1 files changed, 18 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/ion/bug1509482.js b/js/src/jit-test/tests/ion/bug1509482.js
new file mode 100644
index 0000000000..26bda3b544
--- /dev/null
+++ b/js/src/jit-test/tests/ion/bug1509482.js
@@ -0,0 +1,18 @@
+let singleton = {x: 1};
+
+let holder = {sing_prop: singleton}
+
+function makeChain(n, base) {
+    var curr = base;
+    for (var i = 0; i < n; i++) {
+	curr = Object.create(curr);
+    }
+    return curr;
+}
+let chain = makeChain(1000, holder);
+
+var x = 0;
+for (var i = 0; i < 1111; i++) {
+    x += chain.sing_prop.x;
+    singleton.x = -singleton.x // Don't want it to be a constant.
+}