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-rw-r--r--tests/ui/async-await/issue-64130-2-send.rs23
1 files changed, 23 insertions, 0 deletions
diff --git a/tests/ui/async-await/issue-64130-2-send.rs b/tests/ui/async-await/issue-64130-2-send.rs
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index 00000000000..7a6e5952cb9
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+++ b/tests/ui/async-await/issue-64130-2-send.rs
@@ -0,0 +1,23 @@
+#![feature(negative_impls)]
+// edition:2018
+
+// This tests the specialized async-await-specific error when futures don't implement an
+// auto trait (which is specifically Send) due to some type that was captured.
+
+struct Foo;
+
+impl !Send for Foo {}
+
+fn is_send<T: Send>(t: T) { }
+
+async fn bar() {
+    let x = Foo;
+    baz().await;
+}
+
+async fn baz() { }
+
+fn main() {
+    is_send(bar());
+    //~^ ERROR future cannot be sent between threads safely
+}