a470a13a70
Summary: In r342843, I added deprecation warnings to some facilities that were deprectated in C++14 and C++17. However, those deprecation warnings were not enabled by default. After discussing this on IRC, we had finally gotten consensus to enable those warnings by default, and I'm getting around to doing that only now. Reviewers: mclow.lists, EricWF Subscribers: christof, jkorous, dexonsmith, jdoerfert, libcxx-commits Differential Revision: https://reviews.llvm.org/D58140 llvm-svn: 355961
64 lines
1.8 KiB
C++
64 lines
1.8 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// <algorithm>
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// REQUIRES: c++98 || c++03 || c++11 || c++14
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// template<RandomAccessIterator Iter>
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// requires ShuffleIterator<Iter>
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// void
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// random_shuffle(Iter first, Iter last);
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#define _LIBCPP_DISABLE_DEPRECATION_WARNINGS
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#include <algorithm>
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#include <cassert>
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#include "test_macros.h"
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#include "test_iterators.h"
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template <class Iter>
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void
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test_with_iterator()
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{
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int empty[] = {};
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std::random_shuffle(Iter(empty), Iter(empty));
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const int all_elements[] = {1, 2, 3, 4};
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int shuffled[] = {1, 2, 3, 4};
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const unsigned size = sizeof(all_elements)/sizeof(all_elements[0]);
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std::random_shuffle(Iter(shuffled), Iter(shuffled+size));
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assert(std::is_permutation(shuffled, shuffled+size, all_elements));
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std::random_shuffle(Iter(shuffled), Iter(shuffled+size));
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assert(std::is_permutation(shuffled, shuffled+size, all_elements));
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}
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int main(int, char**)
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{
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int ia[] = {1, 2, 3, 4};
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int ia1[] = {1, 4, 3, 2};
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int ia2[] = {4, 1, 2, 3};
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const unsigned sa = sizeof(ia)/sizeof(ia[0]);
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std::random_shuffle(ia, ia+sa);
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LIBCPP_ASSERT(std::equal(ia, ia+sa, ia1));
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assert(std::is_permutation(ia, ia+sa, ia1));
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std::random_shuffle(ia, ia+sa);
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LIBCPP_ASSERT(std::equal(ia, ia+sa, ia2));
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assert(std::is_permutation(ia, ia+sa, ia2));
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test_with_iterator<random_access_iterator<int*> >();
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test_with_iterator<int*>();
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return 0;
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}
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