PVS-Studio warning V557 for OpenMS

static const Int CHANNELS_FOURPLEX[4][1];
static const Int CHANNELS_EIGHTPLEX[8][1];

ExitCodes main_(int, const char **)
{
  ....
  if (itraq_type == ItraqQuantifier::FOURPLEX)
  {
    for (Size i = 0; i < 4; ++i)
    {
      std::vector<std::pair<String, DoubleReal> > one_label;
      one_label.push_back(std::make_pair<String, DoubleReal>(
        String("Channel ") +
          String(ItraqConstants::CHANNELS_FOURPLEX[i][0]),
        DoubleReal(ItraqConstants::CHANNELS_FOURPLEX[i][0])));
      labels.push_back(one_label);
    }
  }
  else //ItraqQuantifier::EIGHTPLEX
  {
    for (Size i = 0; i < 8; ++i)
    {
      std::vector<std::pair<String, DoubleReal> > one_label;
      one_label.push_back(std::make_pair<String, DoubleReal>(
        String("Channel ") +
          String(ItraqConstants::CHANNELS_FOURPLEX[i][0]),
        DoubleReal(ItraqConstants::CHANNELS_FOURPLEX[i][0])));
      labels.push_back(one_label);
    }
  }
  ....
}

This suspicious code was found in OpenMS project by PVS-Studio static code analyzer.
Warning message is:
V557 Array overrun is possible. The value of 'i' index could reach 7. itraqanalyzer.c 232

PVS-Studio is a static analyzer for detecting bugs in the source code of applications written in C, C++, C++11, C++/CX. Site: http://www.viva64.com/en/pvs-studio/