C6387
warning C6387: <argument> may be <value>: this does not adhere to the specification for the function <function name>: Lines: x, y
This warning is raised if an annotated function parameter is being passed an unexpected value. For example, passing a potentially null value to a parameter that is marked with _In_ annotation generates this warning.
Example
The following code generates this warning because a null parameter is passed to f(char *):
#include <sal.h>
_Post_ _Null_ char * g();
void f(_In_ char *pch);
void main()
{
char *pCh = g();
f(pCh); // Warning C6387
}
To correct this warning, use the following code:
#include <sal.h>
_Post_ _Notnull_ char * g();
void f(_In_ char *pch);
void main()
{
char *pCh = g();
f(pCh);
}
See Also
Reference
strlen, wcslen, _mbslen, _mbslen_l, _mbstrlen, _mbstrlen_l