Error on using `yield` without also using `#[coroutine]` on the closure

And suggest adding the `#[coroutine]` to the closure

1 files changed, 3 insertions, 3 deletions

diff --git a/tests/coverage/yield.coverage b/tests/coverage/yield.coverage
index d7e455f211e..e2fc9196d24 100644
--- a/tests/coverage/yield.coverage
+++ b/tests/coverage/yield.coverage
@@ -1,11 +1,11 @@
-   LL|       |#![feature(coroutines, coroutine_trait)]
+   LL|       |#![feature(coroutines, coroutine_trait, stmt_expr_attributes)]
    LL|       |#![allow(unused_assignments)]
    LL|       |
    LL|       |use std::ops::{Coroutine, CoroutineState};
    LL|       |use std::pin::Pin;
    LL|       |
    LL|      1|fn main() {
-   LL|      1|    let mut coroutine = || {
+   LL|      1|    let mut coroutine = #[coroutine] || {
    LL|      1|        yield 1;
    LL|      1|        return "foo";
    LL|      1|    };
@@ -19,7 +19,7 @@
    LL|      0|        _ => panic!("unexpected value from resume"),
    LL|       |    }
    LL|       |
-   LL|      1|    let mut coroutine = || {
+   LL|      1|    let mut coroutine = #[coroutine] || {
    LL|      1|        yield 1;
    LL|      1|        yield 2;
    LL|      0|        yield 3;