michael@0: function checkConstruct(thing, buggy) {
michael@0:     try {
michael@0:         new thing();
michael@0:     } catch (e) {}
michael@0: }
michael@0: var boundFunctionPrototype = Function.prototype.bind();
michael@0: checkConstruct(boundFunctionPrototype, true);
michael@0: var boundBuiltin = Math.sin.bind();
michael@0: checkConstruct(boundBuiltin, true);