例子 1class __declspec(novtable) A{public:virtual void funA(){}; };classs C: public A //C中有没有虚函数表？ 肯定有吧， __declspec(novtable)能干啥？{};例子 2class __declspec(novtable) A{public:virtual void funA(){}; };classs B{public:virtual void funB(){};};class D :public A, public B //此时呢? 虚函数表有如何呢?{virtual void funB(){int i=2;};};
[解决办法] 另外,5楼的同学.不知道你从哪儿看的novtable是让编译器静态绑定的...搞我的以为我记错了.. This is a __declspec extended attribute.
This form of __declspec can be applied to any class declaration, but should only be applied to pure interface classes, that is, classes that will never be instantiated on their own. The __declspec stops the compiler from generating code to initialize the vfptr in the constructor(s) and destructor of the class. In many cases, this removes the only references to the vtable that are associated with the class and, thus, the linker will remove it. Using this form of __declspec can result in a significant reduction in code size.
If you attempt to instantiate a class marked with novtable and then access a class member, you will receive an access violation (AV).
