1 files changed, 25 insertions, 0 deletions
diff --git a/tests/ui/traits/new-solver/unsize-good.rs b/tests/ui/traits/new-solver/unsize-good.rs
new file mode 100644
index 000000000..87ed9cfd1
--- /dev/null
+++ b/tests/ui/traits/new-solver/unsize-good.rs
@@ -0,0 +1,25 @@
+// compile-flags: -Ztrait-solver=next
+// check-pass
+
+#![feature(unsized_tuple_coercion)]
+
+trait Foo {}
+
+impl Foo for i32 {}
+
+fn main() {
+    // Unsizing via struct
+    let _: Box<dyn Foo> = Box::new(1i32);
+
+    // Slice unsizing
+    let y = [1, 2, 3];
+    let _: &[i32] = &y;
+
+    // Tuple unsizing
+    let hi = (1i32,);
+    let _: &(dyn Foo,) = &hi;
+
+    // Dropping auto traits
+    let a: &(dyn Foo + Send) = &1;
+    let _: &dyn Foo = a;
+}