rust/tests/ui/borrowck/borrowck-consume-upcast-box.rs
2023-01-11 09:32:08 +00:00

15 lines
243 B
Rust

// Check that we report an error if an upcast box is moved twice.
trait Foo { fn dummy(&self); }
fn consume(_: Box<dyn Foo>) {
}
fn foo(b: Box<dyn Foo + Send>) {
consume(b);
consume(b); //~ ERROR use of moved value
}
fn main() {
}