Is it standard C++ to assign a member pointer to the address of another member in the constructor initializer?

Does this 开发者_JS百科conform to the standard?

class Foo {
    Bar m_bar;
    Bar * m_woo;
public:
    Foo() : m_bar(42, 123), m_woo(&m_bar) { }
};

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It is correct. What is not correct is dereferencing that pointer before that particular subobject has been fully initialized.