c26460.md

title	ms.date	ms.topic	f1_keywords	helpviewer_keywords	description
C26460	03/22/2018	reference	C26460	C26460	CppCoreCheck rule that enforces C++ Core Guidelines Con.3

C26460 USE_CONST_REFERENCE_ARGUMENTS

The reference argument '%argument%' for function '%function%' can be marked as const (con.3).

Passing an object by reference indicates that the function has the potential modify the object. If that is not the intent of the function, it is better to mark the argument as a const reference.

See also

C++ Core Guidelines con.3.

Example

struct MyStruct
{
    void MemberFn1() const;
    void MemberFn2();
};


void Function1_Helper(const MyStruct&);
void Function1(MyStruct& myStruct) // C26460, see comments below.
{
    myStruct.MemberFn1();       // The member function is marked as const
    Function1_Helper(myStruct); // Function1_Helper takes a const reference
}

void Function2(MyStruct& myStruct)
{
    myStruct.MemberFn2(); // MemberFn2 is non-const and has the potential to modify data
}