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#![feature(coroutines)]
#![allow(dropping_copy_types)]
//@ run-pass
use std::mem::size_of_val;
fn main() {
// Coroutine taking a `Copy`able resume arg.
let gen_copy = |mut x: usize| {
loop {
drop(x);
x = yield;
}
};
// Coroutine taking a non-`Copy` resume arg.
let gen_move = |mut x: Box<usize>| {
loop {
drop(x);
x = yield;
}
};
// Neither of these coroutines have the resume arg live across the `yield`, so they should be
// 1 Byte in size (only storing the discriminant)
assert_eq!(size_of_val(&gen_copy), 1);
assert_eq!(size_of_val(&gen_move), 1);
}
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