升级GCC 4.6后的warning: ”variable set but not used“

http://xifage.com/gcc-4-6-warning-variable-set-but-not-used/

http://blog.163.com/muren20062094@yeah/blog/static/16184441620117144138999/

===========================================

这是将gcc从4.3升级到4.6的新特性，诸位不必惊慌！