logilab-astng #13944 false positive for class/instance attributes [validation pending]

class Klass:
    aa = 0
    bb = 0
    cc = 0

    def incr(self, val):
        if val > self.aa:
            val = self.aa
        if val < self.bb:
            val = self.bb
        self.aa += val
        self.cc += val

issues:

E: 14:Klass.incr: Instance of 'Klass' has no 'aa' member
E: 15:Klass.incr: Instance of 'Klass' has no 'aa' member
E: 18:Klass.incr: Instance of 'Klass' has no 'aa' member
E: 20:Klass.incr: Instance of 'Klass' has no 'cc' member
priorityimportant
typebug
done in0.19.2
load0.200
load left0.000
closed by<not specified>