test/mjsunit/regress/regress-1151.js

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// Test that we do not try to create prototypes on objects that has the,
// should_have_prototype flag set to false.

__defineSetter__.__proto__ = function() {};
__defineSetter__['prototype']

eval.__proto__ = function () { };
eval['prototype'] = {};

// Test that we are compatible with Safari on prototypes set locally and
// on the actual prototype set using __proto__ on objects that has the
// should_have_prototype set to false.
function f() { return 42; }
f.prototype = 43;
__defineGetter__.__proto__ = f;

// Regression test for not returning undefined.
assertEquals(__defineGetter__.prototype, 43);

// Regression test for not crashing.
__defineGetter__.prototype = "foo";
assertEquals(__defineGetter__.prototype, "foo");