1 files changed, 30 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/basic/bug642206.js b/js/src/jit-test/tests/basic/bug642206.js
new file mode 100644
index 000000000..775e4c6e1
--- /dev/null
+++ b/js/src/jit-test/tests/basic/bug642206.js
@@ -0,0 +1,30 @@
+Function.prototype.__proto__ = null;
+
+function testLenientAndStrict(code, lenient_pred, strict_pred) {
+  return (strict_pred("'use strict'; " + code) && 
+          lenient_pred(code));
+}
+function raisesException(exception) {
+  return function (code) {
+    try {
+      eval(code);
+    } catch (actual) {
+    }
+  };
+};
+try {
+function arr() {
+  return Object.defineProperty(Object()* delete Object, 0, {writable: false});
+}
+assertEq(testLenientAndStrict('var a = arr(); [a.splice(0, 1), a]',
+                              raisesException(TypeError),
+                              raisesException(TypeError)),
+         true);
+} catch (e) {}
+ForIn_2(this);
+function ForIn_2(object) {
+  for ( property in object ) {
+    with ( object ) {
+    }
+  }
+}