forwardingTargetForSelector返回self不会死循环吧。

[ryanzhuang]

如题，亲测

[Kevin775263419]

那么到底会不会死循环

[RandomNameForGithub]

苹果开发者文档：https://developer.apple.com/documentation/objectivec/nsobject/1418855-forwardingtargetforselector

"Obviously if you return self from this method, the code would just fall into an infinite loop."

显然，如果你在此方法中返回 self，代码将会陷入一个无限循环。