Fix sequence of element access in array builtins.

test/mjsunit/regress/regress-1790.js

+// Copyright 2012 the V8 project authors. All rights reserved.
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+
+// Regression test checking that the sequence of element access in built-in
+// array functions is specification conform (i.e. [[HasProperty]] might return
+// bogus result after [[Get]] has been called).
+
+function CheckSequence(builtin, callback) {
+  var array = [1,2,3];
+  var callback_count = 0;
+  var callback_wrapper = function() {
+    callback_count++;
+    return callback()
+  }
+
+  // Define getter that will delete itself upon first invocation.
+  Object.defineProperty(array, '1', {
+    get: function () { delete array[1]; },
+    configurable: true
+  });
+
+  assertTrue(array.hasOwnProperty('1'));
+  builtin.apply(array, [callback_wrapper, 'argument']);
+  assertFalse(array.hasOwnProperty('1'));
+  assertEquals(3, callback_count);
+}
+
+CheckSequence(Array.prototype.every,       function() { return true; });
+CheckSequence(Array.prototype.filter,      function() { return true; });
+CheckSequence(Array.prototype.forEach,     function() { return 0; });
+CheckSequence(Array.prototype.map,         function() { return 0; });
+CheckSequence(Array.prototype.reduce,      function() { return 0; });
+CheckSequence(Array.prototype.reduceRight, function() { return 0; });
+CheckSequence(Array.prototype.some,        function() { return false; });