function foo(a, b) { return a.f + b.f; } noInline(foo); function test(a, b, c) { var result = foo({f:a}, {f:b}); if (result != c) throw "Error: expected " + c + " but got: " + result; } for (var i = 0; i < 100000; ++i) test(true, 42, 43); // Now try some unexpected things, in descending order of possible badness. test(true, 2147483647, 2147483648); test(false, 42, 42); test(1, 2, 3); test(true, true, 2); test(1.5, 1.5, 3);