| function assert(b) { | |
| if (!b) | |
| throw new Error; | |
| } | |
| let p = {}; | |
| let o = {}; | |
| o.__proto__ = p; | |
| for (let i = 0; i < 1000; ++i) { | |
| p["p" + i] = i; | |
| } | |
| p.foo = 42; | |
| delete p.p0; | |
| delete p.p1; | |
| delete p.p2; | |
| delete p.p3; | |
| delete p.p4; | |
| delete p.p5; | |
| for (let i = 0; i < 10; ++i) { | |
| p.foo = i; | |
| assert(o.foo === i); | |
| } |