1 files changed, 48 insertions, 0 deletions
diff --git a/js/src/tests/non262/regress/regress-452742-01.js b/js/src/tests/non262/regress/regress-452742-01.js
new file mode 100644
index 0000000000..7d1b675f07
--- /dev/null
+++ b/js/src/tests/non262/regress/regress-452742-01.js
@@ -0,0 +1,48 @@
+/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+//-----------------------------------------------------------------------------
+var BUGNUMBER = 452742;
+var summary = 'Do not do overzealous eval inside function optimization in BindNameToSlot';
+var actual = '';
+var expect = '';
+
+
+//-----------------------------------------------------------------------------
+test();
+//-----------------------------------------------------------------------------
+
+function test()
+{
+  printBugNumber(BUGNUMBER);
+  printStatus (summary);
+ 
+  expect = actual = 'No Error';
+
+  var obj = { x: -100 };
+
+  function a(x)
+  {
+    var orig_x = x;
+    var orig_obj_x = obj.x;
+
+    with (obj) { eval("x = x + 10"); }
+
+    if (x !== orig_x)
+      throw "Unexpected mutation of x: " + x;
+    if (obj.x !== orig_obj_x + 10)
+      throw "Unexpected mutation of obj.x: " + obj.x;
+  }
+
+  try
+  {
+    a(0);
+  }
+  catch(ex)
+  {
+    actual = ex + '';
+  }
+  reportCompare(expect, actual, summary);
+}