[Vala] array memory leak?

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Consider the following (dummy) functions which shows memory leaks here
(valac 0.20.1 on ubuntu saucy 64Bit). It seems the problem exists with
Gee.ArrayList too. May someone confirm this?

//memory leak if len<120 (nfill ist NOT the problem)
//NO memory leak if len>=120
void Dummy1(int len)
{
        const int LOOPS=1000000;
        string[] dummy = new string[LOOPS];
        for(var xx=0; xx<LOOPS; xx++)
                dummy[xx]=string.nfill(len, 'x');
}

//memory leak if len<24 (nfill ist NOT the problem)
//NO memory leak if len >=24
void Dummy2(int len)
{
        const int LOOPS=1000000;
        string[] dummy={};
        for(var xx=0; xx<LOOPS; xx++)
                dummy+=string.nfill(len, 'x');
}

class CDummy : GLib.Object
{
        private int member;
        public CDummy(int param) { member=param; }
}
void Dummy3() //memory leak
{
        const int LOOPS=1000000;
        CDummy[] dummy = new CDummy[LOOPS];
        for(var xx=0; xx<LOOPS; xx++)
                dummy[xx] = new CDummy(xx);
}




-- 
Bernhard