GCC 对C语言的扩展

http://www.cnblogs.com/emituofo/archive/2012/07/20/2600995.html

http://blog.csdn.net/andyhuabing/article/details/42640705

https://my.oschina.net/senmole/blog/50710

http://blog.csdn.net/shangzh/article/details/39398577

http://nathanxu.blog.51cto.com/50836/56661/

http://nathanxu.blog.51cto.com/50836/6027/

http://nathanxu.blog.51cto.com/50836/56658/