| function g1(x, args) { |
| args[0] = 88; |
| } |
| |
| // We assume we can optimize arguments access in |f|. |
| // |
| // Then the apply-call invalidates the arguments optimization, |
| // and creates a real arguments object. |
| // |
| // Test that x and y fetch the values from the args object when |
| // that happens. |
| function f1(x, y, o) { |
| var res = 0; |
| for (var i=0; i<50; i++) { |
| res += x + y; |
| if (i > 10) |
| o.apply(null, arguments); |
| } |
| return res; |
| } |
| |
| var o1 = {apply: g1}; |
| assertEq(f1(3, 5, o1), 3630); |
| assertEq(f1(3, 5, o1), 3630); |
| |
| // In strict mode, the arguments object does not alias formals. |
| function g2(x, args) { |
| args[0] = 88; |
| } |
| |
| function f2(x, y, o) { |
| "use strict"; |
| var res = 0; |
| for (var i=0; i<50; i++) { |
| res += x + y; |
| if (i > 10) |
| o.apply(null, arguments); |
| } |
| return res; |
| } |
| |
| var o2 = {apply: g2}; |
| assertEq(f2(3, 5, o2), 400); |
| assertEq(f2(3, 5, o2), 400); |