PerformSelector may cause a leak because its selector is unknown

本人使用的方法，需要针对每个warning进行添加

#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Warc-performSelector-leaks"

id value = [weakSelf performSelector:getSel];//产生warning的代码
 
#pragma clang diagnostic pop

#define SuppressPerformSelectorLeakWarning(Stuff) do { _Pragma("clang diagnostic push") _Pragma("clang diagnostic ignored \"-Warc-performSelector-leaks\"") Stuff; _Pragma("clang diagnostic pop") } while (0)

//如果没有返回结果，可以直接按如下方式调用：
SuppressPerformSelectorLeakWarning(
[_target performSelector:_action withObject:self]
);

//如果要返回结果，可以按如下方式调用:
id result;
SuppressPerformSelectorLeakWarning(
result = [_target performSelector:_action withObject:self]
);

PerformSelector may cause a leak because its selector is unknown

原文：http://blog.csdn.net/u011439689/article/details/47401583