43 lines · cpp
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-exception6//7//===----------------------------------------------------------------------===//8 9// UNSUPPORTED: c++03, c++11, c++1410 11// <algorithm>12 13// template <class PopulationIterator, class SampleIterator, class Distance,14// class UniformRandomNumberGenerator>15// SampleIterator sample(PopulationIterator first, PopulationIterator last,16// SampleIterator out, Distance n,17// UniformRandomNumberGenerator &&g);18 19#include <algorithm>20#include <random>21#include <cassert>22 23#include "test_iterators.h"24 25template <class PopulationIterator, class SampleIterator> void test() {26 int ia[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};27 const unsigned is = sizeof(ia) / sizeof(ia[0]);28 const unsigned os = 4;29 int oa[os];30 std::minstd_rand g;31 std::sample(PopulationIterator(ia), PopulationIterator(ia + is),32 SampleIterator(oa), os, g);33}34 35int main(int, char**) {36 // expected-error-re@*:* {{static assertion failed{{( due to requirement '.*')?}}{{.*}}SampleIterator must meet the requirements of RandomAccessIterator}}37 // expected-error@*:* 2 {{does not provide a subscript operator}}38 // expected-error@*:* {{invalid operands}}39 test<cpp17_input_iterator<int *>, cpp17_output_iterator<int *> >();40 41 return 0;42}43