1 files changed, 22 insertions, 0 deletions
diff --git a/src/test/ui/unsized-locals/by-value-trait-object-safety.rs b/src/test/ui/unsized-locals/by-value-trait-object-safety.rs
new file mode 100644
index 000000000..d0ba6944a
--- /dev/null
+++ b/src/test/ui/unsized-locals/by-value-trait-object-safety.rs
@@ -0,0 +1,22 @@
+#![feature(unsized_locals)]
+//~^ WARN the feature `unsized_locals` is incomplete
+
+pub trait Foo {
+    fn foo(self) -> String
+    where
+        Self: Sized;
+}
+
+struct A;
+
+impl Foo for A {
+    fn foo(self) -> String {
+        format!("hello")
+    }
+}
+
+fn main() {
+    let x = *(Box::new(A) as Box<dyn Foo>);
+    x.foo();
+    //~^ERROR the `foo` method cannot be invoked on a trait object
+}