rust/tests/ui/nll/maybe-initialized-drop-impl...

20 lines
500 B
Rust

struct Wrap<'p> { p: &'p mut i32 }
impl<'p> Drop for Wrap<'p> {
fn drop(&mut self) {
*self.p += 1;
}
}
struct Foo<'p> { a: String, b: Wrap<'p> }
fn main() {
let mut x = 0;
let wrap = Wrap { p: &mut x };
let s = String::from("str");
let foo = Foo { a: s, b: wrap };
std::mem::drop(foo.b);
x = 1; //~ ERROR cannot assign to `x` because it is borrowed [E0506]
// FIXME ^ Should not error in the future with implicit dtors, only manually implemented ones
}