: *const Usize = core::intrinsics::transmute(my_int());
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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error: transmute from a type (`Usize`) to a pointer to that type (`*mut Usize`)
--> $DIR/transmute.rs:117:29
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117 | let _: *mut Usize = core::intrinsics::transmute(my_int());
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2017-10-02 15:23:24 +00:00
error: transmute from a `u32` to a `char`
--> $DIR/transmute.rs:123:28
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123 | let _: char = unsafe { std::mem::transmute(0_u32) };
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `std::char::from_u32(0_u32).unwrap()`
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|
= note: `-D transmute-int-to-char` implied by `-D warnings`
error: transmute from a `i32` to a `char`
--> $DIR/transmute.rs:124:28
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124 | let _: char = unsafe { std::mem::transmute(0_i32) };
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `std::char::from_u32(0_i32 as u32).unwrap()`
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error: transmute from a `u8` to a `bool`
--> $DIR/transmute.rs:129:28
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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
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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
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135 | let _: f32 = unsafe { std::mem::transmute(0_i32) };
| ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `f32::from_bits(0_i32 as u32)`
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error: transmute from a `&[u8]` to a `&str`
--> $DIR/transmute.rs:139:28
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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
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140 | let _: &mut str = unsafe { std::mem::transmute(mb) };
| ^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `std::str::from_utf8_mut(mb).unwrap()`