compiler-error-c2571.md

description	title	ms.date	f1_keywords	helpviewer_keywords	ms.assetid
Learn more about: Compiler Error C2571	Compiler Error C2571	11/04/2016	C2571	C2571	c6522616-dee9-4d7d-9bf8-30a7e1deaadf

Compiler Error C2571

'function' : virtual function cannot be in union 'union'

A union is declared with a virtual function. You can declare a virtual function only in a class or structure. Possible resolutions:

1. Change the union to a class or structure.

2. Make the function nonvirtual.

The following sample generates C2571:

// C2571.cpp// compile with: /cunion A { virtualvoidfunc1(); // C2571voidfunc2(); // OK };