src/third_party/v8/test/mjsunit/getter-in-prototype.js

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// Test that exceptions are not thrown when setting properties on object
// that have only a getter in a prototype object, except when we are in strict
// mode where exceptsions should be thrown.

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

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

assertThrows(function() { 'use strict'; o.x = 42; });
assertThrows(function() { 'use strict'; o[0] = 42; });

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

assertDoesNotThrow(f);

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

function g_strict() {
  'use strict';
  eval('1');
  x = 42;
}

assertDoesNotThrow(g);
assertThrows(g_strict);

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

function g2_strict() {
  'use strict';
  this[0] = 42;
}

assertDoesNotThrow(g2);
assertThrows(g2_strict);