1 files changed, 10 insertions, 0 deletions
diff --git a/tests/source/expr.rs b/tests/source/expr.rs
index 8a6e6f1aa2b..21f8a4a4366 100644
--- a/tests/source/expr.rs
+++ b/tests/source/expr.rs
@@ -567,3 +567,13 @@ fn foo() {
     }
         .await;
 }
+
+fn underscore() {
+        _= 1;
+        _;
+        [  _,a,_  ] = [1, 2, 3];
+    (a,   _) = (8, 9);
+    TupleStruct(  _, a) = TupleStruct(2, 2);
+
+    let _  : usize = foo(_, _);
+}