1 | //===----------------------------------------------------------------------===// |
2 | // |
3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
4 | // See https://llvm.org/LICENSE.txt for license information. |
5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
6 | // |
7 | //===----------------------------------------------------------------------===// |
8 | |
9 | // UNSUPPORTED: no-random-device |
10 | |
11 | // <random> |
12 | |
13 | // class random_device; |
14 | |
15 | // result_type operator()(); |
16 | |
17 | #include <random> |
18 | #include <cassert> |
19 | #include <string> |
20 | #include <system_error> |
21 | |
22 | #include "test_macros.h" |
23 | |
24 | int main(int, char**) |
25 | { |
26 | { |
27 | std::random_device r; |
28 | std::random_device::result_type e = r(); |
29 | ((void)e); // Prevent unused warning |
30 | } |
31 | |
32 | // When using the `/dev/urandom` implementation, make sure that we throw |
33 | // an exception when we hit EOF while reading the custom-provided file. |
34 | #if !defined(TEST_HAS_NO_EXCEPTIONS) && defined(_LIBCPP_USING_DEV_RANDOM) |
35 | { |
36 | std::random_device r("/dev/null" ); |
37 | try { |
38 | (void)r(); |
39 | LIBCPP_ASSERT(false); |
40 | } catch (const std::system_error&) { |
41 | } |
42 | } |
43 | #endif |
44 | |
45 | return 0; |
46 | } |
47 | |