rust/tests/ui/unsafe/unsafe-fn-deref-ptr.rs

fn f(p: *const u8) -> u8 {
    let _ = *p; //~ ERROR dereference of raw pointer is unsafe
    let _: u8 = *p; //~ ERROR dereference of raw pointer is unsafe
    _ = *p; //~ ERROR dereference of raw pointer is unsafe
    return *p; //~ ERROR dereference of raw pointer is unsafe
}

fn main() {
}
Rename all raw pointers as necessary 2014-06-25 19:47:34 +00:00			`fn f(p: *const u8) -> u8 {`
Introduce a no-op PlaceMention statement for `let _ =`. 2022-09-06 16:41:01 +00:00			`let _ = *p; //~ ERROR dereference of raw pointer is unsafe`
Add ui test. 2022-10-18 18:41:14 +00:00			`let _: u8 = *p; //~ ERROR dereference of raw pointer is unsafe`
Also test destructuring assignment. 2022-11-26 13:34:39 +00:00			`_ = *p; //~ ERROR dereference of raw pointer is unsafe`
improve error message shown for unsafe operations: explain why undefined behavior could arise Inspired by @gnzlbg at https://github.com/rust-lang/rust/issues/46043#issuecomment-381544673 2018-07-10 08:52:05 +00:00			`return *p; //~ ERROR dereference of raw pointer is unsafe`
prohibit ptr deref unless in unsafe code 2011-10-12 04:08:01 +00:00			`}`

			`fn main() {`
			`}`