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C6511

warning C6511: invalid annotation: MustCheck property must be Yes or No

Note Note

This warning occurs only in code that is using a deprecated version of the source-code annotation language (SAL). We recommend that you port your code to use the latest version of SAL. For more information, see Using SAL Annotations to Reduce C/C++ Code Defects.

This warning indicates an invalid value for MustCheck property was specified. The only valid values for this property are: Yes and No.

The following code generates this warning:

// C
#include <CodeAnalysis\SourceAnnotations.h>
[returnvalue:SA_Post(MustCheck=SA_Maybe)] int f();

// C++
#include <CodeAnalysis\SourceAnnotations.h>
using namespace vc_attributes;
[returnvalue:Post(MustCheck=Maybe)] int f();

To correct this warning, a valid value for MustCheck property is used in the following code:

// C
#include <CodeAnalysis\SourceAnnotations.h>
[returnvalue:SA_Post(MustCheck=SA_Yes)] int f();

// C++  
#include <CodeAnalysis\SourceAnnotations.h>
using namespace vc_attributes;
[returnvalue:Post(MustCheck=Yes)] int f();

Reference

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