Synopsis

(Advisory) A project should not contain unused Object definitions.

Enabled by default

No

Severity/Certainty

Low/Medium

Full description

Unused external object definition.

This is a link analysis check.

Coding standards

Code examples

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

extern int unused_var; /* Non-compliant */

void example(void) {
}

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

extern int used_var; /* Compliant */

int example(void) {
  return used_var; 
}