1 files changed, 16 insertions, 0 deletions
diff --git a/js/src/tests/Intl/getCanonicalLocales-overridden-push.js b/js/src/tests/Intl/getCanonicalLocales-overridden-push.js
new file mode 100644
index 000000000..36f53ebf0
--- /dev/null
+++ b/js/src/tests/Intl/getCanonicalLocales-overridden-push.js
@@ -0,0 +1,16 @@
+// |reftest| skip-if(!this.hasOwnProperty("Intl"))
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// Tests the getCanonicalLocales function for overriden Array.push.
+
+Array.prototype.push = () => { throw 42; };
+
+// must not throw 42, might if push is used
+var arr = Intl.getCanonicalLocales(["en-US"]);
+
+assertEqArray(arr, ["en-US"]);
+
+if (typeof reportCompare === 'function')
+    reportCompare(0, 0);