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 // result_type operator()(); 15 16 #include <random> 17 #include <cassert> 18 19 int main() 20 { 21 { 22 std::random_device r; 23 std::random_device::result_type e = r(); 24 } 25 26 try 27 { 28 std::random_device r("/dev/null"); 29 r(); 30 assert(false); 31 } 32 catch (const std::system_error& e) 33 { 34 } 35 } 36