Compiler Error C3867
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The latest version of this topic can be found at Compiler Error C3867.
func': function call missing argument list; use '&func' to create a pointer to member
You tried to take the address of a member function without qualifying the member function with its class name and the address-of operator.
This error can also be generated as a result of compiler conformance work that was done for Visual C++ 2005: enhanced pointer-to-member conformance. Code that compiled prior to Visual C++ 2005 will now generate C3867.
C3867 can be issued from the compiler with a misleading suggested resolution. Whenever possible, use the most derived class.
The following sample generates C3867 and shows how to fix it.
// C3867_1.cpp
// compile with: /c
struct Base {
protected:
void Test() {}
};
class Derived : public Base {
virtual void Bar();
};
void Derived::Bar() {
void (Base::*p1)() = Test; // C3867
&Derived::Test; // OK
}
The following sample generates C3867 and shows how to fix it.
// C3867_2.cpp
#include<stdio.h>
struct S {
char *func() {
return "message";
}
};
class X {
public:
void f() {}
};
int main() {
X::f; // C3867
// OK
X * myX = new X;
myX->f();
S s;
printf_s("test %s", s.func); // C3867
printf_s("test %s", s.func()); // OK
}
The following sample generates C3867 and shows how to fix it.
// C3867_3.cpp
class X {
public:
void mf(){}
};
int main() {
void (X::*pmf)() = X::mf; // C3867
// try the following line instead
void (X::*pmf2)() = &X::mf;
}
The following sample generates C3867.
// C3867_4.cpp
// compile with: /c
class A {
public:
void f(int) {}
typedef void (A::*TAmtd)(int);
struct B {
TAmtd p;
};
void g() {
B b1;
b1.p = f; // C3867
}
};
The following sample generates C3867.
// C3867_5.cpp
// compile with: /EHsc
#include <iostream>
class Testpm {
public:
void m_func1() {
std::cout << m_num << "\tm_func1\n";
}
int m_num;
typedef void (Testpm::*pmfn1)();
void func(Testpm* p);
};
void Testpm::func(Testpm* p) {
pmfn1 s = m_func1; // C3867
pmfn1 s2 = &Testpm::m_func1; // OK
(p->*s2)();
}
int main() {
Testpm *pTestpm = new Testpm;
pTestpm->m_num = 10;
pTestpm->func(pTestpm);
}