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 19int 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