rust/tests/ui/span/issue-11925.rs
2023-01-11 09:32:08 +00:00

14 lines
300 B
Rust

#![feature(unboxed_closures, tuple_trait)]
fn to_fn_once<A:std::marker::Tuple,F:FnOnce<A>>(f: F) -> F { f }
fn main() {
let r = {
let x: Box<_> = Box::new(42);
let f = to_fn_once(move|| &x); //~ ERROR cannot return reference to local data `x`
f()
};
drop(r);
}