rust-clippy/tests/ui/zero_ptr.rs

pub fn foo(_const: *const f32, _mut: *mut i64) {}

fn main() {
    let _ = 0 as *const usize;
    let _ = 0 as *mut f64;
    let _: *const u8 = 0 as *const _;

    foo(0 as _, 0 as _);
    foo(0 as *const _, 0 as *mut _);

    let z = 0;
    let _ = z as *const usize; // this is currently not caught
}
Add suggestion for zero-ptr lint 2019-10-02 15:38:00 +00:00			`pub fn foo(_const: const f32, _mut: mut i64) {}`

New zero_ptr lint. This fixes #1047. I did not bother to add a full suggestion, because replacing with `std::ptr::null()` may still lead to inference failures. 2017-02-21 03:36:59 +00:00			`fn main() {`
Add suggestion for zero-ptr lint 2019-10-02 15:38:00 +00:00			`let _ = 0 as *const usize;`
			`let _ = 0 as *mut f64;`
			`let _: const u8 = 0 as const _;`

			`foo(0 as _, 0 as _);`
			`foo(0 as const _, 0 as mut _);`
New zero_ptr lint. This fixes #1047. I did not bother to add a full suggestion, because replacing with `std::ptr::null()` may still lead to inference failures. 2017-02-21 03:36:59 +00:00
			`let z = 0;`
Add suggestion for zero-ptr lint 2019-10-02 15:38:00 +00:00			`let _ = z as *const usize; // this is currently not caught`
New zero_ptr lint. This fixes #1047. I did not bother to add a full suggestion, because replacing with `std::ptr::null()` may still lead to inference failures. 2017-02-21 03:36:59 +00:00			`}`