1 files changed, 15 insertions, 0 deletions
diff --git a/src/test/ui/binop/issue-3820.rs b/src/test/ui/binop/issue-3820.rs
new file mode 100644
index 000000000..b987a90b2
--- /dev/null
+++ b/src/test/ui/binop/issue-3820.rs
@@ -0,0 +1,15 @@
+struct Thing {
+    x: isize
+}
+
+impl Thing {
+    fn mul(&self, c: &isize) -> Thing {
+        Thing {x: self.x * *c}
+    }
+}
+
+fn main() {
+    let u = Thing {x: 2};
+    let _v = u.mul(&3); // This is ok
+    let w = u * 3; //~ ERROR cannot multiply `Thing` by `{integer}`
+}