rust/src/test/ui/run-pass/generator/too-live-local-in-immovable-gen.rs

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// Copyright 2018 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
#![feature(generators)]
fn main() {
unsafe {
static move || {
// Tests that the generator transformation finds out that `a` is not live
// during the yield expression. Type checking will also compute liveness
// and it should also find out that `a` is not live.
// The compiler will panic if the generator transformation finds that
// `a` is live and type checking finds it dead.
let a = {
yield ();
4i32
};
&a;
};
}
}