1 files changed, 14 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/ion/bug1219883.js b/js/src/jit-test/tests/ion/bug1219883.js
new file mode 100644
index 0000000000..27d65f9c59
--- /dev/null
+++ b/js/src/jit-test/tests/ion/bug1219883.js
@@ -0,0 +1,14 @@
+function test() {
+    var arr = new Int8Array(400);
+    var idx = "384";
+    arr[idx] = 9;
+    assertEq(arr[idx], 9);
+    idx = "1000";
+    arr[idx] = 10;
+    assertEq(arr[idx], undefined);
+    idx = "-1";
+    arr[idx] = 0;
+    assertEq(arr[idx], undefined);
+}
+for (var i=0; i<10; i++)
+    test();