Add m-esr52 at 52.6.0

1 files changed, 8 insertions, 0 deletions

diff --git a/js/src/jit-test/tests/collections/Array-of-nonconfigurable-1.js b/js/src/jit-test/tests/collections/Array-of-nonconfigurable-1.js
new file mode 100644
index 000000000..d516a1a40
--- /dev/null
+++ b/js/src/jit-test/tests/collections/Array-of-nonconfigurable-1.js
@@ -0,0 +1,8 @@
+// If Array.of tries to overwrite a non-configurable property, it throws a TypeError.
+
+load(libdir + "asserts.js");
+
+function C() {
+    Object.defineProperty(this, 0, {value: "v", configurable: false});
+}
+assertThrowsInstanceOf(() => Array.of.call(C, 1, 2, 3), TypeError);