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// Regression test for #69307
//
// Having an `async { .. foo.await .. }` block appear inside of a `+=`
// expression was causing an ICE due to a failure to save/restore
// state in the AST numbering pass when entering a nested body.
//
// check-pass
// edition:2018
fn block_on<F>(_: F) -> usize {
0
}
fn main() {}
async fn bar() {
let mut sum = 0;
sum += block_on(async {
baz().await;
});
}
async fn baz() {}
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