blob: 0606ea71cdf372a84ef2f504543068146144f2a8 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
|
//! 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::{
Generator,
GeneratorState::{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
}
|
