test/DynamicList fails when compiled in FULLDEBUG mode

--> FOAM FATAL ERROR: 
index 4 out of range [0,4)

    From function void Foam::UList<T>::checkIndex(Foam::label) const [with T = int; Foam::label = int]
    in file develop/OpenFOAM-plus/src/OpenFOAM/lnInclude/UListI.H at line 163.

originates from

#5  ? at Test-DynamicList.C:107