[Bug libstdc++/58931] condition_variable::wait_until overflowed by large time_point

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58931

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2013-11-11
          Component|c++                         |libstdc++
     Ever confirmed|0                           |1

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Fixing PR 54562 doesn't help. This can be reduced to

#include <chrono>
#include <cassert>

int main()
{
  using StClock = std::chrono::steady_clock;
  using SysClock = std::chrono::system_clock;
  auto st_atime = std::chrono::time_point<StClock>::max();
  const StClock::time_point st_now = StClock::now();
  const SysClock::time_point sys_now = SysClock::now();
  const auto delta = st_atime - st_now;
  const auto sys_atime = sys_now + delta;
  assert( sys_atime > sys_now );
}