1 //===----------------------------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 // <chrono> 11 12 // duration 13 14 // Period::num shall be positive, diagnostic required. 15 16 #include <chrono> 17 18 int main() 19 { 20 typedef std::chrono::duration<int, std::ratio<5, -1> > D; 21 D d; 22 } 23