c++ - Can virtual functions be constexpr? -


can virtual functions x::f() in following code

struct x  {     constexpr virtual int f() const      {         return 0;     } };

be constexpr?

no. [dcl.constexpr]/3 (7.1.5, "the constexpr specifier"):

the definition of constexpr function shall satisfy following requirements:

— shall not virtual


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