QtConcurrent headers leads to warnings W4

In qtconcurrentmapkernel.h class MappedEachKernel derives from IterateKernel.
IterateKernel has two public class members:
const Iterator begin;
const Iterator end;

The derived class MappedEachKernel has a method runIterations with the
following method signature:

bool runIterations(Iterator sequenceBeginIterator, int begin, int end, T
*results) override

So the names 'begin' and 'end' are used on class level which leads to warning W4