Conditional expressions which are always true or false can lead to unreachable code.
Noncompliant code example
a = false;
if (a) { // Noncompliant
doSomething(); // never executed
}
if (!a || b) { // Noncompliant; "!a" is always "true", "b" is never evaluated
doSomething();
} else {
doSomethingElse(); // never executed
}
