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add a miri regression test update failing tests (join sizes increased due to fix)
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Original file line number | Diff line number | Diff line change |
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use futures::executor::block_on; | ||
use futures::future::Future; | ||
use std::task::Poll; | ||
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/// This tests verifies (through miri) that self-referencing | ||
/// futures are not invalidated when joining them. | ||
#[test] | ||
fn futures_join_macro_self_referential() { | ||
block_on(async { futures::join!(yield_now(), trouble()) }); | ||
} | ||
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async fn trouble() { | ||
let lucky_number = 42; | ||
let problematic_variable = &lucky_number; | ||
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yield_now().await; | ||
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// problematic dereference | ||
let _ = { *problematic_variable }; | ||
} | ||
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fn yield_now() -> impl Future<Output = ()> { | ||
let mut yielded = false; | ||
std::future::poll_fn(move |cx| { | ||
if core::mem::replace(&mut yielded, true) { | ||
Poll::Ready(()) | ||
} else { | ||
cx.waker().wake_by_ref(); | ||
Poll::Pending | ||
} | ||
}) | ||
} |