/gpfs/DDNgpfs1/bekas/YVES/local/bgclang/r209570-20140527/libc++/include/algorithm:2073:5: error: no matching function for call to '__fill'
    _VSTD::__fill(__first, __last, __value_, typename iterator_traits<_ForwardIterator>::iterator_category());
    ^~~~~~~~~~~~~
/gpfs/DDNgpfs1/bekas/YVES/local/bgclang/r209570-20140527/libc++/include/__config:348:15: note: expanded from macro '_VSTD'
#define _VSTD std::_LIBCPP_NAMESPACE
              ^
/gpfs/DDNgpfs1/bekas/YVES/work/OPT/opal/src/Algorithms/ParallelTTracker.cpp:2098:10: note: in instantiation of function template specialization 'std::__1::fill<ParticleAttribIterator<double>, double>' requested
      here
    std::fill(itsBunch->dt.begin(), itsBunch->dt.end(), itsBunch->getdT());
         ^
/gpfs/DDNgpfs1/bekas/YVES/local/bgclang/r209570-20140527/libc++/include/algorithm:2054:1: note: candidate function [with _ForwardIterator = ParticleAttribIterator<double>, _Tp = double] not viable: no known
      conversion from 'typename iterator_traits<ParticleAttribIterator<double> >::iterator_category' (aka 'std::__1::input_iterator_tag') to 'std::__1::forward_iterator_tag' for 4th argument
__fill(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value_, forward_iterator_tag)
^
/gpfs/DDNgpfs1/bekas/YVES/local/bgclang/r209570-20140527/libc++/include/algorithm:2063:1: note: candidate function [with _RandomAccessIterator = ParticleAttribIterator<double>, _Tp = double] not viable: no known
      conversion from 'typename iterator_traits<ParticleAttribIterator<double> >::iterator_category' (aka 'std::__1::input_iterator_tag') to 'std::__1::random_access_iterator_tag' for 4th argument
__fill(_RandomAccessIterator __first, _RandomAccessIterator __last, const _Tp& __value_, random_access_iterator_tag)
^