message: Use a temporary string to avoid compiler error
diff: @@ -317,9 +317,10 @@ int main(int argc, char *argv[])
  {
  // Write out the grid function, since GLvis cannot yet
  // visualize vector grid functions over the socket.
  - ostringstream temp;
  - temp << "vortex-" << ti << ".gf";
  - ofstream osol(temp.str());
  + ostringstream ss;
  + ss << "vortex-" << ti << ".gf";
  + string temp(ss.str());
  + ofstream osol(temp.c_str());
  osol.precision(precision);
  u.Save(osol);
  }
  