| description | title | ms.date | f1_keywords | helpviewer_keywords | ms.assetid | ||
|---|---|---|---|---|---|---|---|
Learn more about: Compiler Error C2570 | Compiler Error C2570 | 11/04/2016 |
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| d65d0b32-2fac-464a-bcdf-0ebcedf3bf32 |
'identifier' : union cannot have base classes
A union derives from a class, structure, or union. This is not allowed. Declare the derived type as a class or structure instead.
The following sample generates C2570:
// C2570.cpp// compile with: /cclassbase {}; union hasPubBase : public base {}; // C2570union hasNoBase {}; // OK