Was this page helpful?
Your feedback about this content is important. Let us know what you think.
Additional feedback?
1500 characters remaining
Compiler Warning (level 1) C4912
Collapse the table of content
Expand the table of content

Compiler Warning (level 1) C4912

Error Message

'attribute': attribute has undefined behavior on a nested UDT

Attributes that apply to nested UDTs (user-defined type, which could be a typedef, union, or struct) may be ignored.

The following code shows how this warning would be generated:

// C4912.cpp
// compile with: /W1
#include <windows.h>
[emitidl, module(name="xx")];

[object, uuid("00000000-0000-0000-0000-000000000002")]
__interface IMy
{
};

[coclass, default(IMy), appobject, uuid("00000000-0000-0000-0000-000000000001")]
class CMy : public IMy
{
   [export, v1_enum] typedef enum myEnum { k3_1 = 1, k3_2 = 2 } myEnumv;   // C4912
};
int main()
{
}

Community Additions

ADD
Show:
© 2015 Microsoft