mirror of
https://github.com/rust-lang/rust-clippy
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71 lines
4 KiB
Text
71 lines
4 KiB
Text
error: transmute from an integer to a pointer
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--> tests/ui/transmutes_expressible_as_ptr_casts.rs:17:39
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LL | let _ptr_i32_transmute = unsafe { transmute::<usize, *const i32>(usize::MAX) };
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `usize::MAX as *const i32`
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= note: `-D clippy::useless-transmute` implied by `-D warnings`
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= help: to override `-D warnings` add `#[allow(clippy::useless_transmute)]`
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error: transmute from a pointer to a pointer
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--> tests/ui/transmutes_expressible_as_ptr_casts.rs:21:38
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LL | let _ptr_i8_transmute = unsafe { transmute::<*const i32, *const i8>(ptr_i32) };
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `ptr_i32 as *const i8`
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= note: `-D clippy::transmute-ptr-to-ptr` implied by `-D warnings`
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= help: to override `-D warnings` add `#[allow(clippy::transmute_ptr_to_ptr)]`
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error: transmute from a pointer to a pointer
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--> tests/ui/transmutes_expressible_as_ptr_casts.rs:27:46
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LL | let _ptr_to_unsized_transmute = unsafe { transmute::<*const [i32], *const [u32]>(slice_ptr) };
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `slice_ptr as *const [u32]`
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error: transmute from `*const i32` to `usize` which could be expressed as a pointer cast instead
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--> tests/ui/transmutes_expressible_as_ptr_casts.rs:33:50
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LL | let _usize_from_int_ptr_transmute = unsafe { transmute::<*const i32, usize>(ptr_i32) };
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `ptr_i32 as usize`
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= note: `-D clippy::transmutes-expressible-as-ptr-casts` implied by `-D warnings`
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= help: to override `-D warnings` add `#[allow(clippy::transmutes_expressible_as_ptr_casts)]`
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error: transmute from a reference to a pointer
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--> tests/ui/transmutes_expressible_as_ptr_casts.rs:39:41
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LL | let _array_ptr_transmute = unsafe { transmute::<&[i32; 4], *const [i32; 4]>(array_ref) };
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `array_ref as *const [i32; 4]`
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error: transmute from `fn(usize) -> u8` to `*const usize` which could be expressed as a pointer cast instead
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--> tests/ui/transmutes_expressible_as_ptr_casts.rs:47:41
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LL | let _usize_ptr_transmute = unsafe { transmute::<fn(usize) -> u8, *const usize>(foo) };
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `foo as *const usize`
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error: transmute from `fn(usize) -> u8` to `usize` which could be expressed as a pointer cast instead
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--> tests/ui/transmutes_expressible_as_ptr_casts.rs:51:49
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LL | let _usize_from_fn_ptr_transmute = unsafe { transmute::<fn(usize) -> u8, usize>(foo) };
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `foo as usize`
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error: transmute from `*const u32` to `usize` which could be expressed as a pointer cast instead
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--> tests/ui/transmutes_expressible_as_ptr_casts.rs:54:36
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LL | let _usize_from_ref = unsafe { transmute::<*const u32, usize>(&1u32) };
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&1u32 as *const u32 as usize`
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error: transmute from a reference to a pointer
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--> tests/ui/transmutes_expressible_as_ptr_casts.rs:65:14
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LL | unsafe { transmute::<&[i32; 1], *const u8>(in_param) }
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `in_param as *const [i32; 1] as *const u8`
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error: transmute from `fn()` to `*const u8` which could be expressed as a pointer cast instead
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--> tests/ui/transmutes_expressible_as_ptr_casts.rs:83:28
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LL | let _x: u8 = unsafe { *std::mem::transmute::<fn(), *const u8>(f) };
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `(f as *const u8)`
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error: aborting due to 10 previous errors
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