1 files changed, 70 insertions, 0 deletions
diff --git a/tests/run-pass-valgrind/unsized-locals/by-value-trait-objects-rust-call2.rs b/tests/run-pass-valgrind/unsized-locals/by-value-trait-objects-rust-call2.rs
new file mode 100644
index 000000000..94df2b0b8
--- /dev/null
+++ b/tests/run-pass-valgrind/unsized-locals/by-value-trait-objects-rust-call2.rs
@@ -0,0 +1,70 @@
+#![feature(unsized_locals)]
+#![feature(unboxed_closures)]
+#![feature(tuple_trait)]
+
+pub trait FnOnce<Args: std::marker::Tuple> {
+    type Output;
+    extern "rust-call" fn call_once(self, args: Args) -> Self::Output;
+}
+
+struct A;
+
+impl FnOnce<(String, Box<str>)> for A {
+    type Output = String;
+    extern "rust-call" fn call_once(self, (s1, s2): (String, Box<str>)) -> Self::Output {
+        assert_eq!(&s1 as &str, "s1");
+        assert_eq!(&s2 as &str, "s2");
+        format!("hello")
+    }
+}
+
+struct B(i32);
+
+impl FnOnce<(String, Box<str>)> for B {
+    type Output = String;
+    extern "rust-call" fn call_once(self, (s1, s2): (String, Box<str>)) -> Self::Output {
+        assert_eq!(&s1 as &str, "s1");
+        assert_eq!(&s2 as &str, "s2");
+        format!("{}", self.0)
+    }
+}
+
+struct C(String);
+
+impl FnOnce<(String, Box<str>)> for C {
+    type Output = String;
+    extern "rust-call" fn call_once(self, (s1, s2): (String, Box<str>)) -> Self::Output {
+        assert_eq!(&s1 as &str, "s1");
+        assert_eq!(&s2 as &str, "s2");
+        self.0
+    }
+}
+
+struct D(Box<String>);
+
+impl FnOnce<(String, Box<str>)> for D {
+    type Output = String;
+    extern "rust-call" fn call_once(self, (s1, s2): (String, Box<str>)) -> Self::Output {
+        assert_eq!(&s1 as &str, "s1");
+        assert_eq!(&s2 as &str, "s2");
+        *self.0
+    }
+}
+
+
+fn main() {
+    let (s1, s2) = (format!("s1"), format!("s2").into_boxed_str());
+    let x = *(Box::new(A) as Box<dyn FnOnce<(String, Box<str>), Output = String>>);
+    assert_eq!(x.call_once((s1, s2)), format!("hello"));
+    let (s1, s2) = (format!("s1"), format!("s2").into_boxed_str());
+    let x = *(Box::new(B(42)) as Box<dyn FnOnce<(String, Box<str>), Output = String>>);
+    assert_eq!(x.call_once((s1, s2)), format!("42"));
+    let (s1, s2) = (format!("s1"), format!("s2").into_boxed_str());
+    let x = *(Box::new(C(format!("jumping fox")))
+              as Box<dyn FnOnce<(String, Box<str>), Output = String>>);
+    assert_eq!(x.call_once((s1, s2)), format!("jumping fox"));
+    let (s1, s2) = (format!("s1"), format!("s2").into_boxed_str());
+    let x = *(Box::new(D(Box::new(format!("lazy dog"))))
+              as Box<dyn FnOnce<(String, Box<str>), Output = String>>);
+    assert_eq!(x.call_once((s1, s2)), format!("lazy dog"));
+}