Coverage Report

Created: 2025-07-11 07:01

/src/phashmap_fuzz.cc
Line
Count
Source (jump to first uncovered line)
1
/* Copyright 2021 Google LLC
2
Licensed under the Apache License, Version 2.0 (the "License");
3
you may not use this file except in compliance with the License.
4
You may obtain a copy of the License at
5
      http://www.apache.org/licenses/LICENSE-2.0
6
Unless required by applicable law or agreed to in writing, software
7
distributed under the License is distributed on an "AS IS" BASIS,
8
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
9
See the License for the specific language governing permissions and
10
limitations under the License.
11
*/
12
#include <iostream>
13
#include <bitset>
14
#include <cinttypes>
15
#include <unistd.h>
16
#include "parallel_hashmap/phmap_dump.h"
17
#include <fuzzer/FuzzedDataProvider.h>
18
19
using phmap::flat_hash_map;
20
using namespace std;
21
22
483
void serialise_test(const uint8_t *data, size_t size) {
23
483
    phmap::flat_hash_map<unsigned int, int> table;
24
483
    FuzzedDataProvider fuzzed_data(data, size);
25
483
    const int num_items = fuzzed_data.ConsumeIntegral<int16_t>();
26
27
8.52M
    for (int i=0; i < num_items; ++i)  {
28
8.52M
        table.insert(typename phmap::flat_hash_map<unsigned int, int>::value_type(
29
8.52M
                    fuzzed_data.ConsumeIntegral<uint32_t>(), 
30
8.52M
                    fuzzed_data.ConsumeIntegral<int32_t>()));
31
8.52M
    }
32
33
483
    phmap::BinaryOutputArchive ar_out("/dump.data");
34
483
    table.phmap_dump(ar_out);
35
36
    //MapType table_in;
37
483
    phmap::flat_hash_map<unsigned int, int> table_in;
38
483
    phmap::BinaryInputArchive ar_in("/dump.data");
39
483
    table_in.phmap_load(ar_in);
40
41
483
    if(table == table_in) {
42
38
        unlink("/dump.data");
43
38
        return;
44
38
    }
45
445
    unlink("/dump.data");
46
445
}
47
48
void
49
483
test_assignments(const uint8_t *data, size_t size) {
50
483
    phmap::flat_hash_map<std::string, std::string> email;
51
483
    FuzzedDataProvider fuzzed_data(data, size);
52
483
    const int num_items = fuzzed_data.ConsumeIntegral<int16_t>();
53
8.52M
    for (int i=0; i < num_items; ++i) {
54
8.52M
            phmap::flat_hash_map<std::string, std::string>::value_type(
55
8.52M
                    fuzzed_data.ConsumeRandomLengthString(), 
56
8.52M
                    fuzzed_data.ConsumeRandomLengthString());
57
8.52M
    }
58
    // Iterate through all of the items.
59
483
    for (const auto& n: email) {}
60
483
}
61
62
483
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
63
483
    serialise_test(data, size);
64
483
    test_assignments(data, size);
65
483
    return 0;
66
483
}