//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// <chrono>
// duration
// duration& operator++();
#include<chrono>#include<cassert>intmain(){std::chrono::hoursh(3);std::chrono::hours&href=++h;assert(&href==&h);assert(h.count()==4);}