1 files changed, 22 insertions, 0 deletions
diff --git a/tests/ui/destructuring-assignment/note-unsupported.rs b/tests/ui/destructuring-assignment/note-unsupported.rs
new file mode 100644
index 00000000000..c69edd42170
--- /dev/null
+++ b/tests/ui/destructuring-assignment/note-unsupported.rs
@@ -0,0 +1,22 @@
+struct S { x: u8, y: u8 }
+
+fn main() {
+    let (a, b) = (1, 2);
+
+    (a, b) = (3, 4);
+    (a, b) += (3, 4); //~ ERROR invalid left-hand side of assignment
+    //~| ERROR binary assignment operation `+=` cannot be applied
+
+    [a, b] = [3, 4];
+    [a, b] += [3, 4]; //~ ERROR invalid left-hand side of assignment
+    //~| ERROR binary assignment operation `+=` cannot be applied
+
+    let s = S { x: 3, y: 4 };
+
+    S { x: a, y: b } = s;
+    S { x: a, y: b } += s; //~ ERROR invalid left-hand side of assignment
+    //~| ERROR binary assignment operation `+=` cannot be applied
+
+    S { x: a, ..s } = S { x: 3, y: 4 };
+    //~^ ERROR functional record updates are not allowed in destructuring assignments
+}