rust/tests/ui/lint/undropped_manually_drops.rs
2024-02-16 20:02:50 +00:00

20 lines
596 B
Rust

//@ check-fail
struct S;
fn main() {
let mut manual1 = std::mem::ManuallyDrop::new(S);
let mut manual2 = std::mem::ManuallyDrop::new(S);
let mut manual3 = std::mem::ManuallyDrop::new(S);
drop(std::mem::ManuallyDrop::new(S)); //~ ERROR calls to `std::mem::drop`
drop(manual1); //~ ERROR calls to `std::mem::drop`
drop({ manual3 }); //~ ERROR calls to `std::mem::drop`
// These lines will drop `S` and should be okay.
unsafe {
std::mem::ManuallyDrop::drop(&mut std::mem::ManuallyDrop::new(S));
std::mem::ManuallyDrop::drop(&mut manual2);
}
}