rust/tests/ui/lint/undropped_manually_drops.rs

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//@ 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);
}
}