delete * p是delete [] p的替代方法吗? [英] Is delete *p an alternative to delete [] p?

问题描述

以下代码来自 Microsoft文档

int (**p) () = new (int (*[7]) ());
delete *p;

我认为应该在这里使用delete [] p.

I think that delete [] p should be used here instead.

delete *p与delete [] p相同吗?

推荐答案

该代码是无效的C ++，因为只能删除指向对象的指针. *p具有类型int (*)()，它是函数指针，而不是指向对象的指针.

That code is invalid C++, because only pointers-to-objects can be deleted. *p has type int (*)(), which is a function pointer, not a pointer to an object.

即使在许可模式下，即使MSVC本身也不会编译它:

Even MSVC itself does not compile it, even in permissive mode:

error C2541: 'delete': cannot delete objects that are not pointers

他们应该改用delete [].

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