1 files changed, 39 insertions, 0 deletions
diff --git a/src/test/ui/async-await/partial-initialization-across-await.rs b/src/test/ui/async-await/partial-initialization-across-await.rs
new file mode 100644
index 000000000..7577aee3f
--- /dev/null
+++ b/src/test/ui/async-await/partial-initialization-across-await.rs
@@ -0,0 +1,39 @@
+// Test that we don't allow awaiting from an async fn while a local is partially
+// initialized.
+
+// edition:2018
+
+struct S { x: i32, y: i32 }
+struct T(i32, i32);
+
+async fn noop() {}
+
+async fn test_tuple() {
+    let mut t: (i32, i32);
+    t.0 = 42; //~ ERROR E0381
+    noop().await;
+    t.1 = 88;
+    let _ = t;
+}
+
+async fn test_tuple_struct() {
+    let mut t: T;
+    t.0 = 42; //~ ERROR E0381
+    noop().await;
+    t.1 = 88;
+    let _ = t;
+}
+
+async fn test_struct() {
+    let mut t: S;
+    t.x = 42; //~ ERROR E0381
+    noop().await;
+    t.y = 88;
+    let _ = t;
+}
+
+fn main() {
+    let _ = test_tuple();
+    let _ = test_tuple_struct();
+    let _ = test_struct();
+}