1 files changed, 23 insertions, 0 deletions
diff --git a/js/src/tests/Intl/getCanonicalLocales-overridden-species.js b/js/src/tests/Intl/getCanonicalLocales-overridden-species.js
new file mode 100644
index 000000000..858735b58
--- /dev/null
+++ b/js/src/tests/Intl/getCanonicalLocales-overridden-species.js
@@ -0,0 +1,23 @@
+// |reftest| skip-if(!this.hasOwnProperty("Intl"))
+
+// Tests the getCanonicalLocales function for overriden Array[Symbol.species].
+
+Object.defineProperty(Array, Symbol.species, {
+    value: function() {
+        return new Proxy(["?"], {
+            get(t, pk, r) {
+                return Reflect.get(t, pk, r);
+            },
+            defineProperty(t, pk) {
+                return true;
+            }
+        });
+    }
+});
+
+var arr = Intl.getCanonicalLocales("de-x-private");
+
+assertEqArray(arr, ["de-x-private"]);
+
+if (typeof reportCompare === "function")
+    reportCompare(0, 0);