lua_pcall函數(shù)的文檔：

If?msgh?is 0, then the error object returned on the stack is exactly the original error object. Otherwise,?msgh?is the stack index of a?message handler. (This index cannot be a pseudo-index.) In case of runtime errors, this handler will be called with the error object and its return value will be the object returned on the stack by?lua_pcall.

大家看這里，?this handler will be called with the error object and its return value will be the object?returned on the stack by?lua_pcall.

error objec是什么？？？？什么類型？？艸你媽的不能說清楚啊？

后邊its return value，it是指？？你他媽不會(huì)說話是吧，傻逼！