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-rw-r--r--tests/ui/dropck/coroutine-liveness-2.rs23
1 files changed, 23 insertions, 0 deletions
diff --git a/tests/ui/dropck/coroutine-liveness-2.rs b/tests/ui/dropck/coroutine-liveness-2.rs
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+++ b/tests/ui/dropck/coroutine-liveness-2.rs
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+// check-pass
+// edition: 2021
+
+// regression test found while working on #117134.
+use std::future;
+
+fn main() {
+ let mut recv = future::ready(());
+ let _combined_fut = async {
+ let _ = || read(&mut recv);
+ };
+
+ let _uwu = (String::new(), _combined_fut);
+ // Dropping a coroutine as part of a more complex
+ // types should not add unnecessary liveness
+ // constraints.
+
+ drop(recv);
+}
+
+fn read<F: future::Future>(_: &mut F) -> F::Output {
+ todo!()
+}