V607. Ownerless expression 'Foo'.

The analyzer has detected a potentially redundant expression. Such constructs may occur when the result of a variable assignment, method call, operator, or similar operation is never used. Such cases may occur as the result of incomplete refactoring.

The example:

void Run(int &a, int b, int c, bool X)
{
  if (X)
    a = b + c;
  else
    b - c; 
}

The program text is incomplete because of a typo. It compiles well but has no practical sense.

The fixed code:

void Run(int &a, int b, int c, bool X)
{
  if (X)
    a = b + c;
  else
    a = b - c; 
}

Another example:

typedef struct data_format {
   int day;
   int month;
};

In this case, the typedef keyword is used incorrectly because no alias name is specified for the declared type. As a result, it does not perform its intended function and is redundant.

The fixed code:

typedef struct data_format {
   int day;
   int month;
} data_format_t; //< = Added alias for typedef

Exceptions:

The analyzer does not report redundant constructs in certain cases, such as when a compiler warning about unused variables is deliberately suppressed:

void Foo(int a, int b)
{
  a, b;
}

In this example, the analyzer does not issue the V607 warning.

This diagnostic is classified as:

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