test/mjsunit/getter-in-prototype.js

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// Test that exceptions are thrown when setting properties on object
// that have only a getter in a prototype object.

var o = {};
var p = {};
p.__defineGetter__('x', function(){});
p.__defineGetter__(0, function(){});
o.__proto__ = p;

assertThrows("o.x = 42");
assertThrows("o[0] = 42");

function f() {
  with(o) {
    x = 42;
  }
}
assertThrows("f()");

__proto__ = p;
function g() {
  eval('1');
  x = 42;
}
assertThrows("g()");

__proto__ = p;
function g2() {
  this[0] = 42;
}
assertThrows("g2()");