Compiler Error C2640


The new home for Visual Studio documentation is Visual Studio 2017 Documentation on

The latest version of this topic can be found at Compiler Error C2640.

identifier' : __based modifier illegal on reference

The __based modifier can be used on pointers only.

The following sample generates C2640:

// C2640.cpp  
void f(int i) {  
    void *vp;  
    int _based(vp) &vr = I;  // C2640