我有一些代码放在析构函数中以确保它在正常退出和异常堆栈展开时运行:structwithProtectedClose{~withProtectedClose(){//Dosomecleanuphere...}};voidtest(){withProtectedCloseclose;//Dosomeworkbeforeclosing}然而g++编译器(g++(GCC)3.4.620060404(RedHat3.4.6-11))正在提示:test.cpp:Infunction`voidtest()':test.cpp:28:warning:unusedvariable'close'我可以通过