Synopsis

(Advisory) Variables with limited visibility should be used at least once

Enabled by default

No

Severity/Certainty

Low/Medium

Full description

Found unused variable

Coding standards

This check does not correspond to any coding standard rules.

Code examples

The following code example fails the check and will give a warning:

class Unused { }; // No user-provided constructor or destructor

namespace
{
  Unused c; // Non-compliant - unused
}

void example() {
}

The following code example passes the check and will not give a warning about this issue:

class Used {
  public: 
    void DoSomething() { };
};

namespace
{
  Used c; // Compliant - used
}

void example() {
  c.DoSomething();
}