1 files changed, 10 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/ion/bug1057582.js b/js/src/jit-test/tests/ion/bug1057582.js
new file mode 100644
index 000000000..05ca5160a
--- /dev/null
+++ b/js/src/jit-test/tests/ion/bug1057582.js
@@ -0,0 +1,10 @@
+Object.defineProperty(Object.prototype, "0", {configurable: true});
+delete Object.prototype[0];
+
+function makeArray() {
+    var arr = [];
+    for (var i = 0; i < 10; i++)
+        arr.push(true);
+    return arr;
+}
+makeArray();