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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// <chrono>
// time_point
// time_point& operator-=(const duration& d);
#include <chrono>
#include <cassert>
int main()
{
typedef std::chrono::system_clock Clock;
typedef std::chrono::milliseconds Duration;
std::chrono::time_point<Clock, Duration> t(Duration(3));
t -= Duration(2);
assert(t.time_since_epoch() == Duration(1));
}
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