1 files changed, 11 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/basic/bug566136.js b/js/src/jit-test/tests/basic/bug566136.js
new file mode 100644
index 000000000..2d5f7ffb0
--- /dev/null
+++ b/js/src/jit-test/tests/basic/bug566136.js
@@ -0,0 +1,11 @@
+load(libdir + "immutable-prototype.js");
+
+Object.prototype.length = 0;
+if (globalPrototypeChainIsMutable())
+    this.__proto__ = [];
+
+function f() {
+    eval('Math');
+    length = 2;
+}
+f();