1 files changed, 17 insertions, 0 deletions
diff --git a/tests/ui/generator/issue-57478.rs b/tests/ui/generator/issue-57478.rs
new file mode 100644
index 000000000..91407ea18
--- /dev/null
+++ b/tests/ui/generator/issue-57478.rs
@@ -0,0 +1,17 @@
+// check-pass
+// compile-flags: -Zdrop-tracking
+
+#![feature(negative_impls, generators)]
+
+struct Foo;
+impl !Send for Foo {}
+
+fn main() {
+    assert_send(|| {
+        let guard = Foo;
+        drop(guard);
+        yield;
+    })
+}
+
+fn assert_send<T: Send>(_: T) {}