Synopsis

(Advisory) The built-in unary + operator should not be used

Enabled by default

No

Severity/Certainty

Low/Medium

Full description

Unary + promotes to int or cause a lambda to decay to function pointer. Use static_cast instead.

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:

int example(unsigned short n) {
  return +n; // Non-compliant - triggers promotion to int
}

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

int example(unsigned short n) {
  return static_cast<int>(n); // Compliant
}