superfluous-semicolon (S081)

Fix is always available.

This rule is turned on by default.

What does it do?

Catches a semicolon at the end of a line of code.

Why is this bad?

Many languages use semicolons to denote the end of a statement, but in Fortran each line of code is considered its own statement (unless it ends with a line continuation character, '&'). Semicolons may be used to separate multiple statements written on the same line, but a semicolon at the end of a line has no effect.

A semicolon at the beginning of a statement similarly has no effect, nor do multiple semicolons in sequence.