function shouldBe(actual, expected) { if (actual !== expected) throw new Error('bad value: ' + actual); } function test(array) { return array.slice(0); } noInline(test); for (var i = 0; i < 1e5; ++i) { var array = [i, i, i]; var result = test(array); shouldBe(array !== result, true); shouldBe(result.length, 3); for (var j = 0; j < 3; ++j) shouldBe(result[j], i); } function test2(array, i) { return array.slice(0, i); } noInline(test2); for (var i = 0; i < 1e5; ++i) { var array = [i, i, i]; var result = test2(array, 2); shouldBe(array !== result, true); shouldBe(result.length, 2); for (var j = 0; j < 2; ++j) shouldBe(result[j], i); }