|  | //===----------------------------------------------------------------------===// | 
|  | // | 
|  | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. | 
|  | // See https://llvm.org/LICENSE.txt for license information. | 
|  | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception | 
|  | // | 
|  | //===----------------------------------------------------------------------===// | 
|  |  | 
|  | // <chrono> | 
|  |  | 
|  | // duration | 
|  |  | 
|  | // Period::num shall be positive, diagnostic required. | 
|  |  | 
|  | #include <chrono> | 
|  |  | 
|  | int main(int, char**) | 
|  | { | 
|  | typedef std::chrono::duration<int, std::ratio<5, -1> > D; | 
|  | D d; | 
|  |  | 
|  | return 0; | 
|  | } |