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 // <random>
11 
12 // class random_device;
13 
14 // explicit random_device(const string& token = "/dev/urandom");
15 
16 #include <random>
17 #include <cassert>
18 
19 int main()
20 {
21     try
22     {
23         std::random_device r("wrong file");
24         assert(false);
25     }
26     catch (const std::system_error& e)
27     {
28     }
29     {
30         std::random_device r;
31     }
32     {
33         std::random_device r("/dev/urandom");;
34     }
35     {
36         std::random_device r("/dev/random");;
37     }
38 }
39