有一个g ++等价于Visual Studio的__declspec(novtable)? [英] Is there a g++ equivalent to Visual Studio's __declspec(novtable)?

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问题描述

有一个g ++等价于Visual Studio的 __ declspec(novtable)参数?



基本上,在一个纯虚拟基类中, __ declspec(novtable)参数可以用来抑制一个用于基类的vtable以及在构造函数/析构函数中的vtable初始化/反初始化代码。例如,

  class __declspec(novtable)PureVirtualBaseClass 
{
public:
PureVirtualBaseClass {}
virtual〜PureVirtualBaseClass()= 0;
};

查看 Paul DiLascia的文章了解更多信息。另请参阅我的相关问题

解决方案

我不认为有一个 - 如果有,它会列在类型属性页。 GCC使用类型属性为类型添加额外的注释(如对齐和填充),但没有类型属性等价于 __ declspc(novtable)

我在手册页中也没有看到任何编译器标志与此优化有关。


Is there a g++ equivalent to Visual Studio's __declspec(novtable) argument?

Basically, in a pure virtual base class the __declspec(novtable) argument can be used to suppress the creation of a vtable for the base class as well as vtable initialization/deinitialization code in the contstructor/destructor respectively. E.g.,

class __declspec(novtable) PureVirtualBaseClass
{
    public: 
       PureVirtualBaseClass(){}
       virtual ~PureVirtualBaseClass() = 0;
};

See Paul DiLascia's article for more info. Also see my related question.

解决方案

I don't think there is one -- if there was, it would be listed under the type attributes page of the GCC manual. GCC uses type attributes to add extra annotations to types (such as alignment and padding), but there is no type attribute equivalent to __declspc(novtable) listed there.

I also don't see any compiler flag in the man page relating to this optimization.

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