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// UNSUPPORTED: c++98, c++03, c++11, c++14
11
12// <algorithm>
13
14// template <class PopulationIterator, class SampleIterator, class Distance,
15//           class UniformRandomNumberGenerator>
16// SampleIterator sample(PopulationIterator first, PopulationIterator last,
17//                       SampleIterator out, Distance n,
18//                       UniformRandomNumberGenerator &&g);
19
20#include <algorithm>
21#include <random>
22#include <cassert>
23
24#include "test_iterators.h"
25
26template <class PopulationIterator, class SampleIterator> void test() {
27  int ia[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
28  const unsigned is = sizeof(ia) / sizeof(ia[0]);
29  const unsigned os = 4;
30  int oa[os];
31  std::minstd_rand g;
32  std::sample(PopulationIterator(ia), PopulationIterator(ia + is),
33                            SampleIterator(oa), os, g);
34}
35
36int main() {
37  // expected-error@algorithm:* {{static_assert failed "SampleIterator must meet the requirements of RandomAccessIterator"}}
38  // expected-error@algorithm:* 2 {{does not provide a subscript operator}}
39  // expected-error@algorithm:* {{invalid operands}}
40  test<input_iterator<int *>, output_iterator<int *> >();
41}
42