Fix #10556 FP containerOutOfBounds with QList [inconclusive] (#3688)

cfg/qt.cfg

@@ -762,7 +762,7 @@
   <function name="QList::append,QStringList::append">
     <noreturn>false</noreturn>
     <returnValue type="void"/>
-    <arg nr="1">
+    <arg nr="1" direction="in">
       <not-uninit/>
     </arg>
   </function>

test/cfg/qt.cpp

@@ -127,6 +127,17 @@ void QList1(QList<int> intListArg)
     (void)qstringList4[0];
 }
 
+QList<int> QList2() { // #10556
+    QList<int> v;
+    
+    for (int i = 0; i < 4; ++i)
+    {
+        v.append(i);
+        (void)v.at(i);
+    }
+    return v;
+}
+
 QList<int>::iterator QList3()
 {
     QList<int> qlist1;