Re: [Boost-users] A question about shared_ptr(Zhuo Hao)

Zhuo Hao wrote:

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I wonder how it is implemented that we cannot pass zero as a pointer to Y in the constructor of shared_ptr.

Consider: template <class U> class P { public: template <class V> P(V * v) : u(v) {} private: U *u; }; Now "P<CMutex> p1(0);" will not compile but "P<CMutex> p1(new CMutex);" will. -delfin