1 files changed, 13 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/fields/private-right-side-2.js b/js/src/jit-test/tests/fields/private-right-side-2.js
new file mode 100644
index 0000000000..08958ff303
--- /dev/null
+++ b/js/src/jit-test/tests/fields/private-right-side-2.js
@@ -0,0 +1,13 @@
+class B {
+  constructor(obj) { return obj; }
+}
+
+class C extends B {
+  #f = 1;
+  static m(obj) {
+    obj.#f = new C(obj);  // ok, obj.#f brand check happens after RHS is evaluated
+    assertEq(obj.#f, obj);
+  }
+}
+
+C.m({});