MISRA.UN_OP.OVERLOAD

Unary & operator is overloaded.

MISRA-C++ Rule 5-3-3 (required): The unary & operator shall not be overloaded.

[Undefined 5.3.1(4)]

Rationale

Taking the address of an object of incomplete type where the complete type contains a user declared operator & leads to undefined behaviour.

Example

// A.h
class A
{
public:
   A * operator & ( ); // Non-compliant
};
// f1.cc
class A;

void f ( A & a )
{
   &a; // uses built-in operator &
}

// f2.cc
#include "A.h"

void f2 ( A & a )
{
   &a; // use user-defined operator &
}