C6504
Visual Studio 2012
warning C6504: invalid annotation: property may only be used on values of pointer, pointer-to-member, or array type
This warning indicates the use of a property on an incompatible data type. For more information about data types supported by properties, see [NIB]Annotation Properties.
The following code generates this warning because the _Null_ property cannot be used on the reference data type.
#include<sal.h> class Point { public: // members }; void f(_Pre_ _Null_ Point& pt) { // code ... }
To correct this warning, use the following code:
#include<sal.h> class Point { public: // members }; void f(_Pre_ _Null_ Point* pt) { // code ... }
The defective code shown earlier also generates warning C6516 because property conflicts resulted in an invalid annotation.
