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Compiler Error C2084

function 'function' already has a body

The function has already been defined.

In previous versions of Visual C++,

  • The compiler would accept multiple template specializations that resolved to the same actual type, although the additional definitions would never be available. The compiler will now detect these multiple definitions

  • __int32 and int were treated as separate types. The compiler now treats __int32 as a synonym for int. This means that the compiler will detect multiple definitions if a function is overloaded on both __int32 and int and give an error.

The following sample generates C2084:

// C2084.cpp
void Func(int);
void Func(int) {}   // define function
void Func(int) {}   // C2084 second definition

Possible resolution:

// C2084b.cpp
// compile with: /c
void Func(int);
void Func(int) {}