function Foo(a, b) { var array = []; for (var i = 0; i < arguments.length; ++i) array.push(arguments[i]); this.f = {a:a, b:b, c:array}; } noInline(Foo); function bar(array) { return new Foo(...array); } noInline(bar); function checkEqual(a, b) { if (a.a != b.a) throw "Error: bad value of a: " + a.a + " versus " + b.a; if (a.b != b.b) throw "Error: bad value of b: " + a.b + " versus " + b.b; if (a.c.length != b.c.length) throw "Error: bad value of c, length mismatch: " + a.c + " versus " + b.c; for (var i = a.c.length; i--;) { if (a.c[i] != b.c[i]) throw "Error: bad value of c, mismatch at i = " + i + ": " + a.c + " versus " + b.c; } } function test(array) { var expected = {a:array[0], b:array[1], c:array}; var actual = bar(array).f; checkEqual(actual, expected); } for (var i = 0; i < 10000; ++i) { var array = []; for (var j = 0; j < i % 6; ++j) array.push(j); test(array); }