diff options
Diffstat (limited to 'src/tools/clippy/tests/ui/ptr_as_ptr.fixed')
-rw-r--r-- | src/tools/clippy/tests/ui/ptr_as_ptr.fixed | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/src/tools/clippy/tests/ui/ptr_as_ptr.fixed b/src/tools/clippy/tests/ui/ptr_as_ptr.fixed new file mode 100644 index 000000000..bea6be66a --- /dev/null +++ b/src/tools/clippy/tests/ui/ptr_as_ptr.fixed @@ -0,0 +1,65 @@ +// run-rustfix +// aux-build:macro_rules.rs + +#![warn(clippy::ptr_as_ptr)] +#![feature(custom_inner_attributes)] + +extern crate macro_rules; + +macro_rules! cast_it { + ($ptr: ident) => { + $ptr.cast::<i32>() + }; +} + +fn main() { + let ptr: *const u32 = &42_u32; + let mut_ptr: *mut u32 = &mut 42_u32; + + let _ = ptr.cast::<i32>(); + let _ = mut_ptr.cast::<i32>(); + + // Make sure the lint can handle the difference in their operator precedences. + unsafe { + let ptr_ptr: *const *const u32 = &ptr; + let _ = (*ptr_ptr).cast::<i32>(); + } + + // Changes in mutability. Do not lint this. + let _ = ptr as *mut i32; + let _ = mut_ptr as *const i32; + + // `pointer::cast` cannot perform unsized coercions unlike `as`. Do not lint this. + let ptr_of_array: *const [u32; 4] = &[1, 2, 3, 4]; + let _ = ptr_of_array as *const [u32]; + let _ = ptr_of_array as *const dyn std::fmt::Debug; + + // Ensure the lint doesn't produce unnecessary turbofish for inferred types. + let _: *const i32 = ptr.cast(); + let _: *mut i32 = mut_ptr.cast(); + + // Make sure the lint is triggered inside a macro + let _ = cast_it!(ptr); + + // Do not lint inside macros from external crates + let _ = macro_rules::ptr_as_ptr_cast!(ptr); +} + +fn _msrv_1_37() { + #![clippy::msrv = "1.37"] + let ptr: *const u32 = &42_u32; + let mut_ptr: *mut u32 = &mut 42_u32; + + // `pointer::cast` was stabilized in 1.38. Do not lint this + let _ = ptr as *const i32; + let _ = mut_ptr as *mut i32; +} + +fn _msrv_1_38() { + #![clippy::msrv = "1.38"] + let ptr: *const u32 = &42_u32; + let mut_ptr: *mut u32 = &mut 42_u32; + + let _ = ptr.cast::<i32>(); + let _ = mut_ptr.cast::<i32>(); +} |