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C28723

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warning C28723: Unannotated buffer in function definition that has no corresponding declaration

This warning indicates that a buffer passed as a function parameter or returned by a function should be annotated with the Microsoft Source Code Annotation language (SAL). Static analysis tools can use such annotations to detect buffer overruns.

Currently, only non-constant buffers are diagnosed with this warning.

Example

The following code example generates this warning.

    int foo( LPTSTR buffer, size_t cch )
{
    ...
}

The following code example avoids this warning.

    int foo( _Out_writes_(cch) LPTSTR buffer, size_t cch )
{
    ...
}