Missing warning opportunity - code after break;

[Soul Studios]

Just noticed this:
while(something)
{
        // stuff
        if (num_elements == 0)
        {
                break;
                --current_group;
        }
}

doesn't trigger a warning in GCC 5.1, 6.3 and 7.1. The line after 
"break;" is unused, probably should be before the break, ie. user error.

Matt Bentley