michael@0: 
michael@0: /* Test pop/shift compiler paths. */
michael@0: 
michael@0: function a() {
michael@0:   var x = [];
michael@0:   for (var i = 0; i < 50; i++)
michael@0:     x.push(i);
michael@0:   for (var j = 0; j < 100; j++) {
michael@0:     var z = x.shift();
michael@0:     if (j < 50)
michael@0:       assertEq(z, j);
michael@0:     else
michael@0:       assertEq(z, undefined);
michael@0:   }
michael@0: }
michael@0: a();
michael@0: 
michael@0: function b() {
michael@0:   var x = [];
michael@0:   for (var i = 0; i < 50; i++)
michael@0:     x.push(i);
michael@0:   for (var j = 0; j < 100; j++) {
michael@0:     var z = x.pop();
michael@0:     if (j < 50)
michael@0:       assertEq(z, 49 - j);
michael@0:     else
michael@0:       assertEq(z, undefined);
michael@0:   }
michael@0: }
michael@0: b();