26 lines
563 B
Rust
26 lines
563 B
Rust
//! This test ensures that a mutable reference cannot be passed as a resume argument twice.
|
|
|
|
#![feature(generators, generator_trait)]
|
|
|
|
use std::marker::Unpin;
|
|
use std::ops::{
|
|
Coroutine,
|
|
CoroutineState::{self, *},
|
|
};
|
|
use std::pin::Pin;
|
|
|
|
fn main() {
|
|
let mut thing = String::from("hello");
|
|
|
|
let mut gen = |r| {
|
|
if false {
|
|
yield r;
|
|
}
|
|
};
|
|
|
|
let mut gen = Pin::new(&mut gen);
|
|
gen.as_mut().resume(&mut thing);
|
|
gen.as_mut().resume(&mut thing);
|
|
//~^ cannot borrow `thing` as mutable more than once at a time
|
|
}
|