50 lines
1.4 KiB
Rust
50 lines
1.4 KiB
Rust
//@ check-pass
|
|
|
|
#![warn(forgetting_references)]
|
|
|
|
use std::mem::forget;
|
|
|
|
struct SomeStruct;
|
|
|
|
fn main() {
|
|
forget(&SomeStruct); //~ WARN calls to `std::mem::forget`
|
|
|
|
let mut owned = SomeStruct;
|
|
forget(&owned); //~ WARN calls to `std::mem::forget`
|
|
forget(&&owned); //~ WARN calls to `std::mem::forget`
|
|
forget(&mut owned); //~ WARN calls to `std::mem::forget`
|
|
forget(owned);
|
|
|
|
let reference1 = &SomeStruct;
|
|
forget(&*reference1); //~ WARN calls to `std::mem::forget`
|
|
|
|
let reference2 = &mut SomeStruct;
|
|
forget(reference2); //~ WARN calls to `std::mem::forget`
|
|
|
|
let ref reference3 = SomeStruct;
|
|
forget(reference3); //~ WARN calls to `std::mem::forget`
|
|
|
|
let ref reference4 = SomeStruct;
|
|
|
|
let a = 1;
|
|
match a {
|
|
1 => forget(&*reference1), //~ WARN calls to `std::mem::forget`
|
|
2 => forget(reference3), //~ WARN calls to `std::mem::forget`
|
|
3 => forget(reference4), //~ WARN calls to `std::mem::forget`
|
|
_ => {}
|
|
}
|
|
}
|
|
|
|
#[allow(dead_code)]
|
|
fn test_generic_fn_forget<T>(val: T) {
|
|
forget(&val); //~ WARN calls to `std::mem::forget`
|
|
forget(val);
|
|
}
|
|
|
|
#[allow(dead_code)]
|
|
fn test_similarly_named_function() {
|
|
fn forget<T>(_val: T) {}
|
|
forget(&SomeStruct); //OK; call to unrelated function which happens to have the same name
|
|
std::mem::forget(&SomeStruct); //~ WARN calls to `std::mem::forget`
|
|
}
|