1 // Copyright 2018 The Chromium Authors
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "base/strings/utf_string_conversions.h"
6
7 #include <string_view>
8 #include <tuple>
9
10 #include "base/strings/string_util.h"
11
12 std::string output_std_string;
13 std::wstring output_std_wstring;
14 std::u16string output_string16;
15
16 // Entry point for LibFuzzer.
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)17 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
18 std::string_view string_piece_input(reinterpret_cast<const char*>(data),
19 size);
20
21 std::ignore = base::UTF8ToWide(string_piece_input);
22 base::UTF8ToWide(reinterpret_cast<const char*>(data), size,
23 &output_std_wstring);
24 std::ignore = base::UTF8ToUTF16(string_piece_input);
25 base::UTF8ToUTF16(reinterpret_cast<const char*>(data), size,
26 &output_string16);
27
28 // Test for char16_t.
29 if (size % 2 == 0) {
30 std::u16string_view string_piece_input16(
31 reinterpret_cast<const char16_t*>(data), size / 2);
32 std::ignore = base::UTF16ToWide(output_string16);
33 base::UTF16ToWide(reinterpret_cast<const char16_t*>(data), size / 2,
34 &output_std_wstring);
35 std::ignore = base::UTF16ToUTF8(string_piece_input16);
36 base::UTF16ToUTF8(reinterpret_cast<const char16_t*>(data), size / 2,
37 &output_std_string);
38 }
39
40 // Test for wchar_t.
41 size_t wchar_t_size = sizeof(wchar_t);
42 if (size % wchar_t_size == 0) {
43 std::ignore = base::WideToUTF8(output_std_wstring);
44 base::WideToUTF8(reinterpret_cast<const wchar_t*>(data),
45 size / wchar_t_size, &output_std_string);
46 std::ignore = base::WideToUTF16(output_std_wstring);
47 base::WideToUTF16(reinterpret_cast<const wchar_t*>(data),
48 size / wchar_t_size, &output_string16);
49 }
50
51 // Test for ASCII. This condition is needed to avoid hitting instant CHECK
52 // failures.
53 if (base::IsStringASCII(string_piece_input)) {
54 output_string16 = base::ASCIIToUTF16(string_piece_input);
55 std::u16string_view string_piece_input16(output_string16);
56 std::ignore = base::UTF16ToASCII(string_piece_input16);
57 }
58
59 return 0;
60 }
61