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From: martin troxler (martin.troxler_at_[hidden])
Date: 2005-05-12 03:37:25

It is possible, that the following line
       boost::posix_time::ptime now = boost::posix_time::microsec_clock::local_time();
which invokes
  template<class time_type>
  class microsec_clock
      static time_type local_time() {
          timeval tv;
          gettimeofday(&tv, 0); //gettimeofday does not support TZ adjust on Linux.
          return create_time(&tv);
      static time_type create_time(timeval* tv) {
          time_t t = tv->tv_sec;
          boost::uint32_t fs = tv->tv_usec;
         tm* curr = localtime(&t);
returns a time with 1s off its correct value.
The reason for this bug is the line with
that overwrites the second value just a few µs after the call to gettimofday.
This new second value is used together with the fs value from gettimeofday.
tv from gettimofday: 12345s/999998 µs
t from std::time: 12346s
resulting time: 12346s/999998 µs !!!!
Question: Why this call to std::time? I commented it out and it worked.

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