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//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: no-random-device
// <random>
// class random_device;
// result_type operator()();
#include <random>
#include <cassert>
#include <string>
#include <system_error>
#include "test_macros.h"
int main(int, char**)
{
{
std::random_device r;
std::random_device::result_type e = r();
((void)e); // Prevent unused warning
}
// When using the `/dev/urandom` implementation, make sure that we throw
// an exception when we hit EOF while reading the custom-provided file.
#if !defined(TEST_HAS_NO_EXCEPTIONS) && defined(_LIBCPP_USING_DEV_RANDOM)
{
std::random_device r("/dev/null");
try {
(void)r();
LIBCPP_ASSERT(false);
} catch (const std::system_error&) {
}
}
#endif
return 0;
}
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