test/mjsunit/regress/regress-1233.js

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// Test that Object.freeze and Object.getOwnPropertyDescriptor do not
// call toString or valueOf on members of the object.

// See http://code.google.com/p/v8/issues/detail?id=1233.


var delicate = new Object();
delicate.toString = function(){ throw Error("toString"); };
delicate.valueOf = function(){ throw Error("valueOf"); };

var x = { foo: delicate };

var status = "fail";
try {
  Object.getOwnPropertyDescriptor(x, "foo");
  Object.freeze(x);
  status = "succeed";
} catch (e) {}

assertEquals("succeed", status);