1.undeclare selector
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wundeclared-selector"
//your code ...
#pragma clang diagnostic po
2.
#pragma clang diagnostic push #pragma clang diagnostic ignored "-Wdeprecated-declarations" #pragma clang diagnostic pop
3.
#pragma clang diagnostic push #pragma clang diagnostic ignored "-Warc-performSelector-leaks" #pragma clang diagnostic pop
4.
#pragma clang diagnostic push #pragma clang diagnostic ignored "-Warc-retain-cycles" #pragma clang diagnostic pop
5.
#pragma clang diagnostic push #pragma clang diagnostic ignored "-Wgnu" #pragma clang diagnostic pop
6.
#pragma clang diagnostic push #pragma clang diagnostic ignored "-Wunreachable-code" #pragma clang diagnostic pop
原文：http://www.cnblogs.com/littleplayer/p/4366391.html