1 files changed, 9 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/basic/bug569849.js b/js/src/jit-test/tests/basic/bug569849.js
new file mode 100644
index 000000000..18598ba3b
--- /dev/null
+++ b/js/src/jit-test/tests/basic/bug569849.js
@@ -0,0 +1,9 @@
+function g() {
+    function f(a) {
+        delete a.x;
+    }
+    for each(let w in [Infinity, String()]) {
+        let i = f(w);
+    }
+}
+g();