Synopsis

A variable is assigned a non-trivial value that is never used.

Enabled by default

Yes

Severity/Certainty

Low/Medium

Full description

A variable is assigned a non-trivial value that is never used. This is not unsafe as such, but might indicate a logical error.

Coding standards

Code examples

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

int example(void) {
  int x;
  x = 20;  
  x = 3;
  return 0;
}

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

int example(void) {
  int x;
  x = 20; 
  return x;
}