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: c++03, c++11
10
11#include <algorithm>
12#include <cstddef>
13#include <cstdint>
14#include <vector>
15
16#include "fuzz.h"
17
18extern "C" int LLVMFuzzerTestOneInput(const std::uint8_t *data, std::size_t size) {
19 std::vector<ByteWithPayload> input;
20 for (std::size_t i = 0; i < size; ++i)
21 input.push_back(x: ByteWithPayload(data[i], i));
22
23 std::vector<ByteWithPayload> working = input;
24 std::stable_sort(first: working.begin(), last: working.end(), comp: ByteWithPayload::key_less());
25
26 if (!std::is_sorted(first: working.begin(), last: working.end(), comp: ByteWithPayload::key_less()))
27 return 1;
28
29 auto iter = working.begin();
30 while (iter != working.end()) {
31 auto range = std::equal_range(first: iter, last: working.end(), val: *iter, comp: ByteWithPayload::key_less());
32 if (!std::is_sorted(first: range.first, last: range.second, comp: ByteWithPayload::total_less()))
33 return 2;
34 iter = range.second;
35 }
36 if (!fast_is_permutation(first1: input.cbegin(), last1: input.cend(), first2: working.cbegin()))
37 return 99;
38 return 0;
39}
40

source code of libcxx/test/libcxx/fuzzing/stable_sort.pass.cpp