No source available for FOO
<p>I encountered a new error/bug I have not seen before. What does this refer to or where should I take a look? Or what is the reason for such an error?</p>

<p><code>No source available for "libstdc++-6!_ZNSsC1ERKSs() at 0x6fc89524"</code></p>

<p>I suspect it popped up after this dummy data function:</p>

<pre><code>template &lt;class T&gt;
void DummyDataStudents(Array &lt;T&gt; A){
    for(int i=0; i&lt;A.lenght; i++){
        A.M[i].setStudent(i, i%2,"student"+i);
    }
    cout&lt;&lt;"Done Stundents"&lt;&lt;endl;
}
</code></pre>
